ALLIANCE RESOURCES PLC
10-K405, 1999-08-13
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>

                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549

                                   FORM 10-K

[X]             ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d)
                    OF THE SECURITIES EXCHANGE ACT OF 1934
                   FOR THE FISCAL YEAR ENDED APRIL 30, 1999
                                      OR
[ ]            TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                    OF THE SECURITIES EXCHANGE ACT OF 1934
                 FOR THE TRANSITION PERIOD FROM _____TO______

                        COMMISSION FILE NUMBER 333-19013

                            ALLIANCE RESOURCES PLC
            (Exact name of registrant as specified in its charter)


            ENGLAND AND WALES                                73-1405081
     (State or other jurisdiction of                      (I.R.S. Employer
      incorporation or organization)                     Identification No.)


         4200 EAST SKELLY DRIVE
               SUITE 1000
            TULSA, OKLAHOMA                                    74135
(Address of principal executive offices)                     (Zip code)

      Registrant's telephone number, including area code: (918) 491-1100


          SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

    Title of Each Class             Name of Each Exchange on Which Registered
    -------------------             -----------------------------------------
          (NONE)                                     (NONE)

          SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:

                            Ordinary Shares 1p each
                               (Title of Class)

     Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
Registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes   X    No
                                               ---       ---

     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of the Regulation S-K is not contained herein, and will not be contained, to
the best of the Registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K.   [ X ]

     The aggregate market value of the Registrant's voting stock held by non-
affiliates as of August 9, 1999 was approximately $3,858,330.

     On August 9, 1999, there were 47,487,142 shares of the Registrant's
ordinary shares outstanding and 10,000,000 shares outstanding of the
Registrant's convertible restricted voting stock.

                    Documents Incorporated by the Reference
                                     NONE
<PAGE>

                            ALLIANCE RESOURCES PLC

                                   FORM 10-K
                       FISCAL YEAR ENDED APRIL 30, 1999
                       --------------------------------
                               TABLE OF CONTENTS

                                    PART I
<TABLE>
<S>      <C>                                                                                                     <C>
Item 1.    Business...........................................................................................     1
Item 2.    Properties.........................................................................................     3
Item 3.    Legal Proceedings..................................................................................     9
Item 4.    Submission of Matters to a Vote of Security Holders................................................    10

PART II

Item 5.    Market for Registrant's Common Equity and Related Stockholder Matters..............................    11
Item 6.    Selected Financial Data............................................................................    12
Item 7.    Management's Discussion and Analysis of Financial Condition and
           Results of Operations..............................................................................    14
Item 8.    Financial Statements and Supplementary Data........................................................    23
Item 9.    Changes in and Disagreements with Accountants on Accounting and
           Financial Disclosure...............................................................................    23

PART III

Item 10.   Directors and Executive Officers of the Registrant.................................................    23
Item 11.   Executive Compensation.............................................................................    24
Item 12.   Security Ownership of Certain Beneficial Owners and Management.....................................    27
Item 13.   Certain Relationship and Related Transactions......................................................    29

PART IV

Item 14.   Exhibits, Financial Statement Schedules, and Reports on Form 8-K...................................    29

Signatures....................................................................................................    31
</TABLE>

Cautionary Statement Regarding Forward Looking Statements

In the interest of providing the Company's stockholders and potential investors
with certain information regarding the Company's future plans and operations,
certain statements set forth in this Form 10-K relate to management's future
plans and objectives.  Such statements are "forward-looking statements" within
the meaning of Section 27A of the Securities Act of 1933, as amended, and
Section 21E of the Securities Exchange Act of 1934, as amended.  Although any
forward-looking statements contained in this Form 10-K or otherwise expressed by
or on behalf of the Company are, to the knowledge and in the judgement of the
officers and directors of the Company, expected to prove true and to come to
pass, management is not able to predict the future with absolute certainty.
Forward-looking statements involve known and unknown risks and uncertainties
which may cause the Company's actual performance and financial results in future
periods to differ materially from any projection, estimate or forecasted result.
These risks and uncertainties include, among other things, volatility of oil and
gas prices, competition, risks inherent in the Company's oil and gas operations,
the inexact nature of interpretation of seismic and other geological and
geophysical data, imprecision of reserve estimates, the Company's ability to
replace and expand oil and gas reserves, and such other risks and uncertainties
described from time to time in the Company's periodic reports and filing with
the Securities and Exchange Commission.  Accordingly, stockholders and potential
investors are cautioned that certain events or circumstances could cause actual
results to differ materially from those projected, estimated, or predicted.

                                                                               i
<PAGE>

                                    PART I

ITEM 1.  BUSINESS

     Alliance Resources PLC (the "Company" or "Alliance") is organized as a
public limited company under the laws of England and Wales.  Alliance is a
London-based holding company of a group ("the Group") whose principal activities
are the acquisition, exploration, development and production of oil and gas
properties.

     All financial data (and, consequently, all oil and gas reserve
information, descriptions of properties and business and all information
associated with financial or reserve information ) prior to the Company's merger
with LaTex Resources, Inc. ("LaTex") on May 1, 1997, described below, has been
restated to reflect LaTex as the predecessor company to the Company.  For
financial, reserve and associated information concerning Alliance prior to its
May 1, 1997 merger with LaTex, reference should be made to the Company's
Registration Statement on Form F-4 (which was filed in its final form with the
Securities Exchange Commission on April 9, 1997 and which contains information
regarding Alliance through January 31, 1997) and to the Company's filing on Form
20-F (which was filed in its final form with the Securities and Exchange
Commission on June 18, 1998).

     Because for corporate law purposes (but not financial accounting
purposes) Alliance is the surviving corporation of the May 1, 1997 merger, all
references to the "Company" both prior and subsequent to May 1, 1997 refer to
Alliance Resources PLC and its subsidiaries unless otherwise indicated.  Unless
the context requires otherwise, all references to "LaTex" include LaTex
Resources, Inc., and its consolidated subsidiaries.

     Alliance was incorporated and registered under the laws of England and
Wales on August 20, 1990.  Alliance's corporate headquarters are at 4200 East
Skelly Drive, Suite 1000, Tulsa, Oklahoma  74135.

RECENT DEVELOPMENTS

     On October 30, 1998, Alliance completed its acquisition (the
"Acquisition") of Difco Limited ("Difco").  Alliance acquired all of the capital
stock of Difco and, indirectly a contract to acquire 10% of Burlington Resources
(Irish Sea) Limited's ("Burlington") interest in the East Irish Sea Properties
("U.K. Interests").  The Difco shareholders received approximately 8.7% of the
outstanding shares of the Company and could receive up to 29.6% of the
outstanding shares of the Company based upon the production from, or reserves
attributable to, the U.K. Interests.

     The Company acquired, through Difco, 10% of Burlington's interest in
the East Irish Sea Properties for cash consideration of approximately
$17,800,000.  In addition, the Company issued to one of its lenders 15,000,000
ordinary shares and loan notes with a face value of $9,750,000 for a total
consideration of $10,000,000 and 545,454 ordinary shares in payment of a fee of
$292,000.  The Company paid another lender a cash fee of $700,000 and granted
the lender warrants to purchase 3,275,000 ordinary shares at a price of 1p per
share and an overriding royalty interest in the U.K. Interests of 0.3% beginning
January 1, 2001.  The overriding royalty interest will entitle the lender to
receive a payment equal to the specified percentage of the net revenues
generated by the U.K. Interests. The overriding royalty interest would have the
effect of reducing the Company's revenues from the U.K. Interests. The Company
also issued to its financial advisors 615,385 ordinary shares in payment of a
fee of $330,000.

     On April 23, 1999, the Company announced the successful drilling and
testing of the 110/2b - R1 well.  The well was the first to be drilled on the
Company's recently acquired East Irish Sea assets and is located in the Dalton
Field. The well was spudded on February 26, 1999, drilled to 4,222 feet, and
suspended on April 12, 1999.  Log analysis estimates 605 feet of gross gas
column to be present in the well.  Production testing from gross perforations
between 3,395 - 3,700 feet achieved flow rates up to 78 MMCFG/D at 730 psig
flowing tubing pressure.

     Also, on April 23, 1999 the Company announced that it had recommended its
recompletion program on its U.S. properties, yielding early success.  Notably,
the Ernest Roberts No. 1 Gas Unit in Hinds County, Mississippi was recompleted
in March 1999.  The well is currently producing at a rate of 1,626 MCFG/D with
35 BOPD.  In addition, the Millie 2-20 well located in Dewey County, Oklahoma,
was recompleted in February, 1999 and is currently producing 560 MCFG/D and 2
BOPD.

                                                                               1
<PAGE>

     On July 23, 1999 the Company announced that the Dalton R2 well has been
successfully reentered and recompleted.  The R2 well tested at a maximum flow
rate of approximately 54 MMSCF/D on a 120/64 inch choke at 772 psig flowing
tubing pressure.  In the East Millom Field, the Millom Q1 well has been
successfully reentered and recompleted.  The Q1 well tested at a maximum flow
rate of 18 MMSCF/D on a 68/64 inch choke at 725 psig flowing tubing pressure.
The Dalton R1, R2 and Millom Q1 wells are in the process of being tied back to
the North Morecambe Bay Platform.  First production is anticipated in August,
1999.

     Effective July 30, 1999, the Company and its principal lender agreed to
amend the terms of its credit agreement to allow for additional immediate
borrowings of $5,000,000, to defer the date of the borrowing base
redetermination from July 31, 1999 to December 31, 1999, and to defer the
repayment date of a portion of the indebtedness from January 31, 2001 to July
31, 2001.

     American Rivers Oil Company ("AROC") and Alliance announced that on July
22, 1999, they entered into a preliminary agreement, under which subject to the
satisfaction of certain of various pre-conditions a new subsidiary of AROC would
make a share for share offer for Alliance.  The principal conditions to the
making of the offer are the filing of a registration statement with the
Securities and Exchange Commission and due diligence conducted by both parties.
If the share offer is completed, it is expected that the shares of the new
company will be quoted on the U.S. OTC Bulletin Board and will not be listed on
the London Stock Exchange.  If the transaction is completed and all the Alliance
shareholders accept the offer, the shareholders of Alliance would hold 98% and
the shareholders of AROC would hold 2% of the enlarged group.

COMPETITION

     The oil and natural gas industry is highly competitive in all its
phases.  Alliance encounters strong competition from many other energy companies
in acquiring economically desirable producing properties and drilling prospects
and in obtaining equipment and labor to operate and maintain its properties.  In
addition, many energy companies possess greater resources than Alliance.

GOVERNMENTAL AND ENVIRONMENTAL REGULATION

     Oil and gas production is subject to regulation under many international
and U.S. Federal and State statutes, rules, orders and regulation. Permits for
drilling, reworking and recompletion operations, drilling bonds and reports
concerning operations are required. Most jurisdictions have regulations
governing conservation matters, establishing maximum rates of production and the
regulation of the spacing, plugging and abandonment of wells.

     Environmental laws and regulations may affect the Company's operations
and costs.  In particular, production and saltwater disposal operations and use
of facilities from treating, processing or otherwise handling hydrocarbons and
wastes therefrom are subject to stringent environmental regulations.
Environmental regulations are subject to frequent change and the Company cannot
predict ongoing costs of compliance or the future impact of such regulations on
operations.

OPERATIONS HAZARDS AND INSURANCE

     The operations of the Company are subject to all risks inherent in the
exploration for and production of oil and gas, including such natural hazards as
blowouts, cratering and fires, which could result in damage or injury to, or
destruction of, drilling rigs and equipment, formation, producing facilities or
other property, or could result in personal injury, loss of life or pollution of
the environment.  Any such event could result in substantial expense to the
Company which could have a material adverse effect upon the financial condition
of the Company to the extent it is not fully insured against such risks but, in
accordance with standard industry practice, the Company is not fully insured for
all risks, either because such insurance is unavailable or because the Company
elects not to obtain insurance coverage because of cost.  Although such
operational risks and hazards may to some extent be minimized, no combination of
experience, knowledge and scientific evaluation can eliminate the risk of
investment or assure a profit to any company engaged in oil and gas operations.

                                                                               2
<PAGE>

EMPLOYEES

     At April 30, 1999, Alliance had 15 management and administrative
employees and 9 technical and operating employees, none of whom belonged to a
union. The employees include 15 people located in its Tulsa, Oklahoma office, 8
people in the Tensaw, Alabama office who conduct lease operations in the
Company's South Carlton Field, and 1 field person in Louisiana.  The Company's
other field activities are accomplished through independent contractors.  The
Company believes its relations with its employees and contractors are excellent.

MARKETING

     Alliance's production is primarily from developed fields close to
major pipelines or refineries and established infrastructure.  As a result,
Alliance has not experienced any difficulty in finding a market for its product
as it becomes available or in transporting its product to those markets.

Oil Marketing

     Alliance markets its oil to a variety of purchasers, most of which are
large, established companies.  The oil is generally sold under short-term
contracts with the sales price based on an applicable posted price, plus a
negotiated premium.  This price is determined on a well-by-well basis and the
purchaser generally takes delivery at the wellhead.

Gas Marketing

     Virtually all of Alliance's gas production is close to existing pipelines
and, consequently, Alliance generally has a variety of options to market its
gas.  Alliance sells the majority of its gas on the spot market, with prices
fluctuating month-to-month based on published pipeline indices with slight
premiums or discounts to the applicable index.

ITEM 2.  PROPERTIES

PRODUCTION

     Alliance owns producing properties located in 10 states in the U.S.,
with proved reserves located primarily in the states of Alabama, Louisiana,
Mississippi, Oklahoma, and Texas.  Alliance continuously evaluates the
profitability of its oil, gas and related activities and has a policy of
divesting itself of unprofitable oil and gas properties or areas of operation
that are not consistent with its operating philosophy.

     Alliance operates 144 producing wells (119.6 net) in these areas and
also owns non-operated interests in a further 122 active producing wells and
units (21.9 net).  These properties produced at a gross average rate of 4,300.9
Bbls of oil per day and 59,749.8 Mcf of gas per day (802.6 BBls of oil per day
and 4,353.2 Mcf of gas per day net to the Company's interest) for the year ended
April 30, 1999.  Oil and gas sales from Alliance's producing oil and gas
properties accounted for substantially all of Alliance's revenues for the year
ended April 30, 1999.

     The following summarizes Alliance's principal areas of oil and gas
production activity as of April 30, 1999.

     South Carlton Field, Alabama.  The South Carlton Field is located in
Clarke and Baldwin Counties in southwest Alabama, approximately 50 miles north
of Mobile, Alabama.  The field is situated on the Alabama River, and all crude
oil produced is exported from the field by barge.  Alliance operates 56 active
producing oil wells and three saltwater disposal wells.  Production is from the
Massive and Pilot Sands of the Tuscaloosa Formation at a depth of approximately
6,000 ft.  The field produced at a gross average daily rate of 301.8 Bbls of oil
per day (249.6 Bbls of oil per day net to the Company's interest) for the
duration of the year ended April 30, 1999.  Production from the field was
allowed to fall during the course of 1998 in order to minimize the impact of low
oil prices on the overall profitability of operations and reached a gross
average daily low of 206 Bbls of oil per day in the month of December 1998.
Workover activities which were kept to a minimum in 1998 were stepped up in
early 1999, and many

                                                                               3
<PAGE>

temporarily shut-in wells were returned to production. The field is now
producing consistently at gross daily rates in excess of 400 Bbls of oil per day
and in July 1999 again reached gross production levels of over 500 Bbls of oil
per day.

     Additional infill drilling has been identified in the field, and the
Company believes that the application of horizontal drilling techniques has the
potential to significantly improve recovery per well in view of the heavy
gravity of the oil (12-14/0/ API).  Alliance's working interest in this field is
100%. Net proved reserves to Alliance as of April 30, 1999 were 5,864.6 MBbls of
oil.

     Bolton Field, Mississippi.  The Bolton Field is located in Hinds
County, Mississippi and approximately 18 miles west of Jackson, Mississippi.
Alliance operates 1 active producing well in this field, the Ernest Roberts #1
Gas Unit.  Production is from the Cotton Valley Sands at a depth of over 15,500
ft.  This property produced at a gross average daily rate of 527 Mcf of gas per
day and 14.2 Bbls of oil per day (372.1 Mcf of gas per day and 10.1 Bbls of oil
per day net to the Company's interest) for the duration of the year ended April
30, 1999.

     The well was recompleted in March 1999 in several Cotton Valley Sands
at depths of between 15,590 and 15,916 ft.  The well is currently producing at a
stabilized gross rate of approximately 1,620 Mcf of gas per day and 40 Bbls of
oil per day.  Alliance's working interest in this field is currently 91%.
Additional proved behind pipe potential has been identified in the well and net
proved reserves to Alliance as of April 30, 1999 were 3,619 MMcf of gas and
132.3 MBbls of oil.

     Black Warrior Basin, Mississippi and Alabama.  Alliance owns operated
and non-operated working interests in 51 wells (38 operated and 13 non-operated)
in Lamar, Fayette and Pickens Counties, Alabama and Lee and Chickasaw Counties,
Mississippi.  Production from these wells and units is from multiple sandstones
of Mississippian (Carter, Lewis and Millerella) and Pennsylvanian (Benton and
Coats) age at depths of 1,900 to 4,600 ft.  These properties produced at a gross
average daily rate of 4,046.8 Mcf of gas per day and 318.4 Bbls of oil per day
(1,450.5 Mcf of gas per day and 11.8 Bbls of oil per day net to the Company's
interest) for the duration of the year ended April 30, 1999.  Alliance's working
interest in these properties varies from between 1.8% to 100%.  Significant
proved behind pipe reserves have been identified in the properties and the
majority are scheduled for recompletion over the next few years with the
potential to add significantly to net cash flow.  Net proved reserves to
Alliance as of April 30, 1999 were 14.2 MBbls of oil and 9,698.4 MMcf of gas.

     War-Wink South/East Quito Fields, Texas.  Alliance owns non-operated
working interests in 41 active wells operated by Texaco and Chevron in the War-
Wink South and East Quito Fields in Ward County, Texas.  These fields currently
produce from multiple reservoirs in the Fusselman dolomite (Middle Silurian),
Atoka limestone (Middle Pennsylvanian), and the Wolfcamp and Cherry Canyon
(Lower and Middle Permian) Sands at depths of 6,200 feet to 17,500 feet.  These
properties produced at a gross average daily rate of 9,253.7 Mcf of gas per day
and 548.6 Bbls of oil per day (753.8 Mcf of gas per day and 46.1 Bbls of oil per
day net to the Company's interest) for the duration of the year ended April 30,
1999.  The University 10-18-1U well which was completed in the Fusselman
dolomite produced at a gross average daily rate of 6,175 Mcf of gas per day
throughout the year.  This amounts to approximately 67% of the gross gas
produced from the properties in which Alliance has an interest in these fields.
A number of proved undeveloped drilling locations have been identified on these
properties.  Net proved reserves to Alliance as of April 30, 1999 were 94.7
MBbls of oil and 1,697.2 MMcf of gas.

     Jefferson Island Field, Louisiana.  The Jefferson Island field is
located approximately 12 miles southwest of the town of New Iberia in Iberia
Parish, Louisiana.  Alliance has a working interest in a 525-acre lease on the
south side of Lake Peigner, which is currently being maintained by production
from the Will Drill Resources (Texaco) JISMC #4 well.  This well is now owned by
Continental Resources Limited ("Continental").  Production intervals are known
to exist in the Siphoni Davisi and Discorbis B sandstone reservoirs at depths of
approximately 8,000 to 9,000 ft.  The reservoir traps are combination
structural-stratigraphic traps in a piercement salt dome setting.  However,
Alliance has not yet established production from the property.  A number of
proved undeveloped drilling locations have been identified on the property and
the Company's working interest in this property is currently 100%. Net proved
reserves to Alliance as of April 30, 1999 were 431.7 MBbls of oil and 1,230.2
Mcf of gas.

                                                                               4
<PAGE>

     The Company entered into a farm-out agreement with Continental on this
property, whereby Continental, at its sole risk and expense, has conducted a 3D
seismic survey and is to drill and complete two wells on the lease to earn a
two-thirds working interest. Continental completed the 3-D seismic survey in
late 1998 and spudded the first well under the farm-out agreement in June 1999.
This well was drilled to a total depth of approximately 10,000 ft. and several
potentially productive pay zones were identified on electric logs in Siphoni
Davisi Sands at depths of 8,500 to 9,000 ft.  Continental is currently
attempting to complete the well in the lowermost potentially productive sand at
a depth of approximately 9,000 ft.

     Tinsley Field, Mississippi.  The Tinsley Field is located in Yazoo
County, Mississippi, and approximately 34 miles northwest of the town of
Jackson, Mississippi.  Alliance operates 5 active producing wells and 2
saltwater disposal wells.  Production is from upper Cretaceous age Eutaw Sands
at depths of around 4,500 ft.  This property produced at a gross average daily
rate of 55.4 Bbls of oil per day (45.4 Bbls of oil per day net to the Company's
interest) for the duration of the year ended April 30, 1999.  The Company has a
working interest in the property of 100%.  One proved undeveloped drilling
location has been identified on the property.  Net proved reserves to Alliance
as of April 30, 1999 were 360.3 MBbls of oil.

     South Elton Field, Louisiana.  The South Elton Field is located
approximately 19 miles north of the town of Jennings in Jefferson Davis Parish,
Louisiana.  Alliance operates 4 active producing oil and gas wells and 2
saltwater disposal wells.  Production is primarily from the Oligocene age sands
of the Homeseekers D Formation at a depth of approximately 9,000 ft.  This
property produced at a gross average daily rate of 140 Bbls of oil per day and
76.7 Mcf of gas per day (99.0 Bbls of oil per day and 45.6 Mcf of gas per day
net to the Company's interest) for the duration of the year ended April 30,
1999.  The Company has a working interest in the property of between 65.3% and
99.6%.  Another operator is currently acquiring a 3-D seismic survey over the
area and Alliance will receive copies of the data acquired over its property
within two months of completion of processing of the data.  One proved
undeveloped drilling location has been identified on the property.  Net proved
reserves to Alliance as of April 30, 1999 were 259.8 MBbls of oil and 86.4 Mcf
of gas.

     Perkins Field, Louisiana.  The Perkins Field is located approximately
4 miles south of the town of De Quincy in Calcasieu Parish, Louisiana.  Alliance
operates 7 active producing wells and 1 saltwater disposal well.  Production is
from various Miocene age sands at depths of 5,000 to 7,500 ft.  The property
produced at a gross average daily rate of 75.1 Bbls of oil per day (58.6 Bbls of
oil per day net to the Company's interest) for the duration of the year ended
April 30, 1999.  The Company has a working interest in the property of 100%.
Net proved reserves to Alliance as of April 30, 1999 were 221.7 MBbls of oil.

     In addition to these properties, the Company has other producing oil
and gas properties located in Alabama, Arkansas, Colorado, Kansas, Louisiana,
Michigan, Mississippi, Montana, Oklahoma and Texas.  These properties produced
at a gross daily rate of 2,847.4 Bbls of oil per day and 45,845.7 Mcf of gas per
day (281.9 Bbls of oil per day and 1,731.1 Mcf of gas per day net to the
Company's interest) for the duration of the year ended April 30, 1999. Net
proved reserves to Alliance, as of April 30, 1999, from these other properties
were 1,328.0 MBbls of oil and 6,520.2 Mcf of gas.

RESERVES

     Lee Keeling and Associates, Inc. ("LKA"), Alliance's independent
petroleum engineering consulting firm, has made estimates of Alliance's oil and
gas reserves at April 30, 1999.  LKA's report covers the estimated present value
of future net cash flows before income taxes (discounted at 10%) attributable to
Alliance's estimated future net cash flows therefrom.

     The quantities of Alliance's proved reserves of oil and natural gas
presented below include only those amounts which Alliance reasonably expects to
recover in the future from known oil and gas reservoirs under existing economic
and operating conditions.  Proved developed reserves are limited to those
quantities which are recoverable commercially at current prices and costs, under
existing regulatory practices and with existing technology.  Accordingly, any
changes in prices, operating and development costs, regulations, technology or
other factors could significantly increase or decrease estimates of Alliance's
proved developed reserves.  Alliance's proved undeveloped reserves include only
those quantities which Alliance reasonably expects to recover from the drilling
of new wells

                                                                               5
<PAGE>

based on geological evidence from offsetting wells. The risks of recovering
these reserves are higher from both geological and mechanical perspective than
the risks of recovering proved developed reserves.

     As required by the Securities and Exchange Commission, the estimates
of net proved reserves and proved developed reserves and the estimated future
net revenues from such reserves set forth below, have been made in accordance
with the provisions of Statement of Financial Accounting Standards No. 69,
"Disclosures about Oil and Gas Producing Activities."  Estimated future net cash
flows from proved reserves are determined by using estimated quantities of
proved reserves and the periods in which they are expected to be developed and
produced based on economic conditions at the date of the report.  The estimated
future production is priced at current prices at the date of the report.  The
resulting estimated future cash inflows are then reduced by estimated future
costs to develop and produce reserves based on cost levels at the date of the
report.  No deduction has been made for depletion, depreciation or for indirect
costs, such as general corporate overhead.  The discounted value was computed by
discounting future net revenues at 10% per annum, without deduction for income
taxes.

     The following table sets forth estimates of the proved oil and natural
gas reserves of Alliance at April 30, 1999, as evaluated by LKA.

<TABLE>
<CAPTION>
                                           Oil (MBbls)                                         Gas (Mmcf)
                           -------------------------------------------       ----------------------------------------------
                            Developed      Undeveloped        Total            Developed       Undeveloped         Total
                           ------------  ----------------  -----------       -------------  ------------------  -----------
<S>                        <C>           <C>               <C>               <C>            <C>                 <C>
     U.S. Reserves
     -------------
     Alabama                    3,855             2,030        5,885               6,429                   -        6,429
     Louisiana                    753               520        1,273                 766               2,458        3,224
     Mississippi                  487               144          631               7,228                   -        7,228
     Oklahoma                      61                 -           61               2,373                 548        2,921
     Texas                        406                13          419               2,463                  83        2,546
     Other                        439                 -          439                 260                 243          503
                                -----             -----        -----              ------               -----       ------
     Total                      6,001             2,707        8,708              19,519               3,332       22,851
                                =====             =====        =====              ======               =====       ======


</TABLE>

<TABLE>
<CAPTION>
                                           Oil (MBbls)                                         Gas (Mmcf)
                         ---------------------------------------------     ------------------------------------------------
                            Developed      Undeveloped        Total            Developed       Undeveloped         Total
                           ------------  ----------------  -----------       -------------  ------------------  -----------
<S>                        <C>           <C>               <C>               <C>            <C>                 <C>
     U.K. Reserves
     -------------
     Dalton Sweet
        Field                       -                -            -                    -             9,733         9,733
                           ============  ================  ===========       =============    ===============   ==========
</TABLE>

The following table sets forth amounts as of April 30, 1999 determined in
accordance with the requirements of the applicable accounting standards
pertaining to the estimated future net cash flows from production and sale of
the proved reserves attributable to Alliance's oil and gas properties before
income taxes and the present value thereof. Nymex benchmark prices used in
determining the future U.S. net cash flow estimates at April 30, 1999 were
$18.66 per barrel for oil and $2.35 per MMBtu for gas.  A delivery price of 9.05
pence per therm, equivalent to $1.54 per MMBtu for gas was used in determining
the future U.K. net cash flow estimates at April 30, 1999.

<TABLE>
<CAPTION>
                                                                   Proved            Proved            Total
                                                                  Developed        Undeveloped         Proved
                                                                   Reserves          Reserves         Reserves
                                                                -------------     -------------     -------------
                                                                                  (in thousands)
   <S>                                                      <C>                 <C>               <C>
     U.S. Reserves
     -------------
     Estimated future net cash flows from proved
        reserves before income taxes                             $   68,142         $   25,042        $   93,184
                                                                 ==========         ==========        ==========
     Present value of estimated future net cash flows
        from proved reserves before income taxes
        (discounted at 10%)                                      $   32,224         $   11,615        $   43,838
                                                                 ==========         ==========        ==========
     Standardized Measure                                        $   25,781         $    9,088        $   34,869
                                                                 ==========         ==========        ==========

</TABLE>

                                                                               6
<PAGE>

<TABLE>
   <S>                                                      <C>                 <C>               <C>
     U.K. Reserves
     -------------
     Estimated future net cash flows from proved
        reserves before income taxes                             $        -         $    3,926        $    3,926
                                                                 ==========         ==========        ==========
     Present value of estimated future net cash flows
        from proved reserves before income taxes
        (discounted at 10%)                                      $        -         $    2,794        $    2,794
                                                                 ==========         ==========        ==========
     Standardized Measure                                        $        -         $    2,794        $    2,794
                                                                 ==========         ==========        ==========
</TABLE>

     The estimation of oil and gas reserves is a complex and subjective
process which is subject to continued revisions as additional information
becomes available.  Reserve estimates prepared by different engineers from the
same data can vary widely.  Assumptions have to be made regarding the timing of
future production and the timing and amount of future development and production
costs.  The calculations assume that economic conditions existing at the end of
the reporting period will continue.  Other, but equally valid, assumptions might
lead to a significantly different final result.  Therefore, the reserve data
presented herein should not be construed as being exact.  Any reserve estimate
presented herein should not be construed as being exact.  Any reserve estimate
depends in part on the quality of available data, engineering and geologic
interpretation, and thus represents only an informed professional judgment.
Subsequent reservoir performance may justify upward or downward revision of such
estimate.  The information provided, therefore, does not represent management's
estimate of Alliance's expected future cash flows or value of proved reserves.

     Alliance has filed estimates of proved reserves with the London Stock
Exchange.  These estimates do not differ materially from those contained in this
document.

     For further information on reserves, costs relating to oil and gas
activities, and results of operations from producing activities, see Note 17 to
the Consolidated Financial Statements--Supplementary Financial Information for
Oil and Gas Producing Activities incorporated by reference herein.

     The following table sets forth Alliance's producing wells at April 30,
1999.

<TABLE>
<CAPTION>
                                                             Productive Wells
                                 Oil                              Gas                              Total
                        ---------------------            ----------------------           -----------------------
                        Gross            Net             Gross             Net            Gross              Net
                        -----           -----            -----            -----           -----             -----

  <S>                 <C>            <C>                <C>            <C>              <C>              <C>
     U.S.                 148           100.1              118             41.3             266             141.4
                          ---           -----              ---             ----             ---             -----
     U.K.                   -               -                2              0.2               2               0.2
                          ---           -----              ---             ----             ---             -----
     Total                148           100.1              120             41.5             268             141.6
                          ===           =====              ===             ====             ===             =====
</TABLE>


     Productive wells consist of producing wells and wells capable of
production, including gas wells awaiting pipeline connections to commence
deliveries and oil wells awaiting connection to production facilities.  Wells
that are completed in more than one producing horizon are counted as one well.
Of the gross wells reported above, 12 had multiple completions.

Developed and Undeveloped Acreage

     The following table sets forth the developed and undeveloped leasehold
acreage held by Alliance at April 30, 1999.  Developed acres are acres that are
spaced or assignable to productive wells.  Undeveloped acres are acres on which
wells have not been drilled or completed to a point that would permit the
production of commercial quantities of oil and gas, regardless of whether or not
such acreage contains proved reserves.  Gross acres are the total number of
acres in which Alliance has a working interest.  Net acres are the sum of
Alliance's fractional interests owned in the gross acres.

     States in which Alliance held developed and undeveloped acreage at
April 30, 1999 include Alabama, Arkansas, Colorado, Kansas, Louisiana,
Mississippi, Montana, New Mexico, North Dakota, Oklahoma, Texas and Wyoming.

                                                                               7
<PAGE>

<TABLE>
<CAPTION>
                                                                            Gross          Net
                                                                          ---------      --------
     U.S.
     ----
<S>                                                                      <C>        <C>
     Developed acreage.........................................            27,011.9      20,102.7
     Undeveloped acreage.......................................            10,956.6       8,428.5
                                                                          ---------      --------
     Total.....................................................            37,968.5      28,531.2
                                                                          =========      ========

                                                                             Gross          Net
                                                                          ---------      --------
     U.K.
     ----
     Developed acreage.........................................             1,462.0         146.2
     Undeveloped acreage.......................................           206,658.0      20,665.8
                                                                          ---------      --------
     Total.....................................................           208,120.0      20,812.0
                                                                          =========      ========

</TABLE>

PRODUCTION, UNIT PRICES AND COSTS

     The following table sets forth information with respect to sales of
production and average unit prices and costs for the periods indicated.

<TABLE>
<CAPTION>
                                                                                           Nine months
                                                            Year ended April 30          ended  April 30,
                                                         -------------------------       ---------------
                                                           1999 (2)        1998               1997
                                                         ----------     ----------       ---------------

   <S>                                                 <C>            <C>                <C>
     Production:
         Gas (Mmcf)                                           1,402          1,689                 1,640
         Oil (MBbls)                                            278            396                   190

     Average sales prices (1)
         Gas (per Mcf)                                     $   1.79       $   2.36              $   1.70
         Oil (per Bbl)                                     $  13.20       $  15.75              $  15.34

     Average production costs per BOE (3)                  $   6.05       $   8.13              $   6.77

</TABLE>

(1)  After giving effect to the impact of Alliance's price hedging arrangements
     with Alliance's principal bank. Without such hedging arrangements, the
     average sales prices for the years ended April 30, 1999 and 1998 would have
     been $10.11 and $15.14 for oil and $1.92 and $2.34 for gas, respectively,
     and $19.15 for oil and $2.40 for gas for the nine months ended April 30,
     1997.

(2)  No figures are included for U.K. production activities since first
     production is not anticipated until mid-August 1999.

(3)  The components of production costs may vary substantially among wells
     depending on the methods of recovery employed and other factors, but
     generally include production taxes, lease overhead, maintenance and repair,
     labor and utilities.

                                                                               8
<PAGE>

(4)  DRILLING ACTIVITY

     During the periods indicated, Alliance drilled or participated in the
drilling of the following exploratory and development wells.  The information
excludes wells in which Alliance has only an overriding interest.

<TABLE>
<CAPTION>
                                         Year ended April 30                  Nine months ended April 30
                          -------------------------------------------------  ----------------------------
                                     1999                     1998                      1997
                          --------------------------  ---------------------  ----------------------------
                             Gross          Net         Gross       Net          Gross          Net
                          -----------  -------------  ---------  ----------  -------------   ------------
<S>     <C>               <C>          <C>            <C>        <C>         <C>            <C>
U.S.
- ------
   Exploratory:
        Productive                  -              -          -           -              -            -
        Non-Productive              -              -          1        0.10              -            -
                          -----------  -------------  ---------  ----------  -------------  -----------
           Total                    -              -          1        0.10              -            -
                          ===========  =============  =========  ==========  =============  ===========

   Development:
        Productive                  -              -          7        0.53              2          .20
        Non-Productive              -              -          -           -              -            -
                          -----------  -------------  ---------  ----------  -------------  -----------
           Total                    -              -          7        0.53              2          .20
                          ===========  =============  =========  ==========  =============  ===========

   Total:
        Productive                  -              -          8        0.53              2          .20
        Non-Productive              -              -          1        0.10              -            -
                          -----------  -------------  ---------  ----------  -------------  -----------
           Total                    -              -          9        0.63              2          .20
                          ===========  =============  =========  ==========  =============  ===========
U.K.
- ------
    Development:
        Productive                  1            0.1          -           -              -            -
        Non-Productive              -            0.0          -           -              -            -
                          -----------  -------------  ---------  ----------  -------------  -----------
           Total                    1            0.1          -           -              -            -
                          ===========  =============  =========  ==========  =============  ===========
</TABLE>

At April 30, 1999, Alliance was not participating in the drilling of any oil and
gas wells.

All of Alliance's drilling activities are conducted with independent
contractors. Alliance owns no drilling equipment.

TITLE TO PROPERTIES

     As is customary in the oil and gas industry, Alliance conducts only a
perfunctory title examination at the time properties believed to be suitable for
drilling operations are first acquired.  Prior to commencement of drilling
operations, a thorough drill site title examination is normally conducted and
curative work is performed with respect to significant defects.  During
acquisitions, title reviews are performed on all material properties being
acquired.


ITEM 3.  LEGAL PROCEEDINGS

     The Group is a named defendant in lawsuits, and is subject to claims of
third parties from time to time arising in the ordinary course of business.
While the outcome of lawsuits or other proceedings and claims against the Group
cannot be predicted with certainty, management does not expect these additional
matters to have material adverse effect on the financial position or results of
operations or liquidity of the Group.

                                                                               9
<PAGE>

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

     On October 30, 1998, Alliance held an Extraordinary General Meeting in
which it adopted resolutions approving the following items:

     (a)   the acquisition by Alliance of all of the issued share capital of
           Difco Limited ("Difco") in exchange for 10 million newly created
           convertible restricted voting shares of 1p each (the "Convertible
           Restricted Voting Shares") and a contingent right to receive
           additional shares, subject to the sales of production actually
           achieved from the U.K. Interests (as defined below);

     (b)   the acquisition through Difco of an undivided ten percent (10%) of
           the interest of Burlington Resources (Irish Sea) Limited in and to 13
           blocks in the East Irish Sea and Liverpool Bay areas off the West
           Coast of the United Kingdom (the "U.K. Interests") for a cash
           consideration of approximately $17.8 million;

     (c)   the creation of the Convertible Restricted Voting Shares and the
           allotment of the Convertible Restricted Voting Shares and the
           additional shares issuable under the terms of the acquisition
           agreement between Alliance and the Difco shareholders;

     (d)   the allotment of certain ordinary shares and warrants to the lenders
           of Alliance and the allotment of equity securities in other specified
           instances;

     (e)   the increase of the borrowing powers of the Directors;

     (f)   a reduction in the par value of the ordinary shares of the Company;

     (g)   the adoption of certain amendments to the Articles of Association of
           the Company; and

     (h)   other matters relating to the foregoing.

                                                                              10
<PAGE>

                                    PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED SHAREHOLDER
        MARKET INFORMATION AND DIVIDENDS

     The Company's Ordinary Shares are traded on the London Stock Exchange
under the symbol "ARS."

     The following table sets forth in pounds, for the calendar quarter
indicated, the high and low sales prices for the Alliance Shares on the London
Stock Exchange (in pence) for the periods indicated derived from the official
list of the London Stock Exchange.  Bid quotations represent quotations between
dealers without adjustment for retail mark-ups, mark-downs or commissions and
may not necessarily represent actual transactions.

<TABLE>
<CAPTION>
                                                                    Prices
                                                            Alliance Ordinary Shares
                                                          ----------------------------
                                                               High          Low

     <S>                                                    <C>           <C>
        Fiscal year ended April 30, 1998
           First Quarter                                         60          23.5
           Second Quarter                                      35.5            25
           Third Quarter                                       29.5            23
           Fourth Quarter                                      32.5            21

        Fiscal year ended April 30, 1999
           First Quarter                                       32.5          32.5
           Second Quarter                                      32.5          32.5
           Third Quarter                                         19             8
           Fourth Quarter                                         8           4.5
</TABLE>


     As of April 30, 1999, the approximate number of record holders of the
Alliance Ordinary Shares was 2,300.

     Quotations for shares listed on the London Stock Exchange are not
generally readily available in newspapers or other publication in the United
States, but are available in the daily U.S. edition of the Financial Times.
However, investors may place orders for the purchase or sale of shares traded on
the London Stock Exchange through most licensed broker dealers in the United
States.  Under current U.K. law, the transfer of Alliance Shares will generally
give rise to a liability to U.K. stamp duty, normally at the rate of 50p for
every (Pounds)100 (or part thereof) of the actual consideration paid.

     Alliance has not paid any cash dividends on the Alliance Shares for at
lease the last two complete fiscal years.  In addition, Alliance is now
restricted from paying dividends under the Company's credit agreement with the
Bank of America.

EXCHANGE RATES

     The table below sets forth, for the periods and dates indicated,
certain information regarding the US dollar/pound sterling exchange rate, based
on the Noon Buying Rate, expressed in US dollars per (Pounds)1.00.

<TABLE>
<CAPTION>
        Calendar Year              Period End             Average Rate              High                Low
        -------------             ------------            ------------           ----------          ---------
      <S>                        <C>                     <C>                     <C>                <C>
           1996                              1.71                      1.56               1.72               1.49
           1997                              1.64                      1.64               1.70               1.58
           1998                              1.66                      1.66               1.71               1.61
           1999 (1)                          1.61                      1.63               1.66               1.59
</TABLE>

     (1) 1999 exchange rates are for the period from January 1, 1999 to April
         30, 1999 only.

                                                                              11
<PAGE>

ITEM 6.  SELECTED FINANCIAL DATA

     On May 1, 1997, Alliance completed its acquisition of LaTex.  The
acquisition resulted in the issuance of 21,448,747 shares to the former
shareholders of LaTex compared to the 8,103,816 shares then outstanding.  As a
result, the former LaTex shareholders had a controlling interest in the combined
group and so for accounting and financial reporting purposes, LaTex is treated
as having acquired Alliance ("Reverse Acquisition").  The historical financial
information for all financial periods to April 30, 1997 reflect the results of
operations and assets and liabilities of LaTex.  LaTex's fiscal year end was
July 31, whereas that of Alliance is April 30.

     On October 30, 1998, Alliance completed its acquisition of Difco and
indirectly a contract to acquire an interest in the U.K. Interests.  The results
of operations and assets and liabilities of Difco have been included since the
date of acquisition.

                                                                              12
<PAGE>

The selected financial information presented below should be read in conjunction
with the Company's audited financial statements and the notes thereto included
under Item 8 and Management's Discussion and Analysis of financial Condition and
Results of Operations at item 7.

              SELECTED CONSOLIDATED FINANCIAL AND OPERATING DATA
        (in thousands, except per share amounts and average sales data)

<TABLE>
<CAPTION>
                                                                                  Nine months ended
                                                           Year ended April 30        April 30        Years ended July 31
Income Statement Data:                                      1999         1998            1997           1996       1995
                                                          --------     --------        --------       --------    --------
<S>                                                       <C>          <C>        <C>                 <C>         <C>
      Revenues:
         Oil and gas sales                                $  6,234     $ 10,210        $  5,699       $ 11,980    $  8,586
         Crude oil and gas marketing                            --           --             146            540       1,223
                                                          --------     --------        --------       --------    --------
            Total revenues                                   6,234       10,210           5,845         12,520       9,809
                                                          --------     --------        --------       --------    --------

      Operating expenses:
         Lease operating expense                             3,096        5,506           3,117          5,472       4,643
         Cost of crude oil and gas marketing                    --           --              16            133         744
         Cessation of overseas exploration (1)                  --           --              --          3,447          --
         General and administrative                          3,486        3,364           3,481          2,893       2,736
         Depreciation, depletion and amortization            1,671        2,598           1,542          3,511       3,364
         Impairment of oil and gas properties               28,260           --              --             --          --
         Loss on termination of derivative contract (2)         --        1,128              --             --          --
                                                          --------     --------        --------       --------    --------
            Total operating expenses                        36,513       12,596           8,156         15,456      11,487
                                                          --------     --------        --------       --------    --------
           Loss from operations                            (30,279)      (2,386)         (2,311)        (2,936)     (1,678)
                                                          --------     --------        --------       --------    --------

      Other income(expense):
         Equity in losses and write-offs of investments
            in affiliates                                       --           --             (20)        (4,034)       (235)
         Write-off deferred loan costs                        (870)          --              --             --          --
         Gain(loss) on sale of assets                           (9)          35              --             --          --
         Interest income                                        26           62              52            280          58
         Interest expense                                   (3,355)      (2,573)         (2,102)        (2,830)     (1,416)
         Miscellaneous income(expense) (3)                      23          133              (8)        (1,810)         --
                                                          --------     --------        --------       --------    --------
          Net loss before income taxes                     (34,464)      (4,729)         (4,389)       (11,330)     (3,271)
      Income tax expense                                        --           --              --             --         (35)
                                                          --------     --------        --------       --------    --------
          Net loss                                         (34,464)      (4,729)         (4,389)       (11,330)     (3,306)
      Preferred stock dividends                                 --           --             518            571         133
                                                          --------     --------        --------       --------    --------
            Net loss for ordinary shareholders            $(34,464)    $ (4,729)       $ (4,907)      $(11,901)   $ (3,439)
                                                          ========     ========        ========       ========    ========

      Income(loss) per share                              $  (0.82)    $  (0.15)       $  (0.30)      $  (0.77)   $  (0.22)
                                                          ========     ========        ========       ========    ========

      Weighted average shares outstanding (4)               41,936       31,126          16,585         15,508      15,317
                                                          ========     ========        ========       ========    ========

Balance Sheet Data (end of period):
      Total assets                                        $ 36,162     $ 34,760        $ 30,858       $ 36,493    $ 46,549
      Net property, plant and equipment                     30,355       29,808          26,708         29,473      36,336
      Working capital(deficit)                              (5,621)      (9,480)         (9,620)       (27,970)     (7,264)
      Long term debt                                        43,177       18,792          18,095             --      20,635
      Stockholders' equity (deficit)                       (16,637)       2,183              85          3,846      14,628

Reserve and Production Data:
      Production:
         Oil (MBbls)                                           278          396             190            405         359
         Gas (MMcf)                                          1,402        1,689           1,640          3,481       2,612
      Average sales prices:
         Oil (per Bbl)                                    $  13.20     $  15.75        $  15.34       $  15.24    $  12.86
         Gas (per Mcf)                                        1.79         2.36            1.70           1.67        1.48
      Proved reserves (end of period):
         Oil (MBbls)                                         8,708        6,494           6,581          6,353       5,432
         Gas (MMcf)                                         32,584       26,321          25,955         28,172      28,113
Present value of estimated future oil and gas net
      revenues before income taxes (discounted 10%)       $ 46,642     $ 48,600        $ 39,631       $ 53,499    $ 32,912
Standardized Measure                                      $ 37,663     $ 45,106        $ 35,368       $ 43,889    $ 28,802
</TABLE>

<PAGE>

1)   During the year ended July 31, 1996, the Company ceased its overseas
     exploration activities in both Tunisia and Kazakhstan and wrote off its
     costs relating to these activities of $3,447.

2)   On May 15, 1997, the existing commodity price hedging agreements were
     terminated through a buyout. On October 23, 1997, new commodity price
     hedging agreements were initiated. The loss relating to the buy-out, $1,128
     has been recognized in its entirety in the year ended April 30, 1998.

3)   The miscellaneous expenses in the year ended July 31, 1996 arose from
     litigation in connection with the sale in July 1993 of a subsidiary of the
     Company.

4)   For periods ending on or before April 30, 1997, the weighted average number
     of shares outstanding has been based on the number of Alliance shares
     issued on May 1, 1997, which represent the number of LaTex shares
     outstanding in each of the relevant periods based on the exchange ratio in
     the acquisition of LaTex. The loss for each period is stated after
     deducting dividends on the LaTex preferred stock.


ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
         RESULTS OF OPERATIONS

     The Company's acquisition of LaTex on May 1, 1997 has been accounted for as
a "reverse acquisition" of the Company by LaTex. As such, the historical
financial statements and financial information as of and for each of the years
in the two-year period ended July 31, 1996 and for the nine-month period ended
April 30, 1997 are for the business of LaTex alone and include no information
for the Company.

     The information in this "Management's Discussion and Analysis of Financial
Condition and Results of Operations" refers to the Consolidated Financial
Statements of Alliance included in this Form 10-K which are presented in
accordance with U.S. GAAP.

     Unless otherwise indicated, the financial information in this Form 10-K has
been prepared in accordance with U.S. generally accepted accounting principles
("U.S. GAAP").  U.S. GAAP differs in certain respects from generally accepted
accounting principles in the U.K. ("U.K. GAAP").  As a result of the Company's
listing on the London Stock Exchange, the Company is required to file reports
with the London Stock Exchange prepared in accordance with U.K. GAAP.

RESULTS OF OPERATIONS

     The factors which most significantly affect results of operations are (i)
the sale prices of crude oil and gas, (ii) the level of total sales volumes,
(iii) the level of lease operating expenses and (iv) the level of and interest
rates on borrowings. Total sales volumes and the level of borrowings are
significantly impacted by the degree of success in efforts to acquire oil and
gas properties and in the ability to maintain or increase production from
existing oil and gas properties through development activities.

     The following table reflects certain historical operating data for the
periods presented.

                                                                              14
<PAGE>

<TABLE>
<CAPTION>
                                                                                        Nine Months
                                                             Year ended April 30       ended April 30
                                                            ----------------------    ----------------
                                                               1999        1998             1997
                                                            ----------------------    ----------------
   <S>         <C>                                          <C>           <C>           <C>
     Net sales volumes
           Oil (Mbbls)                                           278           396              190
           Natural gas (Mmcf)                                  1,402         1,689            1,640
           Oil equivalent (MBOE)                                 512           678              463

     Average sales prices
           Oil (per Bbl)                                      $13.20        $15.75           $15.34
           Natural gas (per Mcf)                              $ 1.79        $ 2.36           $ 1.70

     Operating expenses per BOE of net sales
           Lease operating                                    $ 5.41        $ 7.16           $ 5.55
           Severance tax                                      $ 0.64        $ 0.97           $ 1.22
           Depreciation, depletion and amortization           $ 3.27        $ 3.84           $ 3.33
           General and administrative                         $ 6.81        $ 4.97           $ 7.52
           Loss on termination of commodity
             derivative contract                              $    -        $ 1.67           $    -
</TABLE>

YEAR ENDED APRIL 30, 1999 COMPARED TO THE YEAR ENDED APRIL 30, 1998

     Total revenues for the year ended April 30, 1999 were $6,234,477 compared
to $10,209,881 for the year ended April 30, 1998. This 39% decrease in total
revenue can be attributed to a 30% decrease in oil sales volumes (primarily at
the South Carlton Alabama field), and a 17% decrease in natural gas sales
volumes. A portion of the decreased sales volumes is due to the sale of non-
operated, non-strategic properties. Additionally there was a 16% decrease in the
average sales price received for oil, and a 24% decrease in the average sales
price received for natural gas. Crude oil contributed 56% and natural gas
contributed 44% of oil and gas production revenues during the year ended April
30, 1999. For the year ended April 30, 1998, crude oil contributed 61% and
natural gas contributed 39% of oil and gas production revenues, respectively.

     Lease operating expenses decreased 44% to $3,096,468 for the year ended
April 30, 1999, compared to $5,505,826 for the year ended April 30, 1998. The
reduction in operating expenses is a result of a reduced property base, lower
expenses in the Alabama operations, and the shutting-in of marginal operated
wells. On an equivalent barrel basis, lease operating expenses decreased by
$1.75 to $5.41 for the year ended April 30, 1999, compared to $7.16 for the year
ended April 30, 1998.

     Depreciation, depletion and amortization expense decreased 36% from
$2,598,066 for the year ended April 30, 1998 to $1,670,711 for the year ended
April 30, 1999. This was due primarily to lower production volumes and reserve
revisions resulting from price declines. On an equivalent barrel basis
depreciation, depletion, and amortization decreased $0.57 to $3.27 for the year
ended April 30, 1999, compared to $3.84 for the year ended April 30, 1998.

     Alliance limits, on a country-by-country basis, the net capitalized cost of
proved oil and gas properties, to estimated future net cash flows from proved
oil and gas reserves discounted at 10 percent, net of related tax effects, plus
the lower of cost or fair value of unproved properties included in the costs
being amortized.  Since the acquisition of the U.K. Interests on October 30,
1998, developments plans have become firmer, drilling and well re-entry and
recompletion result on 3 wells have been reviewed and significant progress has
been made on the development of the Dalton and Millom Fields.  This additional
information indicates that, while the aggregate reserves estimates at the time
of acquisition are confirmed, the reserves are likely to be produced at a slower
rate than originally anticipated and that development costs are likely to be in
excess of those originally anticipated.  These factors have led to an impairment
in value of the U.K. Interests.  The Company intends to sell a significant
portion of its production from the U.K. Interests

                                                                              15
<PAGE>

under a term contract which will achieve prices significantly greater than the
spot price of gas at April 30, 1999 (9.05 pence per therm). The Directors are
confident of achieving a price of between 13 and 15 pence per therm. (This is a
forward-looking statement; refer to the Cautionary Statement Regarding Forward
Looking Statements). However, as no contract is yet in place, the Group has
utilized the spot price at April 30, 1999 in calculating the carrying cost limit
resulting in an impairment charge of some $28 million. The charge has no impact
on cash flows from operating activities.

     Interest costs for 1999 increased $780,981, or 25%, from 1998 primarily due
to the revised credit facility put in place to fund the East Irish Sea
acquisition and development. In 1999, Alliance wrote off $869,906 in deferred
loan costs related to the Company's previous credit facility.

     General and administrative expenses for the year ended April 30, 1999 were
$3,486,007 which represents an increase of 3.6% over the $3,363,885 incurred in
the prior fiscal year. On an equivalent barrel basis general and administrative
expenses rose by $1.84 to $6.81 for the year ended April 30, 1999 compared to
$4.97 for the year ended April 30, 1998.

     The net loss for the year ended April 30, 1999 was $34,463,502 ($0.82 per
ordinary share) compared to a net loss of $4,728,923 ($0.15 per ordinary share)
for the year ended April 30, 1998.

YEAR ENDED APRIL 30, 1998 COMPARED TO NINE MONTHS ENDED APRIL 30, 1997

     Total revenues from the Company's operations for the year ended April 30,
1998 were $10,209,881 compared to $5,844,871 for the nine months ended April 30,
1997.  Revenues increased proportionately over the comparable period a year
earlier due principally to the beneficial effect of higher realized gas and
higher oil volumes, offset partially by the absence of marketing margins in the
revenue category.  The higher oil volumes were partially attributable to the
inclusion of Alliance's sales volumes and additional volumes attributable to the
acquisition of the BoA ORRI in the 1998 period following the LaTex Merger.
Although sales volumes for the year ended April 30, 1998, were adversely
affected by a continuing decline in volumes from the LaTex properties during the
initial three months of the period, the remedial work program had a beneficial
impact on volumes from the LaTex properties (discussed below).  In addition, the
inclusion of Alliance's sales volumes from the start of the current reporting
period more than compensated for the initial decline in the LaTex properties.

     The Company concentrated its efforts immediately after the LaTex Merger on
increasing production from eleven existing producing fields operated by LaTex in
the states of Alabama, Mississippi, Oklahoma, Texas and Louisiana.  Workover
operations on these fields commenced in early May 1997 and comprised mainly
returning shut-in wells to production.  Gross production from these eleven
fields was increased from an average of 244 BOE per day in April 1997 to an
average of 980 BOE per day by October 1997.  Most of the production increase
came from remedial workover operations in the South Carlton field in Alabama.
Gross production from this field alone increased from an average of 89 BOE per
day in April 1997 to an average of 575 BOE per day in September 1997.

     Total operating expenses increased proportionately to $12,595,777 for the
year ended April 30, 1998 compared to $8,155,557 for the nine months ended April
30, 1997.  On May 15, 1997, the existing commodity price hedging arrangements
were bought out with a loss of $1,128,000 recognized in its entirety in the year
ended April 30, 1998 as a result of new agreements being initiated on October
23, 1997.  Lease operating expenses increased to $5,505,826 for the year ended
April 30, 1998 compared to $3,117,341 for the nine months ended April 30, 1997.
The year ended April 30, 1998 was impacted by the remedial work program
mentioned above and the inclusion of the Alliance properties partially offset by
lower operating costs due to the sale of non-operated, non-strategic wells.
Depreciation, depletion and amortization increased to $2,598,066 for the 1998
period compared to $1,541,415 due to higher volumes resulting from the inclusion
of Alliance.  General and administrative expenses decreased marginally from
$3,481,003 during the nine months ended April 30, 1997 to $3,363,885 for the
year ended April 30, 1998 primarily due to an employee stock award of $528,125
in the 1997 period.

                                                                              16
<PAGE>

     In addition to the marginal increase in the net operating loss to
$2,385,896 for the year ended April 30, 1998 from $2,310,686 for the nine months
ended April 30, 1997, there was also a proportionate decrease in other
income/expense.  This was the result of higher interest expense taking into
account the additional quarterly payment.

     In summary, due to the above factors, the net loss for the ordinary
shareholders for the year ended April 30, 1998 decreased to $4,728,923 ($0.15
per ordinary share) compared to a net loss of $4,906,946 ($0.30 per ordinary
share) for the nine months ended April 30, 1997.

CAPITAL RESOURCES AND LIQUIDITY

     The Company's capital requirements relate primarily to the acquisition of
developed oil and gas properties and undeveloped leasehold acreage and
exploration and development activities, and the servicing of the Company's debt.
In general, because the Company's oil and gas reserves are depleted by
production, the success of its business strategy is dependent upon a continuous
acquisition and exploration and development program and the acquisition of
additional reserves.

CASH FLOWS AND LIQUIDITY

     At April 30, 1999, Alliance reported current assets of $2,451,077 and
current liabilities of $8,072,252, which resulted in a net current deficit of
$5,621,175.

     For the year ended April 30, 1999 and April 30, 1998, Alliance's operating
activities resulted in negative cash flow of $3,991,251 and $5,184,000,
respectively. The Company had a positive cash flow of $2,098,566 for the nine
months ended April 30, 1997.

     Investing activities of Alliance used $24,174,756 as compared to providing
$3,084,970 in net cash flow for the years ended April 30, 1999 and April 30,
1998, respectively.  The 1999 increase was a result of the acquisition of Difco
and the U.K. Interests as well as the capital expenditures for oil and gas
development activities.

     Financing activities provided $28,043,726 for the year ended April 30,
1999, compared to $2,434,660 for the year ended April 30, 1998.  The increase
was due primarily to the issuance of long-term debt of $45,464,123, the issuance
of common stock for $6,360,000, the refinancing of long-term debt of $22,566,762
and the payment of loan acquisition costs of $1,213,635, all in connection with
the Difco and U.K. Interests acquisitions.

     The domestic spot prices of oil and gas have traded, in a volatile manner
over various periods in recent years. To the extent that oil and gas prices are
volatile, material fluctuations in revenues from quarter to quarter can be
expected which, in turn, could adversely affect the Company's ability to service
its debt with its principal bank in a timely manner and to fund its ongoing
operations and could, under certain circumstances, require a write-down of the
book value of the Company's oil and gas reserves.

     The Company continues to experience net losses and working capital
deficits. These factors may indicate the Company will be unable to continue as a
going concern for a reasonable period of time. Despite its negative cash flow,
the Company has been able to secure financing to support its operations to date.
The Company was not in compliance with certain covenants of its loan agreements
at April 30, 1999, however, a waiver has been obtained for such violations.
Agreement has been reached with the Company's principal lender to amend the
terms of its credit agreement to allow for additional immediate borrowings of
$5,000,000, to defer the date of the repayment of a portion of its indebtedness
from January 31, 2001 to July 31, 2001 and to defer the date of the borrowing
base redetermination from July 31, 1999 to December 31, 1999. The amendment does
not change the scheduled repayment dates of other portions of its debt, the
first payment of which is due July 31, 2000.

                                                                              17
<PAGE>

  The Company's continuation as a going concern is dependent upon its ability to
generate sufficient cash flow to meet its obligations on a timely basis, to
continue to comply with the terms of its borrowing agreements, to obtain
additional financing or refinancing as will be required and ultimately to attain
profitability.  Management believes it has a business plan that, if successfully
executed, will achieve these objectives.

CAPITAL EXPENDITURES

  The timing of most of the Company's U.S. capital expenditures is
discretionary.  Currently, there are no material long-term commitments
associated with the Company's U.S. capital expenditure plans.  Consequently, the
Company has a significant degree of flexibility to adjust the level of such
expenditures as circumstances warrant.  The Company primarily uses funds
available under its credit facility and proceeds from the sale of oil and gas
properties to fund capital expenditures, other than significant acquisitions,
and to fund its working capital deficit.  If the Company's internally generated
cash flows should be insufficient to meet its banking or other obligations, the
Company may reduce the level of discretionary U.S. capital expenditures or
increase the sale of non-strategic oil and gas properties in order to meet such
obligations.

  The timing of the Company's U.K. capital expenditures is determined annually
by a budget prepared by Burlington and approved by Alliance.  Currently, there
are material commitments for the 2000 fiscal year.  These commitments will be
met by funds available under the Company's credit facility and internally
generated cash flow.

  The level of the Company's capital expenditures will vary in future periods
depending on energy market conditions and other related economic factors.  As a
result, the Company will continue its current policy of funding capital
expenditures with funds available under its credit facility and internally
generated cash flow.  (This is a forward-looking statement; refer to the
Cautionary Statement Regarding Forward Looking Statements).

FINANCING ARRANGEMENTS

  Alliance entered into a Credit Agreement (the "Alliance Credit Agreement")
with the Bank of America effective May 1, 1997, amending and restating the
Group's previous credit agreement.  A portion of the borrowings under the
Alliance Credit Agreement bore interest, payable monthly, at a rate equal to the
higher of the Bank of America Reference Rate plus 1% and the Federal Funds Rate
plus 1-1/4%.  Another portion of the borrowings bore interest, payable monthly,
at a rate equal to the London Interbank Offered Rate plus 2%.  The rate at April
30, 1998 was 7.875%.  Principal payments were scheduled to commence on October
31, 1998.  The note was scheduled to mature on March 31, 2000.  Amounts
outstanding were secured by mortgages which cover the majority of the Group's
oil and gas properties.

  In connection with the Difco Acquisition, the Company entered into agreements
with Bank of America National Trust & Savings Association ("BoA"), Alliance's
principal lender and EnCap Equity 1996 Limited Partnership and EnCap Capital
Investment Company PLC (collectively "EnCap") providing up to $64,750,000 in
debt, as follows:

                   BoA:
                      Tranche A                    $30,000,000
                      Tranche B                     20,000,000
                      Tranche C                      5,000,000
                                                   -----------
                                                    55,000,000
                   EnCap                             9,750,000
                                                   -----------
                                                   $64,750,000
                                                   ===========

  Tranche A consists of a revolving credit facility secured by a first priority
lien and security interest in all of the oil and gas properties of the Company.
The Company's initial borrowing base is $18,500,000 and is redetermined
semiannually on January 31 and July 31.  Interest is at a rate determined by the
Company from time to time, of either

                                                                              18
<PAGE>

(i) the greater of BoA's refernce rate and the federal funds effective rate plus
0.5%, or (ii) 2.0% above the current Interbank rate (7.5% at April 30, 1999).
While any Tranche B loan is outstanding, the preceding margins will be increased
by an additional 0.5% semi-annually on April 26 and on October 26 of each year.
Interest is payable quarterly and principal is due in equal quarterly payments
beginning October 30, 2000 and ending on October 30, 2003.

  Tranche B consists of a credit facility secured by a first priority lien and
security interest in all of the oil and gas properties of the Company.  Interest
is at a rate determined by the Company from time to time, of either (i) BoA's
Tranche B reference rate plus 2.0%, or (ii) 4.0% above the current Interbank
rate (9.0% at April 30, 1999).  The margins for all Tranche B loans will be
increased by an additional 0.5% semi-annually on April 26 and on October 26 of
each year.  Interest is payable quarterly and principal is due in full on
January 31, 2001.

  Tranche C consists of a credit facility secured by a first priority lien and
security interest in all of the oil and gas properties of the Company.  Interest
is at a rate determined by the Company from time to time, of either (i) BoA's
reference rate plus 5.0%, or (ii) 7.0% above the current Interbank rate (12.0%
at April 30, 1999).  Interest is payable quarterly and principal is due in equal
quarterly payments beginning January 31, 2001 and ending on October 30, 2004.
The BoA debt facility contains various covenants, including, but not limited to,
maintenance of minimum current and interest coverage ratios, as defined in the
agreement.

  EnCap debt is unsecured and bears interest at 10%.  Interest is payable
quarterly and principal is due in full on October 30, 2005.  Until October 30,
2001, the Company has the option, in lieu of paying cash, of increasing the
principal amount of the debt by the interest due.

  The Company paid BoA a cash fee of $700,000 and granted BoA warrants to
purchase 3,275,000 ordinary shares at a price of 1p per share.  The fair value
of the warrants $1,335,000 attaching to the debt was treated as a discount.  In
addition, the Company will grant BoA an overriding royalty interest, valued at
the value of the underlying oil and gas reserves, in the U.K. Interests of 0.3%
beginning January 1, 2001.  The overriding royalty interest will entitle BoA to
receive payment equal to the specified percentage of the net revenues generated
by the  U.K. Interests and has the effect of reducing the Company's revenues
from the U.K. Interests.  In connection with obtaining the debt financing from
BoA, the Company was required to enter into commodity price risk management
contract on terms that are mutually agreeable to BoA and the Company for a
period not less than two years with respect to at least 50% of the Company's
estimated producing reserves as of October 31, 1998.  BoA also required the
Company to enter into interest rate risk management contracts providing for a
maximum interest rate of 9.0% on the notional amount projected to be outstanding
on the revolving credit facility.

  The Company was not in compliance with certain covenants of the loan
agreements, which included but were not limited to the maintenance of minimum
levels of working capital and interest coverage. Prior to these violations
causing an event of default, which would have resulted in an acceleration of the
repayment of the loans, the Company obtained waivers from the lenders for all
covenant violations. Effective July 30, 1999 the loan agreement was amended to
revise the borrowing limit of Tranche B to $25,000,000 and reduce the limit of
Tranche A to a similar amount. This enabled the Company to borrow an additional
$5,000,000 as of July 30, 1999. The due date of Tranche B was extended from
January 31, 2001 to July 31, 2001. In addition, the date of the borrowing base
and collateral value redetermination scheduled to occur on July 31, 1999 was
deferred until December 31, 1999.

SEASONALITY

  The results of operations of the Company are somewhat seasonal due to
fluctuations in the price for crude oil and natural gas.  Recently, crude oil
prices have been generally higher in the third calendar quarter, and natural gas
prices have been generally higher in the first calendar quarter.  Due to these
seasonal fluctuations, results of operations for individual quarterly periods
may not be indicative of results, which may be realized on an annual basis.

                                                                              19
<PAGE>

INFLATION AND PRICES

     In recent years, inflation has not had a significant impact on the
operations or financial condition of the Company. The generally downward
pressure on oil and gas prices during most of such periods has been accompanied
by a corresponding downward pressure on costs incurred to acquire, develop, and
operate oil and gas properties as well as the costs of drilling and completing
wells on properties.

     Prices obtained for oil and gas production depend upon numerous factors
that are beyond the control of the Company including the extent of domestic and
foreign production, imports of foreign oil, market demand, domestic and world-
wide economic and political conditions, and government regulations and tax laws.
Prices for oil and gas have fluctuated significantly in recent years.

     The following table sets forth the average price received by the Company.

                                                     Oil          Gas
                                                  ---------    ----------
     Year ended April 30, 1999                      $13.20        $1.79
     Year ended April 30, 1998                      $15.75        $2.36
     Nine months ended April 30, 1997               $15.34        $1.70

     On October 31, 1998, the Company's commodity price hedge agreements
expired.  During February 1999 the Company completed a transaction to hedge
approximately 65% of its existing monthly gas production by installing a floor
of $1.60/MMBTU and a cap of $2.07/MMBTU.  This will protect the Company from any
severe declines in natural gas prices over the next six months and conversely
limit the benefit of prices in excess of the cap.  During April 1999 the Company
completed a transaction to hedge approximately 40% of its existing monthly oil
production by installing a floor of $12.00/barrel.  This will protect the
Company from any severe declines in oil prices over the next six months.

ISSUES RELATED TO THE YEAR 2000

GENERAL

     The following Year 2000 statements constitute a Year 2000 Readiness
Disclosure within the meaning of the Year 2000 Information and Readiness
Disclosure Act of 1998. The Year 2000 problem has arisen because many existing
computer programs use only the last two digits to refer to a year. Therefore,
these computer programs do not properly recognize and process date-sensitive
information beyond 1999. In general, there are two areas where Year 2000
problems may exist for the Company: information technology such as computers,
programs and related systems ("IT") and non-information technology systems such
as embedded technology on a silicon chip ("Non IT").

THE PLAN

     Alliance's Year 2000 Plan (the "Plan") has four phases: (i) assessment,
(ii) inventory, (iii) remediation, testing and implementation and (iv)
contingency plans. Approximately twelve months ago, the Company began its phase
one assessment of its particular exposure to problems that might arise as a
result of the new millennium. The assessment and inventory phases have been
substantially completed and have identified Alliance's IT systems that must be
updated or replaced in order to be Year 2000 compliant. Remediation, testing and
implementation are scheduled to be completed by September 30, 1999, and the
contingency plan phase of the Plan is scheduled to be completed by October 31,
1999.  Alliance's assessment of the readiness of third parties whose IT systems
might have an impact on Alliance's business has thus far not indicated any
material problems.

                                                                              20
<PAGE>

     With regard to Alliance's Non IT systems, the Company believes that most of
these systems can be brought into compliance on schedule. Alliance's assessment
of third party readiness is not yet completed. Because the potential problem
with Non IT systems involves embedded chips, it is difficult to determine with
complete accuracy where all such systems are located. As part of its Plan, the
Company is making formal and informal inquiries of its vendors, customers and
transporters in an effort to determine the third party systems that might have
embedded technology requiring remediation.

ESTIMATED COSTS

     Although it is difficult to estimate the total costs of implementing the
Plan through January 1, 2000 and beyond, Alliance's preliminary estimate is that
such costs will not be material. To date, the Company has determined that its IT
systems are either compliant or can be made compliant for less than $50,000.
However, although management believes that its estimates are reasonable, there
can be no assurance, for the reasons stated in the next paragraph, that the
actual cost of implementing the Plan would not differ materially from the
estimated costs.

POTENTIAL RISKS

     The failure to correct a material Year 2000 problem could result in an
interruption in, or a failure of, certain normal business activities or
operations. This risk exists both as to Alliance's IT and Non IT systems, as
well as to the systems of third parties. Such failures could materially and
adversely affect Alliance's results of operations, cash flow and financial
condition. Due to the general uncertainty inherent in the Year 2000 problem,
resulting in part from the uncertainty of the Year 2000 readiness of third party
suppliers, vendors and transporters, the Company is unable to determine at this
time whether the consequences of Year 2000 failures will have a material impact
on Alliance's results of operations, cash flow or financial condition. Although
the Company is not currently able to determine the consequences of Year 2000
failures, its current assessment is that its area of greatest potential risk in
its third party relationships is in connection with the transporting and
marketing of the oil and gas produced by the Company. The Company is contacting
the various purchasers and pipelines with which it regularly does business to
determine their state of readiness for the Year 2000. Although the purchasers
and pipelines will not guaranty their state of readiness, the responses received
to date have indicated no material problems. The Company believes that in a
worst case scenario, the failure of its purchasers and transporters to conduct
business in a normal fashion could have a material adverse effect on cash flow
for a period of six to nine months. Alliance's Year 2000 Plan is expected to
significantly reduce Alliance's level of uncertainty about the compliance and
readiness of these material third parties. The evaluation of third party
readiness will be followed by Alliance's development of contingency plans.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

     In addition, the dates for completion of the phases of the Year 2000 Plan
are based on Alliance's best estimates, which were derived using numerous
assumptions of future events. Due to the general uncertainty inherent in the
Year 2000 problem, resulting in part from the uncertainty of the Year 2000
readiness of third-parties and the interconnection of computer systems, the
Company cannot ensure its ability to timely and cost-effectively resolve
problems associated with the Year 2000 issue that may affect its operations and
business. Accordingly, shareholders and potential investors are cautioned that
certain events or circumstances could cause actual results to differ materially
from those projected, estimated or predicted.

QUANTITATIVE AND QUALITATIVE ANALYSIS ON MARKET RISK

     The Company's primary market risks relate to changes in interest rates and
in the prices received from sales of oil and natural gas. The Company's primary
risk management strategy is to partially mitigate the risk of adverse changes in
its cash flows caused by increases in interest rates on its variable rate debt,
and decreases in oil and natural

                                                                              21
<PAGE>

gas prices, by entering into derivative financial and commodity instruments,
including swaps, collars and participating commodity hedges. By hedging only a
portion of its market risk exposures, the Company is able to participate in the
increased earnings and cash flows associated with decreases in interest rates
and increases in oil and natural gas prices; however, it is exposed to risk on
the unhedged portion of its variable rate debt and oil and natural gas
production.

  Historically, the Company has attempted to hedge the exposure related to its
variable rate debt and its forecasted oil and natural gas production in amounts
which it believes are prudent based on the prices of available derivatives and,
in the case of production hedges, the Company's deliverable volumes.  The
Company attempts to manage the exposure to adverse changes in the fair value of
its fixed rate debt agreements by issuing fixed rate debt only when business
conditions and market conditions are favorable.

  The Company does not use or hold derivative instruments for trading purposes
nor does it use derivative instruments with leveraged features.  The Company's
derivative instruments are designated and effective as hedges against its
identified risks, and do not of themselves expose the Company to market risk
because any adverse change in the cash flows associated with the derivative
instrument is accompanied by an offsetting change in the cash flows of the
hedged transaction.

  Personnel who have appropriate skills, experience and supervision carry out
all derivative activity.  The personnel involved in derivative activity must
follow prescribed trading limits and parameters that are regularly reviewed by
senior management.  The Company uses only well-known, conventional derivative
instruments and attempts to manage its credit risk by entering into financial
contracts with reputable financial institutions.

  Following are disclosures regarding the Company's market risk sensitive
instruments by major category.  Investors and other users are cautioned to avoid
simplistic use of these disclosures.  Users should realize that the actual
impact of future interest rate and commodity price movements will likely differ
from the amounts disclosed below due to ongoing changes in risk exposure levels
and concurrent adjustments to hedging positions.  It is not possible to
accurately predict future movements in interest rates and oil and natural gas
prices.

  Interest Rate Risks (non-trading) - the Company uses both fixed and variable
rate debts to partially finance operations and capital expenditures.  As of
April 30, 1999, the Company's debt consists of $39,830,348 in borrowings under
its Credit Agreement which bear interest at a variable rate, and $10,243,775 in
borrowings under its 10% Senior Subordinated Notes which bear interest at a
fixed rate.  The Company hedges a portion of the risk associated with its
variable rate debt through derivative instruments which consist of interest rate
swaps and collars.  Under the swap contracts, the Company makes interest
payments on its Credit Agreement as scheduled and receives or makes payments
based on the differential between the fixed rate of the swap and a floating rate
plus a defined differential. These instruments reduce the Company's exposure to
increases in interest rates on the hedged portion of its debt by enabling it to
effectively pay a fixed rate of interest or a rate, which only fluctuates within
a predetermined ceiling and floor.  A hypothetical increase in interest rates of
two percentage points would cause a loss in income and cash flows of $800,000
during 1999, assuming that outstanding borrowings under the Credit Agreement
remain at current levels.  This loss in income and cash flows would be offset by
a $0 increase in income and cash flows associated with the interest rate swap
and collar agreements that are in effect for 1999.  A hypothetical decrease in
interest rates of two percentage points would cause an increase in the fair
value of $0 in the Company's Senior Subordinated Notes from their fair value at
April 30, 1999.

  Commodity Price Risk (non trading) - The Company hedges a portion of the price
risk associated with the sale of its oil and natural gas production through the
use of derivative commodity instruments, which consist of collars and
participating hedges.  These instruments reduce the Company's exposure to
decreases in oil and natural gas prices on the hedged portion of its production
by enabling it to effectively receive a fixed price on its oil and natural gas
sales or a price that only fluctuates between a predetermined floor and ceiling.
As of July 1, 1999, the Company had entered into derivative commodity hedges
covering an aggregate of 40,000 barrels of oil and 320,000 MMbtu's of

                                                                              22
<PAGE>

gas that extend through October 1999. Under these contracts, the Company sells
its oil and natural gas production at spot market prices and receives or makes
payments based on the differential between the contract price and a floating
price which is based on spot market indices. The amount received or paid upon
settlement of these contracts is recognized as oil or natural gas revenues at
the time the hedged volumes are sold. A hypothetical decrease in oil and natural
gas prices of 10% from the price in effect as of April 30, 1999, would cause a
loss in income and cash flows of $383,250 during 1999, assuming that oil and gas
production remain at current levels. This loss in income and cash flows would be
offset by a $0 increase in income and cash flows associated with the oil and
natural gas derivative contracts that are in effect.

Item 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

                                                                            Page
                                                                            ----

Independent Auditors' Report..............................................   F-2

Consolidated Balance Sheets...............................................   F-3

Consolidated Statements of Operations.....................................   F-5

Consolidated Statements of Changes in Stockholders' Equity................   F-6

Consolidated Statements of Cash Flows.....................................   F-7

Notes to the Consolidated Financial Statements............................   F-8

ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
         FINANCIAL DISCLOSURE

                                Not Applicable

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

         John A. "Jak" Keenan, aged 45, is the Chairman and Managing Director
of Alliance.  He has worked in the oil industry since 1976 and was successively
first vice president of corporate development, chief operating officer and
director and president of the oil and gas division of Great Western Resources,
Inc.  He resigned his position at Great Western Resources, Inc. in August 1995
and accepted a position at the law firm of Jenkens & Gilchrist in Houston,
Texas, where he specialized in oil and gas transactions.  He joined the Board of
Alliance in April 1996.

         Michael E. Humphries, aged 42, is the Interim Finance Director of
Alliance.  Having begun his career at Britoil Plc, he has spent 16 years working
in the international oil and gas arena and is currently Senior Vice President of
Rothschild Natural Resources, LLC, based in Washington DC, where he has
responsibility for Rothschild's oil and gas activities in North America.  He
joined the Board of Alliance in December 1997.

         Paul R. Fenemore, aged 43, is the Operations and Business Development
Director of Alliance.  He has a B.Sc. degree in combined science obtained in
1975 and a M.Sc. degree in marine geotechnics.  He has extensive experience in
detailed technical and economic evaluations of exploration and oil field
appraisal and development projects and project management and has held several
technical and senior management positions with Gulf Oil Corporation, Amoco
Europe and West Africa Limited, Amerada-Hess UK Limited, Hamilton Brothers (UK)
Limited, CSX Oil and Gas Corporation, Cairn Energy PLC and Hunting Surveys
Limited.  From 1991 until 1995, he was managing director of Petroleum Ventures
International and Spectron Petroleum Limited and became a fellow of the
Geological Society in 1992.  He joined the Board of Alliance in May 1996.

                                                                              23
<PAGE>

     Phillip Douglas, aged 60, is a non-executive Director of Alliance.  He was
a director and head of international investment at Morgan Grenfell for 16 years
and was a director of G T Management.  He also has a number of other non-
executive directorships in public and private companies.  He joined the Board of
Alliance in November 1993.

     William J. A. Kennedy, aged 60, is a non-executive Director of Alliance.
After 25 years experience in the investment industry, he became vice president
of a major conglomerate, Crownx, Inc.  For the past nine years, he has operated
a management consulting service and sits on the board of two public Canadian
companies.  He joined the Board of Alliance in January 1994.

     John R. Martinson, aged 63, is a non-executive Director of Alliance. He has
a B.Sc. degree in engineering and a masters degree in business administration.
He became a director of LaTex in May 1995, having served as a consultant to that
company since 1994. He is Managing Director of Wood Roberts, LLC, where he has
been engaged in financial consulting since January 1989. From 1973 to 1988, Mr.
Martinson was an independent oil and gas entrepreneur. Previously, he was with
Kidder Peabody & Co., Oppenheimer & Co. and Mobil Corporation. He joined the
Board of Alliance in May 1997.

Other Key Employees and their Business Histories

     In addition to the Executive Directors, the Company employs two senior
executives.  The names, current ages and positions of these other key employees
are as follows:


        Name                    Age                Position
        ----                    ---                --------

Francis M. Munchinski            45                General Counsel

Robert E. Schulte                41                Controller


     Francis M. Munchinski is the General Counsel of Alliance.  He is a U.S.
citizen and a doctor of law.  Prior to joining the Company in June 1998, he was
a shareholder at the law firm of Jenkens & Gilchrist in Dallas, Texas where he
specialized in oil and gas law for over 13 years.  Mr. Munchinski has been
involved in the oil and gas business for over 18 years.

     Robert E. Schulte is the Controller of Alliance.  He is a U.S. citizen and
has a B.S. degree in accounting.  He has worked in the oil and gas industry
since 1981 in both domestic and international arenas.  He has held management
positions with Bow Valley Petroleum, Kelt Energy, Great Western Resources and
Apache Corporation before joining Alliance in September 1997.

ITEM 11.  EXECUTIVE COMPENSATION

     The following table sets forth certain information regarding compensation
paid or accrued during each of the Company's last three fiscal years to the
Company's Managing Director, John A. Keenan and each of the other most highly
compensated executive officers who earned at least $100,000 in salary and bonus
in fiscal 1999 (the "Named Executives"):

                                                                              24
<PAGE>

                          Summary Compensation Table

<TABLE>
<CAPTION>
                                                                                        Long Term
                                                        Annual Compensation            Compensation
                                                   -----------------------------  ----------------------
                                                                                        Securities
                                                                                        Underlying              All Other
Name and Principal Position         Fiscal Year      Salary ($)      Bonus ($)       Options/SARs (#)        Compensation ($)
- --------------------------------  ---------------  --------------  -------------  ----------------------  ----------------------
<S>                               <C>              <C>             <C>            <C>                     <C>
John A. Keenan..................        1999              162,000         75,000                 890,000                  22,500
    Managing Director(1)                1998              174,500         30,000                 400,000                 107,103
                                        1997              150,333             --                 150,000                   5,061
Paul R. Fenemore................        1999              172,000         45,000                 670,000                  10,000
    Operations and Business             1998              164,990         20,000                 200,000                   8,361
    Development Director(2)             1997              142,789             --                  25,000                      --
Francis M. Munchinski...........        1999               75,833         42,000                 520,000                   8,526
    General Counsel(3)                  1998                   --             --                      --                      --
                                        1997                   --             --                      --                      --
Robert E. Schulte...............        1999               82,083         42,000                 285,000                  10,321
    Controller(4)                       1998               45,569          4,000                  25,000                   4,208
                                        1997                   --             --                      --                      --
</TABLE>

(1)  Mr. Keenan assumed his position with Alliance on May 22, 1996.  Amounts
     shown under All Other Compensation in 1999 represent pension and benefits.
     Amounts shown under All Other Compensation in 1998 represent relocation
     expenses.

(2)  Mr. Fenemore assumed his position with Alliance on May 21, 1996.  Amounts
     shown under All Other Compensation in 1999 represent pension.

(3)  Mr. Munchinski assumed his position with Alliance on June 16, 1998.
     Amounts shown under All Other Compensation in 1999 represent relocation
     expenses and benefits.

(4)  Mr. Schulte assumed his position with Alliance on September 17, 1997.
     Amounts shown under All Other Compensation in 1999 represent relocation
     expenses and benefits.

                                                                              25
<PAGE>

                      Options Grants in Last Fiscal Year

     The following table sets forth all individual grants of options to the
Named Executives of the Company during the fiscal year ended April 30, 1999.

<TABLE>
<CAPTION>

Individual Grants                                                                              Potential Realizable
- -----------------                                                                                Value at Assumed
                                                                                               Annual Rates of Stock
                                                                                                Price Appreciation
                                                                                                  For Option Term
                                                                                              -----------------------
                                                  % Of Total
                                  Securities       Options
                                  Underlying      Granted to     Exercise or
                                  Options        Employees in       Base       Expiration
                  Name            Granted(#)      Fiscal Year    Price(1)($)      Date           5% ($)      10% ($)
                  ----            ----------   ----------------  -----------   ----------     ----------   ----------
<S>                               <C>          <C>               <C>           <C>            <C>          <C>
John A. Keenan..................     890,000               37.6     13.5p        11/29/08     195,844.50   311,188.50
    Managing Director
Paul R. Fenemore................     670,000               28.3     13.5p        11/29/08     147,433.50   234,265.50
    Operations and Business
    Development Director
Francis M. Munchinski...........     520,000               22.0     13.5p        11/29/08     114,426.00   181,818.00
    General Counsel
Robert E. Schulte...............     285,000               12.1     13.5p        11/29/08      62,714.25    99,650.25
    Controller
</TABLE>

(1) Represents the closing mid-market price of the ordinary shares on the London
    Stock Exchange on November 27, 1998.

                         Fiscal Year End Option Values

    Shown below is information with respect to the Named Executives of the
Company regarding option exercises during the fiscal year ended April 30, 1999,
and the value of unexercised options held as of April 30, 1999.
<TABLE>
<CAPTION>

                                               Number of Securities Underlying             Value of Unexercised
                                                     Unexercised Options                       In-the-Money
                                                      at April 30, 1999                  Options at April 30, 1999
                                          --------------------------------------  -------------------------------------
                 Name                       Unexercisable        Exercisable        Unexercisable       Exercisable
                 ----                     ------------------  ------------------  -----------------  ------------------
<S>                                       <C>                 <C>                 <C>                <C>
John A. Keenan..........................           1,290,000          --                  --                 --
     Managing Director
Paul R. Fenemore........................             870,000          --                  --                 --
     Operations and Business
     Development Director
Francis M. Munchinski...................             520,000          --                  --                 --
     General Counsel
Robert E. Schulte.......................             310,000          --                  --                 --
     Controller
</TABLE>

                                                                              26
<PAGE>

Employment Agreements

  Each of Messrs. Keenan, Fenemore, Munchinski, and Schulte have entered into
Executive Service Agreements with Alliance providing for his employment in his
current capacity for an initial fixed term of two years beginning October 15,
1996, September 20, 1996, January 1, 1999 and January 1, 1999, respectively, and
having automatic extensions of the initial term for additional two-year periods
unless written notice of either party's intention not to extend has been given
to the other party at least three months prior to the expiration of the then
effective two-year period of employment, provided that the executive may at any
time terminate his employment by giving a minimum of three months notice. If the
executive's employment terminates for any reason other than the executive's
breach of the agreement, disability or malfeasance, Alliance must pay the
executive an amount equal to twice the annual salary, bonuses and benefits paid
to the executive. Upon the involuntary termination of the executive's employment
without cause or voluntary termination by the executive after a change in his
office location, his responsibilities or reduction in compensation following a
change in control of Alliance, the executive is entitled to the payment of one
lump sum of cash in an amount equal to two and a half times the annual salary,
bonus and benefits paid to the executive.

  The annual salary under each agreement is $180,000 for Mr. Keenan,
(pounds)100,000 for Mr. Fenemore, $140,000 for Mr. Munchinski and $100,000 for
Mr. Schulte, plus any bonuses or other compensation determined by Alliance's
Board of Directors in its discretion.

Compensation of Directors

  The compensation of the non-executive directors is reviewed by the Board of
Directors from time to time to ensure that this compensation is in line with
current market practice.  Under Alliance's Articles of Association, shareholders
determine the maximum aggregate amount payable by way of fees to directors and
this maximum amount is currently fixed at (Pounds)100,000 per year.  During the
twelve months ended April 30, 1999, the following directors were paid the
indicated fees for their services as directors: Mr. Douglas $16,000, Mr. Kennedy
$16,000, Mr. Samuelson $12,000, Mr. Martinson $12,000 and Mr. Humphries $12,525.

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

  The following table sets forth certain information, as of April 30, 1999, with
respect to the beneficial ownership of Shares (i) by any person or "group," as
that term is used in Section 13(d)(3) of the Securities Exchange Act of 1934,
known to the Company to own beneficially more than 5% of the outstanding Shares,
(ii) by each director, including executive directors, and each other key
employee of the Company named in the Summary Compensation Table, and (iii) by
all directors, including executive directors, and all key employees of the
Company as a group.  Except as otherwise indicated, each of the persons named
below is believed by the Company to possess sole voting and investment power
with respect to the Shares beneficially owned by such person.

<TABLE>
<CAPTION>

Name and Address of                                             Shares Owned          Percent Owned
Beneficial Owner(1)                                             Beneficially          Beneficially
- -------------------                                             ------------          -----------
<S>                                                             <C>                   <C>
John A. Keenan...........................................       1,390,000(2)                 2.6%

Paul R. Fenemore.........................................         870,000(3)                 1.7%

Francis M. Munchinski....................................         520,000(4)                 1.0%

Robert E. Schulte........................................         310,000(5)                   *

Michael E. Humphries.....................................               -                      -
</TABLE>

                                                                              27
<PAGE>

<TABLE>

<S>                                                             <C>                   <C>
William J.A. Kennedy.....................................           4,125                      *

Philip Douglas...........................................          99,583                      *

John R. Martinson........................................         778,987(6)                 1.5%

Enron Reserve Acquisition Corp. (7)......................       3,239,708                    6.2%

LaSalle Street Natural Resources Corporation(8)..........       7,179,519                   12.3%

EnCap Equity 1996 Limited Partnership(9).................      11,250,000                   21.4%

Energy Capital Investment Company PLC(10)................       3,750,000                    7.1%

EnCap Investments L.C.(11)...............................      15,545,454                   29.6%

All Directors, including executive directors, and all
 key employees of Alliance as a group
   (8 persons) (2), (3), (4), (5), (6)...................       3,972,695                    5.7%
</TABLE>
- --------------------------------
*    Less than 1%

(1)  All of the Company's directors may be contacted at 12 St. James's Square,
     London SW1Y 4RB.

(2)  Includes options to purchase 1,290,000 Shares granted pursuant to the
     Company's executive share option plans.

(3)  Consists of options to purchase 870,000 Shares granted pursuant to the
     Company's executive share option plans.

(4)  Consists of options to purchase 520,000 Shares granted pursuant to the
     Company's executive share option plans.

(5)  Consists of options to purchase 310,000 Shares granted pursuant to the
     Company's executive share option plans.

(6)  Includes presently exercisable warrants to purchase 374,877 Shares held by
     Wood Roberts, Inc., a corporation under the control of Mr. Martinson and
     presently exercisable warrants to purchase 218,334 Shares held by Wood
     Roberts, LLC, a Texas limited liability company 50% owned by Mr. Martinson.

(7)  The address of Enron Reserve Acquisition Corp. is 1400 Smith Street,
     Houston, Texas 77002.  After April 30, 1999, Enron Reserve Acquisition
     Corp. advised the Company that it sold all of its shares.

(8)  Consists of 1,500,000 Shares, convertible loan notes and immediately
     exercisable warrants convertible into or exercisable for 2,404,519 Shares
     issued to an affiliate of Bank of America and warrants to purchase
     3,275,000 Shares at a price of 1p per share.  The address of LaSalle Street
     Natural Resources  is 231 S. LaSalle Street, Chicago, Illinois  60697.

(9)  The address of EnCap Equity 1996 Limited Partnership is 1100 Louisiana,
     Suite 3150, Houston, Texas 77002.  EnCap Equity 1996 Limited Partnership
     shares voting and dispositive power with EnCap Investments L.C., its
     general partner.

                                                                              28
<PAGE>

(10) The address of Energy Capital Investment Company PLC is c/o Aberdeen Asset
     Management, 1 Bow Churchyard, Cheapside, London EC4M 9HH, England.  Energy
     Capital Investment Company PLC shares dispositive and voting power over
     these shares with EnCap Investments L.C.

(11) The address of EnCap Investments L.C. is 1100 Louisiana, Suite 3150,
     Houston, Texas 77002. EnCap Investments L.C. shares dispositive and voting
     power over 15,000,000 of these shares with EnCap Equity 1996 Limited
     Partnership and Energy Capital Investment Company PLC.

(12) In addition to the interests set out above, John A. Keenan is interested in
     45,000 Shares held in the name of Diamond Securities Limited and 102,500
     Shares held in the name of Havensworth Limited by virtue of having proxy
     over the voting rights attached to these Shares pending their sale, as
     required by a settlement of legal proceedings with the former Managing
     Director of the Company in August 1996.

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

None

                                    PART IV

ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

(a)  Financial Statements (included at Item 8.  Financial Statements and
     Supplementary Data)

(b)  Reports on Form 8-K

     No reports on Form 8-K were filed by the Company with the Securities and
     Exchange Commission during the fourth quarter of the Company's fiscal year
     ended April 30, 1999.

(c)  Exhibits.


Exhibit     Description
- -------     -----------

3.1(3)      Memorandum of Association of Alliance Resources Plc (3.1)
3.2(3)      Articles of Association of Alliance Resources Plc (3.7)
3.3(2)      Form of Warrant Agreement relating to Warrants issued to Society
            National Bank as Warrant Agent for holders of certain LaTex Warrants
            (3.3)
3.4(2)      Warrant Agreement and form of Warrant issued to all other holders of
            LaTex Warrants (3.4)
3.5(2)      Form of Convertible Loan Note Instrument entered into between
            Alliance Resources Plc and Bank of America NT & SA (3.5)
3.6(2)      Registration Rights Agreement between Alliance Resources Plc and
            affiliate of Bank of America NT & SA (3.6)
10.1(1)(2)  Executive Service Agreement between Alliance Resources Plc and John
            A. Keenan dated October 15, 1996 as amended by Supplemental
            Agreement dated April 7, 1998 and Second Supplemental Agreement
            dated as of December 1, 1998 (10.1)
10.2(1)(2)  Executive Service Agreement between Alliance Resources Plc and Paul
            R. Fenemore dated September 20, 1996 as amended by Supplemental
            Agreement dated April 16, 1998 and Second Supplemental Agreement
            dated as of December 1, 1998 (10.2)
10.3(1)     Executive Service Agreement between Alliance Resources Plc and
            Francis M. Munchinski dated as of December 1, 1998.

                                                                              29
<PAGE>

10.4(1)     Executive Service Agreement between Alliance Resources Plc and
            Robert E. Schulte dated as of December 1, 1998.
10.5(3)     Purchase Agreement dated October 27, 1998, by and between Alliance
            Resources PLC and EnCap Equity 1996 Limited Partnership and Energy
            Capital Investment Company Plc.
10.6        First Amendment to the Purchase Agreement, dated effective as of
            July 30, 1999.
10.7(3)     Registration Rights Agreement dated as of October 30, 1998 by and
            between Alliance Resources PLC, EnCap Equity 1996 Limited
            Partnership, Energy Capital Investment Company Plc and EnCap
            Investments, L.C.
10.8(3)     Third Amended and Restated Credit Agreement dated as of October 27,
            1998, among Alliance Resources PLC and certain of its subsidiaries
            and Bank of America National Trust and Savings Association.
10.9        First Amendment to the Third Amended and Restated Credit Agreement,
            dated effective as of July 30, 1999.
10.10(3)    Registration Rights Agreement dated as of October 30, 1998 between
            the Company and LaSalle Street Natural Resources Corporation.
10.11(3)    Registration Rights Agreement dated as of October 30, 1998, among
            Alliance Resources PLC and F. Fox Benton and certain members of his
            family.
10.12       Exchange and Merger Agreement by and among American Rivers Oil
            Company, a Wyoming corporation, American Rivers Oil Company, a
            Delaware corporation, and Alliance Resources Plc, dated July 22,
            1999.
22.1        Subsidiaries

- -------------

(1)  Constitutes compensation plan or arrangement
(2)  Incorporated by reference from the indicated exhibit filed with Alliance's
     Registration Statement on Form F-4 (No. 333-19013).
(3)  Incorporated by reference from the indicated exhibit filed with Alliance's
     Form 8-K filed November 16, 1998.


                              SIGNATURES


  Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the Registrant has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized.

                                             Alliance Resources PLC

Date:  August 12, 1999                       /s/ John A. Keenan
                                             ---------------------
                                             John A. Keenan, Chairman
                                             and Managing Director

Pursuant to the requirements of the Securities Act of 1934, this Report has been
signed below by the following persons on behalf of the Registrant and in the
capacities and on the dates indicated:

       Signature                          Title                      Date
       ---------                          -----                      ----

/s/ John A. Keenan         Chairman and Managing Director       August 12, 1999
- -------------------------
John A. Keenan


/s/ Paul R Fenemore        Operations and Business Development  August 12, 1999
- -------------------------  Director
Paul R Fenemore


                                                                              30
<PAGE>

/s/ Phillip Douglas        Director                             August 12, 1999
- -------------------------
Phillip Douglas


/s/ William J A Kennedy    Director                             August 12, 1999
- -------------------------
William J A Kennedy


/s/ Michael E Humphries    Director                             August 12, 1999
- -------------------------
Michael E Humphries


/s/ John R Martinson       Director                             August 12, 1999
- -------------------------
John R Martinson

                                                                              31
<PAGE>

                         INDEX TO FINANCIAL STATEMENTS


                                                                            Page
                                                                            ----

Independent Auditors' Report..............................................   F-2

Consolidated Balance Sheets...............................................   F-3

Consolidated Statements of Operations.....................................   F-5

Consolidated Statements of Changes in Stockholders' Equity................   F-6

Consolidated Statements of Cash Flows.....................................   F-7

Notes to the Consolidated Financial Statements............................   F-8






















                                                                             F-1
<PAGE>

                         Independent Auditors' Report



Board of Directors
Alliance Resources PLC and Subsidiaries


We have audited the consolidated balance sheets of Alliance Resources PLC and
subsidiaries as of April 30, 1998 and 1999 and the related consolidated
statements of operations, stockholders' equity, and cash flows for the nine
months ended April 30, 1997 and the years ended April 30, 1998 and 1999.  These
consolidated financial statements are the responsibility of the Company's
management.  Our responsibility is to express an opinion on these consolidated
financial statements based on our audits.

We conducted our audits in accordance with generally accepted auditing standards
in the United States.  Those standards require that we plan and perform the
audit to obtain reasonable assurance about whether the financial statements are
free of material misstatement.  An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.  An
audit also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation.  We believe that our audits provide a reasonable basis
for our opinion.

In our opinion, the consolidated financial statements referred to above present
fairly, in all material respects, the consolidated financial position of
Alliance Resources PLC and subsidiaries as of April 30, 1998 and 1999, and the
results of their operations and their cash flows for the nine months ended April
30, 1997 and the years ended April 30, 1998 and 1999, in conformity with
generally accepted accounting principles in the United States.

The accompanying financial statements have been prepared assuming the Company
will continue as a going concern.  As discussed in Note 1 to the consolidated
financial statements, the Company has suffered recurring losses from operations,
has a net capital deficiency and is obliged to commence repayments on its
borrowings on October 30, 2000. These matters raise substantial doubt about the
Company's ability to continue as a going concern.  Management's plans in regard
to these matters are also described in Note 1.  The consolidated financial
statements do not include any adjustments that might result from the outcome of
this uncertainty.

                                                        KPMG Audit Plc
London, United Kingdom
August 12, 1999

                                                                             F-2
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES
                          Consolidated Balance Sheets
                            April 30, 1998 and 1999


<TABLE>
<CAPTION>
                         Assets                                           1998                    1999
                         ------                                       ------------            ------------
<S>                                                                   <C>                    <C>
Current assets:
  Cash                                                                $    408,439            $    286,158
  Accounts receivable                                                    2,132,654               2,105,082
  Other current assets                                                      73,977                  59,837
                                                                      ------------            ------------

     Total current assets                                                2,615,070               2,451,077
                                                                      ------------            ------------

Property and equipment, at cost
  Oil and gas properties, full cost method:
           United States                                                43,200,388              42,901,608
           United Kingdom                                                        -              31,054,083
  Other depreciable assets                                               1,029,118               1,095,147
                                                                      ------------            ------------
                                                                        44,229,506              75,050,838
  Less accumulated depreciation, depletion, and                        (14,421,400)            (44,695,726)
   impairments                                                        ------------            ------------

     Net property, plant and equipment                                  29,808,106              30,355,112
                                                                      ------------            ------------

Other assets:
  Deposits and other assets                                                144,989                 141,422
  Deferred acquisition costs                                               970,305                       -
  Deferred loan costs, less accumulated amortization                     1,221,650               3,215,384
                                                                      ------------            ------------
                                                                      $ 34,760,120            $ 36,162,995
                                                                      ============            ============
</TABLE>


         See accompanying notes to consolidated financial statements.

                                                                             F-3
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES
                          Consolidated Balance Sheets
                            April 30, 1998 and 1999
                                  (continued)

<TABLE>
<CAPTION>
                    Liabilities and Stockholders' Equity                                         1998                    1999
                    ------------------------------------                                     ------------            ------------
<S>                                                                                         <C>                     <C>
Current liabilities:
    Accounts payable - trade                                                                 $  8,972,704            $  7,238,502
    Accrued expenses payable                                                                      847,190                 833,750
    Current portion of long-term debt                                                           2,275,000                       -
                                                                                             ------------            ------------

          Total current liabilities                                                            12,094,894               8,072,252

Long-term liabilities:
        Long-term debt, less current portion                                                   18,791,762              43,176,621
        Other liabilities                                                                         139,626                       -
        Convertible subordinated unsecured loan notes                                           1,550,700               1,550,700
                                                                                             ------------            ------------

            Total liabilities                                                                  32,576,982              52,799,573
                                                                                             ------------            ------------
Stockholders' equity:
        Ordinary Shares-par value 40 pence;
            46,000,000 shares authorized; 31,209,408 issued and outstanding
            at April 30, 1998                                                                  20,114,634                       -
        Ordinary Shares - par value 1 pence;
            415,001,376 authorized; 47,487,142 issued and outstanding
            at April 30, 1999                                                                           -                 768,823
        Deferred Shares - par value 1 pence;
            1,414,998,624 authorized; 1,217,155,912 issued and
            outstanding at April 30, 1999                                                               -              19,611,767
        Convertible Shares - par value 1 pence;
             10,000,000 authorized; 10,000,000 issued and outstanding
             at April 30, 1999                                                                          -                 278,000

        Additional paid-in capital                                                              5,911,050              21,042,094
        Accumulated other comprehensive income(loss)                                               13,823                 (17,391)
        Accumulated deficit                                                                   (23,856,369)            (58,319,871)
                                                                                             ------------            ------------

             Total stockholders' equity(deficit)                                                2,183,138             (16,636,578)
                                                                                             ------------            ------------

Commitments (Note 13)

                                                                                             $ 34,760,120            $ 36,162,995
                                                                                             ============            ============
</TABLE>
         See accompanying notes to consolidated financial statements.

                                                                             F-4
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES
                     Consolidated Statements of Operations
                       Nine Months Ended April 30, 1997
                    and Years Ended April 30, 1998 and 1999

<TABLE>
<CAPTION>

                                                          Nine months
                                                             ended               Year ended                 Year ended
                                                         April 30, 1997         April 30, 1998             April 30, 1999
                                                         --------------         --------------             --------------
<S>                                                      <C>                    <C>                        <C>
Revenues
  Oil and gas revenue                                       $ 5,698,490            $10,209,881               $  6,234,477
  Crude oil and gas marketing                                   146,381                      -                          -
                                                            -----------            -----------               ------------

     Total revenues                                           5,844,871             10,209,881                  6,234,477
                                                            -----------            -----------               ------------

Operating expenses
  Lease operating expenses                                    3,117,341              5,505,826                  3,096,468
  Cost of crude oil and gas marketing                            15,798                      -                          -
  General and administrative expenses                         3,481,003              3,363,885                  3,486,007
  Depreciation, depletion, and amortization                   1,541,415              2,598,066                  1,670,711
  Impairment of oil and gas properties                                -                      -                 28,260,037
  Loss on termination of derivative contracts                         -              1,128,000                          -
                                                            -----------            -----------               ------------

     Total operating expenses                                 8,155,557             12,595,777                 36,513,223
                                                            -----------            -----------               ------------

                        Loss from operations                 (2,310,686)            (2,385,896)               (30,278,746)
                                                            -----------            -----------               ------------

Other income (expense):
  Write-off of deferred loan costs                                    -                      -                   (869,906)
  Interest expense                                           (2,102,933)            (2,573,646)                (3,354,627)
  Interest income                                                52,038                 62,226                     26,299
  Miscellaneous income (expense)                               ( 27,752)               132,951                     22,662
  Gain (loss) on sale of assets                                       -                 35,442                     (9,184)
                                                            -----------            -----------               ------------

     Total other income (expense)                            (2,078,647)            (2,343,027)                (4,184,756)
                                                            -----------            -----------               ------------

                        Net loss                             (4,389,333)            (4,728,923)               (34,463,502)

Preferred stock dividends                                      (517,613)                     -                          -
                                                            -----------            -----------               ------------

                        Net loss for ordinary
                         shareholders                       $(4,906,946)           $(4,728,923)              $(34,463,502)
                                                            ===========            ===========               ============

Basic loss per ordinary share                               $     (0.30)           $     (0.15)              $      (0.82)
                                                            ===========            ===========               ============

Weighted average number of shares outstanding                16,585,113             31,125,689                 41,935,718
                                                            ===========            ===========               ============
</TABLE>


         See accompanying notes to consolidated financial statements.

                                                                             F-5
<PAGE>

                     Alliance Resources PLC and Subsidiaries
                    Consolidated Statements of Stockholders'
                   Equity (Deficit) and Comprehensive Income
                        Nine Months Ended April 30, 1997
                    and Years Ended April 30, 1998 and 1999
<TABLE>
<CAPTION>
                                                                                                                       Additional
                                                          Preferred       Ordinary         Deferred     Convertible      Paid-in
                                                            Stock          Shares           Shares        Shares         Capital
                                                        ------------    ------------    ------------   ------------   -------------
<S>                                                     <C>             <C>             <C>            <C>            <C>
Balance at July 31, 1996                                $  2,680,411    $ 10,681,373    $         --   $         --   $  5,193,888
      Issuance of 85,986 shares for services                      --          55,857              --             --         44,143
      Issuance of 1,453,079 shares for
          employee bonuses                                        --         943,920              --             --       (415,795)
      Issuance of 51,735 shares for dividends                190,703              --              --             --        326,910
      Net loss                                                    --              --              --             --             --
                                                        ------------    ------------    ------------   ------------   ------------

Balance at April 30, 1997                                  2,871,114      11,681,150              --             --      5,149,146
      Issuance of 4,419,818 shares for
          preferred shares                                (2,871,114)      2,871,114              --             --             --
      Issuance of 8,103,816 shares to Alliance
          shareholders                                            --       5,105,550              --             --     (1,066,211)
      Issuance of 1,343,750 shares for acquisition
          of overriding royalty interest                          --         872,900              --             --      1,498,400
      Issuance of 256,250 shares for settlement
          of various advisory and banking fees                    --         165,904              --             --        187,096
      Issuance of 56,805 shares for warrants                      --          37,148              --             --         12,852
      Cancellation of 953,099 treasury shares                     --        (619,132)             --             --        129,767
      Comprehensive income:
          Foreign exchange adjustment                             --              --              --             --             --
          Net loss                                                --              --              --             --             --

             Total comprehensive loss
                                                        ------------    ------------    ------------   ------------   ------------

Balance at April 30, 1998                                         --      20,114,634              --             --      5,911,050
      Capital reorganization                                      --     (19,611,767)     19,611,767             --             --
      Issuance of 10,000,000 shares for Difco Limited             --              --              --        278,000      6,930,000
      Issuance of 15,545,454 shares to lender                     --         254,000              --             --      6,398,000
      Warrants issued to principal lender                         --              --              --             --      1,335,000
      Issuance of 732,280 shares for services                     --          11,956              --             --        468,044
      Comprehensive income:
          Foreign exchange adjustment                             --              --              --             --             --
          Net loss                                                --              --              --             --             --
             Total comprehensive loss
                                                        ------------    ------------    ------------   ------------   ------------

Balance at April 30, 1999                               $         --    $    768,823    $ 19,611,767   $    278,000   $ 21,042,094
                                                        ------------    ------------    ------------   ------------   ------------

<CAPTION>
                                                         Accumulated
                                                           Other
                                                        Comprehensive    Accumulated      Treasury
                                                        Income (Loss)      Deficit          Stock           Total
                                                        -------------   -------------   ------------    ------------
<S>                                                     <C>             <C>             <C>             <C>
Balance at July 31, 1996                                $         --    $(14,220,500)   $   (489,365)   $  3,845,807
      Issuance of 85,986 shares for services                      --              --              --         100,000
      Issuance of 1,453,079 shares for
          employee bonuses                                        --              --              --         528,125
      Issuance of 51,735 shares for dividends                     --        (517,613)             --              --
      Net loss                                                    --      (4,389,333)             --      (4,389,333)
                                                        ------------    ------------    ------------    ------------

Balance at April 30, 1997                                         --     (19,127,446)       (489,365)         84,599
      Issuance of 4,419,818 shares for
          preferred shares                                        --              --              --              --
      Issuance of 8,103,816 shares to Alliance
          shareholders                                            --              --              --       4,039,339
      Issuance of 1,343,750 shares for acquisition
          of overriding royalty interest                          --              --              --       2,371,300
      Issuance of 256,250 shares for settlement
          of various advisory and banking fees                    --              --              --         353,000
      Issuance of 56,805 shares for warrants                      --              --              --          50,000
      Cancellation of 953,099 treasury shares                     --              --         489,365              --
      Comprehensive income:
          Foreign exchange adjustment                         13,823              --              --          13,823
          Net loss                                                --      (4,728,923)             --      (4,728,923)
                                                                                                        ------------
             Total comprehensive loss                                                                     (4,715,100)
                                                        ------------    ------------    ------------    ------------

Balance at April 30, 1998                                     13,823     (23,856,369)             --       2,183,138
      Capital reorganization                                      --              --              --              --
      Issuance of 10,000,000 shares for Difco Limited             --              --              --       7,208,000
      Issuance of 15,545,454 shares to lender                     --              --              --       6,652,000
      Warrants issued to principal lender                         --              --              --       1,335,000
      Issuance of 732,280 shares for services                     --              --              --         480,000
      Comprehensive income:
          Foreign exchange adjustment                        (31,214)             --              --         (31,214)
          Net loss                                                --     (34,463,502)             --     (34,463,502)
                                                                                                        ------------
             Total comprehensive loss                                                                    (34,494,716)
                                                        ------------    ------------    ------------    ------------

Balance at April 30, 1999                               $    (17,391)   $(58,319,871)   $         --    $(16,636,578)
                                                        ------------    ------------    ------------    ------------
</TABLE>

          See accompanying notes to consolidated financial statements.

                                       F-6
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES
                     Consolidated Statements of Cash Flows
                       Nine Months Ended April 30, 1997
                    and Years Ended April 30, 1998 and 1999

<TABLE>
<CAPTION>
                                                                         Nine months
                                                                            ended               Year ended           Year ended
                                                                          April 30,              April 30,            April 30,
                                                                            1997                   1998                 1999
                                                                         -----------           -----------          ------------
<S>                                                                     <C>                    <C>                  <C>
Cash flows from operating activities:
 Net loss                                                                $(4,389,333)          $(4,728,923)         $(34,463,502)
 Adjustments to reconcile net loss to net
   cash provided by (used in) operating activities:
     Depreciation, depletion and amortization                              1,541,415             2,598,066             1,670,711
     Write-off of deferred loan costs                                              -                     -               869,906
     Impairment of oil and gas properties                                          -                     -            28,260,037
     Other amortization                                                      394,000               813,096             1,289,493
     Employee bonus                                                          528,125                     -                     -
     (Gain)loss on sale of assets                                                  -               (35,442)                9,184
     Changes in assets and liabilities, net of
       effects from acquisition:
       Accounts receivable                                                 1,204,903               487,427                27,572
       Due from related parties                                              392,297                     -                     -
       Other assets                                                          161,530                97,500                17,707
       Accounts payable                                                    2,239,165            (4,032,763)           (1,519,293)
       Accrued expenses payable                                             (169,319)              409,454               (13,440)
       Other liabilities                                                     195,783              (792,554)             (139,626)
                                                                         -----------           -----------          ------------
          Net cash provided by (used in) operating                         2,098,566            (5,184,139)           (3,991,251)
           activities                                                    -----------           -----------          ------------

Cash flows from investing activities:
 Proceeds from sale of property and equipment                              1,573,625             5,729,300             1,742,336
 Purchases of property and equipment, including                             (350,322)           (2,407,162)           (3,829,425)
  interest capitalized
 Acquisition of Difco                                                              -              (221,987)          (22,087,667)
 Decrease in accounts and notes receivable-other                           1,273,320                     -                     -
 Effect of LaTex acquisition                                                       -               (15,181)                    -
                                                                         -----------           -----------          ------------
   Net cash provided by (used in) investing activities                   $ 2,496,623           $ 3,084,970          $(24,174,756)
                                                                         -----------           -----------          ------------
Cash flows from financing activities:
 Deferred loan and reorganization costs                                  $  (401,208)          $  (385,680)         $ (1,213,635)
 Proceeds from issuance of long-term debt                                          -             2,770,340            45,464,123
 Exercise of warrants                                                              -                50,000                     -
 Payments of long-term debt                                               (4,140,370)                    -           (22,566,762)
 Proceeds from issuance of stock                                                   -                     -             6,360,000
                                                                         -----------           -----------          ------------
       Net cash provided by (used in) financing activities                (4,541,578)            2,434,660            28,043,726
                                                                         -----------           -----------          ------------
          Net increase (decrease) in cash                                     53,611               335,491              (122,281)
Cash at beginning of period                                                   19,337                72,948               408,439
                                                                         -----------           -----------          ------------
Cash at end of period                                                    $    72,948           $   408,439          $    286,158
                                                                         ===========           ===========          ============

Supplemental disclosures of cash flow information-
 Cash paid during the period for interest                                $ 1,623,985           $ 1,634,360          $  2,910,000
                                                                         ===========           ===========          ============
Supplemental disclosure of noncash investing and
 financing activities:
     Common stock issued for services and bonus                          $   100,000           $   353,000          $    772,000
     Shares issued for employee bonus                                        462,500                     -                     -
     Issuance of convertible loan notes                                            -               150,000                     -
     Common stock issued on acquisition of LaTex                                   -             4,039,339                     -
     Common stock issued for overriding royalty                                    -             2,371,300                     -
     Convertible loan notes issued for overriding royalty                          -             1,400,700                     -
     Convertible shares issued to Difco shareholders                               -                     -             7,208,000
     Overriding royalty interest conveyed to bank                                  -                     -            (2,100,000)
</TABLE>

         See accompanying notes to consolidated financial statements.


                                                                             F-7
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued


(1)  Organization and Summary of Significant Accounting Policies

     Organization and basis of presentation

     Alliance Resources PLC ("Alliance" or "the Company") and its subsidiaries
     are engaged in the exploration, development and production of oil and gas
     and, until April 30, 1997, oil and gas marketing.  Oil and gas production
     operations are currently conducted principally in Oklahoma, Texas,
     Louisiana, Mississippi and Alabama.  The Company acquired proved
     undeveloped oil and gas interests in the East Irish Sea effective October
     30, 1998 (See Note 2).  Included in oil and gas revenue are sales from 10
     significant producing properties which aggregated approximately $2,700,000,
     $2,210,000, and $2,155,000 for the nine months ended April 30, 1997, and
     years ended April 30, 1998 and 1999, respectively.

     Alliance is a London-based public limited company organized under the laws
     of England and Wales and its shares are listed on the London Stock
     Exchange.  The Company prepares its statutory financial statements in
     accordance with U.K. law and U.K. generally accepted accounting principles.
     These financial statements are prepared in accordance with generally
     accepted accounting principles in the United States.

     On May 1, 1997, Alliance completed its acquisition of LaTex Resources, Inc.
     ("LaTex"), a US independent oil and gas exploration and production company.
     As the LaTex shareholders had a controlling interest in the combined group,
     LaTex was treated as having acquired Alliance ("Reverse Acquisition").
     Accordingly, in the consolidated financial statements for the period
     beginning May 1, 1997, the assets and liabilities of Alliance are recorded
     at fair values while the assets and liabilities of LaTex and its
     subsidiaries are recorded at their historical costs.  The consolidated
     financial statements of the Company for the nine months ended April 30,
     1997, reflect the results of operations and assets and liabilities of LaTex
     and its subsidiaries.   Adjustments have been made to reflect, in that
     period, the changes in the capital structure resulting from the
     acquisition.  Earnings per share have been restated on the basis of the
     number of Alliance shares which, based on the exchange ratio used in the
     acquisition, represents the weighted average number of LaTex common shares
     outstanding in the relevant period.

     In these financial statements the "Group" refers to Alliance and its
     subsidiaries for periods ending on or after May 1, 1997 and to LaTex
     Resources, Inc. and its subsidiaries for periods ending on or before April
     30, 1997.

     Financial Condition

     The accompanying financial statements have been prepared on a going concern
     basis, which contemplates the realization of assets and satisfaction of
     liabilities in the normal course of business.  As shown in the financial
     statements during the nine months ended April 30, 1997 and the years ended
     April 30, 1998 and 1999, the Company incurred losses of $4,389,333;
     $4,728,923; and $34,463,502, respectively, continues to experience working
     capital deficits and is obliged to commence repayments on the borrowings on
     October 30, 2000.  These factors among others may indicate the Company will
     be unable to continue as a going concern for a reasonable period of time.

     The financial statements do not include any adjustments relating to the
     recoverability and classification of liabilities that might be necessary
     should the Company be unable to continue as a going concern.  Despite its
     negative cash flow, the Company has been able to secure financing to
     support its operations to date.  As described in note 7, the Company was
     not in compliance with certain covenants of its loan agreements at April
     30, 1999, but a waiver was obtained for such violations.  The Company has
     also reached agreement with its principal bank to amend certain provisions
     of the loan agreement to allow for additional borrowing capacity under
     Tranche B, to defer the borrowing base redetermination date from July 31,
     1999 to December 31, 1999 and extend the repayment due date to July 31,
     2001.  The amendment does not, however, change the scheduled repayment
     dates of Tranche A which commence on October 30, 2000.

                                                                             F-8
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued


     The Company's continuation as a going concern is dependent upon its ability
     to generate sufficient cash flow to meet is obligations on a timely basis,
     to continue to comply with the terms of its borrowing agreements, to obtain
     additional financing or refinancing as will be required and ultimately to
     attain profitability.  Management believes it has a business plan that, if
     successfully executed, will achieve these objectives.

     Reporting Currency

     The current operations are in the oil and gas industry in the United States
     and the United Kingdom and are conducted through subsidiaries, LaTex
     Petroleum Corporation, Alliance Resources (USA) Inc., Germany Oil Company,
     Difco Limited, and Source Petroleum Inc.  Transactions are conducted
     primarily in U.K. Sterling and US dollars. The directors consider that the
     US dollar is the functional currency of the Group and the Group's
     consolidated financial statements have been prepared in US dollars.

     Consolidation

     The consolidated financial statements comprise the financial statements of
     the Company and all other companies in which the Group's holding exceeds 50
     percent.  Transactions and balances between group companies are eliminated
     on consolidation.

     Earnings Per Share

     Basic loss per share has been computed by dividing the net loss
     attributable to ordinary shareholders by the weighted average number of
     ordinary shares outstanding during the period.

     The effect of potential common shares (warrants, options and convertible
     subordinated unsecured loan notes) is anti-dilutive.  Accordingly, diluted
     loss per share is not presented.

     Foreign Currency Translation

     The financial statements of companies of the Group whose functional
     currency is not US dollars are translated for consolidation purposes at the
     rate of exchange ruling at the balance sheet date.  Exchange differences
     arising on the retranslation of net assets are reported as a component of
     stockholders' equity(deficit) in accumulated other comprehensive loss.  In
     the underlying financial statements, transactions with third parties are
     translated into the functional currency at the exchange rate prevailing at
     the date of each transaction.  Monetary assets and liabilities denominated
     in currencies other than the functional currency are translated into US
     dollars at the exchange rate prevailing at the balance sheet date. Any
     exchange gain or loss is dealt with through the consolidated statement of
     operations.

     The Group's share capital is denominated in sterling and for the purposes
     of the consolidated financial statements, is translated into US dollars at
     the rate of exchange at the time of its issue.

     Revenues

     Revenues represents income from production and delivery of oil and gas,
     recorded net of royalties in kind. The Group follows the sales method of
     accounting for gas imbalances.  A liability is recorded only if the Group's
     excess takes of gas volumes exceed its estimated recoverable reserves from
     the relevant well and no receivable is recorded where the Group has taken
     less than its entitlement to gas production.

                                                                             F-9
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued


     Oil and Gas Interests

     The Group follows the full cost method of accounting for oil and gas
     operations whereby all costs of exploring for and developing oil and gas
     reserves are capitalized as tangible fixed assets.  Such costs include
     lease acquisition costs, geological costs, the costs of drilling both
     productive and non-productive wells, capitalized interest, production
     equipment and related overhead costs.  Capitalized costs, plus estimated
     future development costs, are accumulated in pools on a country-by-country
     basis and depleted using the unit-of-production method based upon estimated
     net proved reserve volumes.  Reserve volumes are combined into equivalent
     units using approximate relative energy content.

     Costs of acquiring and evaluating unproved properties and major development
     projects are excluded from the depletion calculation until it is determined
     whether or not proved reserves are attributable to the properties, the
     major development projects are completed, or impairment occurs, at which
     point such costs are transferred into the pool.

     Proceeds from the sale or disposal of properties are deducted from the
     relevant cost pool except for sales involving significant reserves where a
     gain or loss is recognized.

     The Group performs a "ceiling test" calculation in line with industry
     practice.  Costs permitted to be accumulated in respect of each cost pool
     are limited to the future estimated net recoverable amount from estimated
     production of proved reserves.  Future estimated net recoverable amounts
     are determined after income taxes, discounting and using prices and cost
     levels at the balance sheet date.

     Provision is made for abandonment costs net of estimated salvage values, on
     a unit-of-production basis, where appropriate.

     Depreciation of Other Fixed Assets

     Other tangible fixed assets are stated at cost less accumulated
     depreciation.  Depreciation is provided on a straight line basis to write
     off the cost of assets, net of estimated residual values, over their
     estimated useful lives as follows:

                   Fixtures and equipment   -  3 to 7 years
                   Buildings                -  30 years

     Deferred Taxation

     Deferred tax assets and liabilities are recognized for the estimated future
     tax consequences attributable to differences between the financial
     statement carrying amounts of existing assets and liabilities and their
     respective tax bases.  Deferred tax assets and liabilities are measured
     using enacted tax rates in effect for the year in which those temporary
     differences are expected to be recovered or settled.  The effect on
     deferred tax assets and liabilities of a change in tax rates is recognized
     in the consolidated statement of operations in the period that includes the
     enactment date.

     Joint Ventures

     The Group's exploration, development and production activities are
     generally conducted in joint ventures with other companies.  The
     consolidated financial statements reflect the relevant proportions of
     turnover, production, capital expenditure and operating costs applicable to
     the Group's interests.

                                                                            F-10
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued


     The effects of redeterminations of equity interests in joint ventures are
     accounted for when the outcome of the redetermination is known.

     Leases

     Rentals under operating leases are charged to the consolidated statement of
     operations on a straight line basis over the lease term.

     Debt Issuance Costs

     Debt issuance costs are initially capitalized as intangible assets and are
     amortized over the term of the debt to which they relate.

     Derivatives

     Changes in value of financial instruments, utilized to hedge commodity
     price and interest rate risk are recognized in the consolidated statement
     of operations when the underlying transactions are recognized.  Changes in
     value of financial instruments which do not meet the criteria to be treated
     as a hedge of an underlying risk are recognized in the consolidated
     statement of operations as they occur.

     The Group's criteria for a derivative instrument to qualify for hedge
     accounting treatment are as follows:
       --the timing or duration, quantum and characteristics of the underlying
         exposure must have been identified with reasonable certainty;
       --changes in the value of the derivative must correlate to a high degree
         with changes in the present value of the exposure under a wide range of
         possible circumstances;
       --the derivative has been designated as a hedge or is a synthetic
         alteration of a specific asset, liability or anticipated transaction;
         and
       --the derivative instrument either: (a) reduces exposure of net income or
         cash flow to fluctuations caused by movements in commodity prices,
         currency exchange rates or interest rates, including fixing the cost of
         anticipated debt issuance; or (b) alters the profile of the group's
         interest rate or currency exposures, or changes the maturity profile of
         the investment portfolio, to achieve a resulting overall exposure in
         line with policy guidelines.

     For any termination of derivatives receiving hedge accounting treatment,
     gains and losses are deferred when the relating underlying exposures remain
     outstanding and are included in the measurement of the related transaction
     or balance.  In addition, upon any termination of the underlying exposures,
     the derivative is marked-to-market and the resulting gain or loss is
     included with the gain or loss on the terminated transaction.  The Group
     may re-designate the remaining derivative instruments to other underlying
     exposures provided the normal criteria are all met.

     Cash Flow Statement

     For the purposes of the consolidated statement of cash flows, the Group
     treats all investments with an original maturity of three months or less to
     be cash equivalents.

     Stock Option Plan

     The Company has adopted Statement of Financial Accounting Standards (SFAS)
     No. 123, Accounting for Stock-Based Compensation, which permits entities to
     recognize as expense over the vesting period the fair value of all stock-
     based awards on the date of grant.  Alternatively, SFAS No. 123 also allows
     entities to continue to apply the provisions of Accounting Principles Board
     (APB) Opinion No. 25, Accounting for Stock-Based

                                                                            F-11
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued


     Compensation, and provide pro forma net income and pro forma earnings per
     share disclosures for employee stock option grants made in future years if
     the fair-value-based method defined in SFAS No. 123 had been applied. The
     Company has elected to apply the provisions of APB Opinion No. 25 and
     provide the pro forma disclosure provisions of SFAS No. 123.

     Accounting Estimates

     In the course of preparing financial statements, management makes various
     assumptions and estimates to determine the reported amounts of assets,
     liabilities, revenue and expenses and in relation to the disclosure of
     commitments and contingencies.  Changes in these assumptions and estimates
     will occur as a result of the passage of time and the occurrence of future
     events and, accordingly, the actual results could differ from the amounts
     estimated.

     Business Segments

     The Group adopted Financial Accounting Standard (FAS) 131 "Segment
     Disclosures and Related Information" during the year ended April 30, 1998.
     Prior to April 30, 1997, the Group sold a portion of its oil and gas
     production volumes through its oil and gas marketing subsidiary although
     the operations and net assets of that subsidiary were not separately
     managed.  The Group considers itself to be involved in one business
     activity and does not meet the criteria established by FAS 131.
     Accordingly, information regarding marketing activities has not been
     included for any periods presented.

     Comprehensive Income (Loss)

     The Company has adopted Financial Accounting Standards Board issued
     Statement of Financial Standards No. 130, "Reporting Comprehensive Income"
     (Statement No. 130).  Statement No. 130 establishes standards for reporting
     and display of comprehensive income and its components in a full set of
     general-purpose financial statements.  The Company has reported accumulated
     other comprehensive loss as a separate line item in consolidated balance
     sheets.  The components of total comprehensive income (loss) for the
     periods consist of net losses and foreign currency translation.

     Significant Differences between U.S. and U.K. Accounting Principles

     The accounting policies used in the preparation of these financial
     statements conform with U.S. generally accepted accounting principles
     ("U.S. GAAP") which differ in certain respects from U.K. generally accepted
     accounting principles ("U.K. GAAP").  Differences which may have a
     significant effect on net loss and shareholders' deficit are set out below.


<TABLE>
<CAPTION>
                                           Nine months ended      Year ended         Year ended
                                             April 30, 1997     April 30, 1998     April 30, 1999
                                             (in thousands)     (in thousands)     (in thousands)
                                           -----------------  -----------------  -----------------
<S>                                        <C>                <C>                <C>
       Effect on net loss--
          Net loss under U.S. GAAP              $(4,389)           $(4,729)           $(34,464)
          Ceiling test adjustment (a)                 -                  -              23,481
                                                -------            -------            --------
          Approximate net loss under U.K.
            GAAP                                $(4,389)           $(4,729)           $(10,983)
                                                =======            =======            ========
</TABLE>


                                                                            F-12
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued


<TABLE>
<CAPTION>
                                                                      April 30
                                                           ------------------------------
                                                                1998            1999
                                                           (in thousands)  (in thousands)
                                                           --------------  --------------
<S>                                                        <C>             <C>
     Effect on shareholders deficit--
      Stockholders' equity under U.S. GAAP                     $2,183         $(16,637)
      Adjustments:
       Ceiling test (a)                                             -           23,481
       Convertible subordinated unsecured loan notes (b)        1,551            1,551
       Acquisition of Difco (c)                                     -            1,272
                                                               ------         --------
                                                               $3,734         $  9,667
                                                               ======         ========
</TABLE>

     (a)  Under U.S. GAAP, ceiling tests are calculated using prices prevailing
          at the year end. Under U.K. GAAP, a reasonable assessment of future
          prices is used. At April 30, 1999, the spot price for gas in the U.K.
          was significantly below management's reasonable expectation of future
          prices resulting in a significantly greater charge under U.S. GAAP
          than under U.K. GAAP.

     (b)  Under U.S. GAAP, the convertible subordinated unsecured loan notes are
          treated as a liability. Under U.K. GAAP, the convertible subordinated
          unsecured loan notes are included as part of shareholders' equity as
          in substance their terms are economically equivalent to warrants with
          a zero strike price and Alliance has no obligation to transfer future
          economic benefit to the holder of the loan notes.

     (c)  Under U.S. GAAP, the shares issued to the vendors of Difco are
          recorded at the more readily determinable value. Under U.K. GAAP, the
          shares are recorded at the value of the underlying interest in the
          East Irish Sea Interests.

     In addition there are a number of other classification and disclosure
     differences which do not impact net loss or shareholders' deficit.

(2)  Acquisition of Difco Limited and U.K. Interests

     On October 30, 1998, Alliance completed its acquisition of Difco Limited
     ("Difco").  Alliance acquired all of the capital stock of Difco and,
     indirectly, a contract to acquire 10% of Burlington Resources (Irish Sea)
     Limited's ("Burlington") interest in the East Irish Sea Properties ("U.K.
     Interests").  The Difco shareholders received 10,000,000 convertible shares
     valued at $7,208,000. Such value was derived based on the value of the
     underlying market value of the shares issued. The shares issued represented
     approximately 8.7% of the outstanding shares of the Company. The former
     Difco shareholders could receive up to 29.6% of the outstanding shares of
     the Company based upon the production from, or reserves attributable to,
     the U.K. Interests. The Company acquired, through Difco, 10% of
     Burlington's interest in the East Irish Sea Properties for cash
     consideration of approximately $17,800,000. The Company issued to its
     financial advisor 615,385 ordinary shares in payment of a fee of $330,000
     incurred in connection with the transactions. The total acquisition cost,
     including transaction costs, was allocated to oil and gas properties.

                                                                            F-13
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued


     The following unaudited pro forma financial information presents the
     combined results of operations of the Company and Difco as if the
     acquisition had occurred as of the beginning of fiscal years 1998 and 1999,
     after giving effect to certain adjustments, including increased interest
     expense on debt related to the acquisition and amortization of deferred
     loan costs and debt discount.  The pro forma financial information does not
     necessarily reflect the results of operations that would have occurred had
     the Company and Difco constituted a single entity during such periods.

                                                 (Unaudited)
                                        --------------------------------
                                             Year ended April 30
                                        --------------------------------
                                           1998                1999
                                        -----------         ------------
            Revenues                    $10,209,881         $  6,234,477
                                        ===========         ============
            Net loss                    $(7,760,657)        $(36,497,108)
                                        ===========         ============
            Loss per share              $     (0.15)        $      (0.77)
                                        ===========         ============

(3)  Acquisition of LaTex

     On May 1, 1997, Alliance, completed its acquisition of LaTex, whereby a
     newly formed wholly-owned subsidiary of Alliance merged with and into LaTex
     with LaTex being the surviving corporation for accounting purposes.  In
     consideration the shareholders and warrant holders of LaTex received an
     aggregate of 21,448,787 shares of Alliance (the "New Alliance Shares") and
     warrants to purchase an additional 1,927,908 New Alliance Shares.

     As a result, after giving effect to a 40-to-1 reverse stock split of the
     Alliance ordinary shares, each shareholder of LaTex on May 1, 1997,
     received 0.85981 ordinary shares for each share of LaTex common stock,
     2.58201 ordinary shares for each share of the LaTex Series A preferred
     stock then held, 6.17632 ordinary shares for each share of LaTex Series B
     preferred stock then held, and a warrant to purchase 0.85981 share for each
     share of LaTex Common Stock subject to warrants.

     The purchase price was arrived at as follows:

       Value of 8,103,816 Alliance shares outstanding                $4,039,339
       Acquisition costs                                                871,000
                                                                     ----------
                                                                     $4,910,339
                                                                     ==========

     The value of the Alliance shares outstanding was arrived at by using the
     share price of LaTex at the time of announcement of the acquisition
     adjusted by the exchange ratio.

     Transaction costs incurred by Alliance reduced the fair value of Alliance's
     monetary assets and liabilities at the date of the acquisition.

     The fair value of the assets and liabilities of the acquired business at
     the effective date of acquisition is as follows:

       Cash                                                         $ 1,460,555
       Other current assets                                             480,045
       Other assets                                                     202,253
       Oil and gas assets                                             5,268,929
       Other fixed assets                                               253,386
       Debt                                                             (85,420)
       Other liabilities and provisions                              (2,669,409)
                                                                    -----------
                                                                    $ 4,910,339
                                                                    ===========

                                                                            F-14
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued


     In connection with the acquisition, Alliance issued to Bank of America, the
     Company's principal lender, 156,250 ordinary shares and convertible
     subordinated unsecured loan notes convertible into 115,456 ordinary shares
     to settle fees of $200,000 and $150,000 payable upon restructuring of
     LaTex's bank debt. In addition the Company agreed to issue 116,895 ordinary
     shares to Rothschild Natural Resources, LLC in settlement of outstanding
     fees of $150,000.

     Alliance has also issued 1,343,750 ordinary shares, convertible
     subordinated unsecured loan notes convertible into 1,078,125 ordinary
     shares and 1,210,938 warrants to Bank of America in exchange for an
     overriding royalty interest in most of LaTex's properties held by Bank of
     America.

     The purchase price was allocated to oil and gas properties and has been
     arrived at as follows:


      Value of 1,343,750 ordinary shares and warrants issued      $2,371,300
      Value of convertible subordinated unsecured loan
      note issued                                                  1,400,700
                                                                  ----------
                                                                  $3,772,000
                                                                  ==========

(4)  Impairment of U.K. Interests

     As discussed in Note 1, the Company utilizes the full cost method of
     accounting for its oil and gas operations and performs a "ceiling test."
     The ceiling test limits the costs accumulated in respect of each cost pool
     to net amounts that can be recovered from the estimated production of
     proved reserves.  The net amounts recovered are determined utilizing a 10%
     discount factor and pricing and cost levels at the balance sheet date.

     The U.K. Interests consist of proven reserves and the current development
     program is being conducted to produce these reserves.  Although the Company
     intends to enter into term gas delivery contracts which would be expected
     to be at prices above the spot price at April 30, 1999, the Group does not
     have contracts in place at April 30, 1999 with purchasers and, accordingly,
     has utilized the spot market price to value such interests. The utilization
     of these factors has resulted in a ceiling test write-down of approximately
     $28,000,000 for U.S. GAAP purposes.

(5)  Financial Instruments

     The carrying value of cash and cash equivalents, accounts receivables and
     accounts payable approximate the estimated fair value of those financial
     instruments due to their short maturities.  The estimated fair value of the
     interest rate swap agreement, based on current market rates, approximated a
     net payable of $445,767 and $248,884 at April 30, 1998 and 1999,
     respectively.  The estimated fair value of the commodity derivative
     instruments approximates a net receivable of $409,395 at April 30, 1998 and
     a net payable of $128,479 at April 30, 1999.  The carrying value of long-
     term debt approximates to the fair value, as advised by the Group's
     bankers.  See note 15.

     Fair value is defined as the amount at which the instrument could be
     exchanged in a current transaction between willing parties.

                                                                            F-15
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued



(6)  Income Taxes

     Income taxes different from the amounts computed by applying the U.S.
     federal tax rate of 34% as a result of the following (in thousands):

<TABLE>
<CAPTION>
                                                             Nine months
                                                                ended          Year ended         Year ended
                                                              April 30,         April 30,          April 30,
                                                                1997              1998               1999
                                                           ---------------  -----------------  -----------------

<S>                                                        <C>              <C>                <C>
     Computed expected tax benefit                          $     (1,492)    $       (1,608)    $      (11,718)
     Increase in valuation allowance for                           1,301              6,792             11,296
       deferred tax, assets
     Net operating losses acquired                                     -             (5,513)                 -
     Other                                                           191                329                422
                                                                  -------            -------           --------
     Actual income tax benefit                              $           -    $             -    $             -
                                                                  =======            =======           ========
</TABLE>

     The tax effects of temporary differences that give rise to significant
     portions of the deferred tax assets and liabilities are presented below in
     thousands:

<TABLE>
<CAPTION>
                                                                               1998                1999
                                                                         -----------------  ------------------
<S>                                                                      <C>                <C>
     Total deferred tax liabilities -
        Property and equipment                                                   $  1,754            $      -
                                                                                 --------            --------
     Deferred tax assets:
        Net operating and other loss carryovers                                    15,473              15,238
        Property and equipment                                                          -              10,034
        Investment write-downs                                                        917                 917
        Percentage depletion carryforward                                             390                 267
        Accrued expenses not deductible until paid                                    219                  85
                                                                                 --------            --------
     Total deferred tax assets                                                     16,999              26,541
        Valuation allowance                                                       (15,245)            (26,541)
                                                                                 --------            --------
     Net deferred tax assets                                                        1,754                   -
                                                                                 --------            --------
     Net deferred tax asset (liability)                                          $      -            $      -
                                                                                 ========            ========
</TABLE>


     A valuation allowance is required when it is more likely than not that all
     or a portion of the deferred tax assets will not be realized.  The ultimate
     realization of the deferred tax assets is dependent upon future
     profitability. Accordingly, a valuation allowance has been established to
     reduce the deferred tax assets to a level which, more likely than not, will
     be realized.

     The Group has net operating loss carryovers to offset future taxable
     earnings of approximately $44,000,000, including approximately $36,000,000
     of losses limited under Section 382 of the Internal Revenue Code.  If not
     previously utilized or limited, the net operating losses will expire in
     varying amounts from 2004 to 2019.

                                                                            F-16
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued



(7)    Long-Term Debt

       Long-term debt at April 30, 1998 and 1999 consists of the following:

<TABLE>
<CAPTION>
                                                           1998               1999
                                                       ------------        -----------

<S>                                                     <C>          <C>
           BoA:
               Tranche A                                $         -        $18,500,000
               Tranche B                                          -         16,330,348
               Tranche C                                          -          5,000,000

           EnCap                                                  -         10,243,775

           Alliance Credit Agreement                     21,066,762                  -
                                                        -----------        -----------
                                                         21,066,762         50,074,123
               Less unamortized discount                          -          6,897,502
                                                        -----------        -----------
           Long-term debt                                21,066,762         43,176,621
               Less current portion                       2,275,000                  -
                                                        -----------        -----------
           Long-term debt less current portion          $18,791,762        $43,176,621
                                                        ===========        ===========
</TABLE>

     Alliance entered into a Credit Agreement (the "Alliance Credit Agreement")
     with the Bank of America effective May 1, 1997, amending and restating the
     Group's previous credit agreement.  A portion of the borrowings under the
     Alliance Credit Agreement bore interest, payable monthly, at a rate equal
     to the higher of the Bank of America Reference Rate plus 1% and the Federal
     Funds Rate plus 1-1/4%.  Another portion of the borrowings bore interest,
     payable monthly, at a rate equal to the London Interbank Offered Rate plus
     2%.  The rate at April 30, 1998 was 7.875%.  Principal payments were
     scheduled to commence on October 31, 1998.  The note was scheduled to
     mature on March 31, 2000.  Amounts outstanding were secured by mortgages
     which cover the majority of the Group's oil and gas properties.

     In connection with the Difco Acquisition (See Note 2), the Company entered
     into agreements with Bank of America National Trust & Savings Association
     ("BoA"), Alliance's principal lender and EnCap Equity 1996 Limited
     Partnership and EnCap Capital Investment Company PLC (collectively "EnCap")
     providing up to $64,750,000 in debt, as follows:

                BoA:
                  Tranche A                      $30,000,000
                  Tranche B                       20,000,000
                  Tranche C                        5,000,000
                                                 -----------
                                                  55,000,000
                EnCap                              9,750,000
                                                 -----------
                                                 $64,750,000
                                                 ===========


     Tranche A consists of a revolving credit facility secured by a first
     priority lien and security interest in all of the oil and gas properties of
     the Company.  The Company's initial borrowing base is $18,500,000 and is
     redetermined semiannually on January 31 and July 31.  Interest is at a rate
     determined by the Company from time to time, of either (i) the greater of
     BoA's reference rate and the federal funds effective rate plus 0.5%, or
     (ii) 2.0% above the current Interbank rate (7.5% at April 30, 1999).
     While any Tranche B loan is outstanding, the preceding margins will be
     increased by an additional 0.5% semi-annually on April 26 and on October 26
     of each year. Interest is payable quarterly and principal is due in equal
     quarterly payments beginning October 30, 2000 and ending on October 30,
     2003.

                                                                            F-17
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued



     Tranche B consists of a credit facility secured by a first priority lien
     and security interest in all of the oil and gas properties of the Company.
     Interest is at a rate determined by the Company from time to time, of
     either (i) BoA's Tranche B reference rate plus 2.0%, or (ii) 4.0% above the
     current Interbank rate (9.0% at April 30, 1999).  The margins for all
     Tranche B loans will be increased by an additional 0.5% semi-annually on
     April 26 and on October 26 of each year.  Interest is payable quarterly and
     principal is due in full on January 31, 2001.

     Tranche C consists of a credit facility secured by a first priority lien
     and security interest in all of the oil and gas properties of the Company.
     Interest is at a rate determined by the Company from time to time, of
     either (i) BoA's reference rate plus 5.0%, or (ii) 7.0% above the current
     Interbank rate (12.0% at April 30, 1999).  Interest is payable quarterly
     and principal is due in equal quarterly payments beginning January 31, 2001
     and ending on October 30, 2004.  The BoA debt facility contains various
     covenants, including, but not limited to, maintenance of minimum current
     and interest coverage ratios, as defined in the agreement.

     EnCap debt is unsecured and bears interest at 10%.  Interest is payable
     quarterly and principal is due in full on October 30, 2005.  Until October
     30, 2001, the Company has the option, in lieu of paying cash, of increasing
     the principal amount of the debt by the interest due.

     The Company paid BoA a cash fee of $700,000 and granted BoA warrants to
     purchase 3,275,000 ordinary shares at a price of 1p per share.  The fair
     value of the warrants, $1,335,000, attaching to the debt was treated as a
     discount.  In addition, the Company granted BoA an overriding royalty
     interest, valued at the value of the underlying oil and gas reserves, in
     the U.K. Interests of 0.3% beginning January 1, 2001.  The overriding
     royalty interest will entitle BoA to receive payment equal to the specified
     percentage of the net revenues generated by the  U.K. Interests.  In
     connection with obtaining the debt financing from BoA, the Company was
     required to enter into commodity price risk management contract on terms
     that are mutually agreeable to BoA and the Company for a period not less
     than two years with respect to at least 50% of the Company's estimated
     producing reserves as of October 31, 1998.  BoA also required the Company
     to enter into interest rate risk management contracts providing for a
     maximum interest rate of 9.0% on the notional amount projected to be
     outstanding on the revolving credit facility (See Note 2).

     In connection with the issuance of the EnCap debt, the Company sold EnCap
     15,000,000 ordinary shares with a fair value of $6,360,000 for cash
     consideration.  The difference was treated as a discount on the debt.  The
     Company also issued EnCap Investments L.C. 545,454 shares in consideration
     of a fee of $292,000.

     The Company was not in compliance with certain covenants of the loan
     agreements, which included but were not limited to the maintenance of
     minimum levels of working capital and interest coverage. Prior to these
     violations causing an event of default, which would have resulted in an
     acceleration of the repayment of the loans, the Company obtained waivers
     from the lenders for all covenant violations. Effective July 30, 1999, the
     loan agreement was amended to revise the borrowing limit of Tranche B to
     $25,000,000 and reduce the limit of Tranche A to a similar amount. The due
     date of Tranche B was extended from January 31, 2001 to July 31, 2001. In
     addition, the date of the borrowing base and collateral value
     redetermination, scheduled to occur on July 31, 1999, was deferred until
     December 31, 1999.

     The revised schedule of contractual maturities of long-term debt at April
     30, 1999 are as follows and do not include $5,000,000 borrowed under
     Tranche B subsequent to year end which is repayable during the year ending
     April 30, 2002:

                Year ending April 30, 2000     $            -
                                      2001          5,245,775
                                      2002         23,740,348
                                      2003          7,410,000
                                      2004          2,810,000
                                Thereafter         10,868,000

                                                                            F-18
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued



     The Group capitalizes interest cost as a component of the North Sea U.K.
     Interests development program. The following is a summary of interest cost
     incurred:

<TABLE>
<CAPTION>
                                                Nine Months ended                Year ended April 30
                                                    April 30
                                               -------------------    ---------------------------------------
                                                      1997                     1998                 1999
                                               -------------------      ------------------      -------------

              <S>                               <C>                      <C>                     <C>
              Interest cost capitalized                 $        -              $        -         $1,170,235
              Interest cost charged to income            2,102,933               2,573,646          3,354,627
                                                        ----------              ----------         ----------

                 Total interest cost incurred           $2,102,933              $2,573,646         $4,524,862
                                                        ==========              ==========         ==========
</TABLE>

(8)  Savings and Profit Sharing Plan

     The Group maintains an employee savings and profit sharing plan (the Plan)
     which covers substantially all of its employees.  The Plan is comprised of
     a 401(k) saving portion and a noncontributory defined contribution portion.
     Employees are qualified to participate after approximately one year of
     service.  Participating in the 401(k) plan is voluntary, and the Group
     matches contributions up to six percent of the employees' salary at a rate
     of 50 percent of the employee's contribution.  The Group contributed
     $8,481, $9,243, and $17,523 to the plan during the nine months ended April
     30, 1997, and the years ended April 30, 1998 and 1999, respectively.

     The noncontributory portion of the Plan allows the Group to share annual
     profits with employees.  Annual payments to the Plan are elective.
     Management elected to make no contributions to the Plan for the nine months
     ended April 30, 1997 and the years ended April 30, 1998 and 1999.  The
     Group is under no obligation to make contributions to the Plan in the
     future.

(9)  Capital Stock

     On May 1, 1997, the Company's share capital was consolidated such that
     every 40 ordinary shares of 1 pence each were consolidated into 1 ordinary
     share of 40 pence.  All prior capital stock amounts have been restated to
     reflect this reverse stock split.  At the same date, the Company issued
     21,448,747 ordinary shares of 40 pence each to the holders of the issued
     ordinary shares and preference shares of LaTex outstanding at that date.

     On October 30, 1998, the Company entered into a capital reorganization plan
     that subdivided each ordinary share into one new ordinary share with a par
     value of 1 pence and 39 deferred shares with a par value of 1 pence each.
     The resulting ordinary shares have the same rights as the ordinary shares
     at 40 pence each.  The deferred shares have no substantive rights, are not
     represented by certificates issued to shareholders, and may be redeemed by
     the Company by the payment of a total of 1 pence for all of the deferred
     shares.

(10) Stock Option Plans

     Effective October 21, 1996, each holder of options granted under the
     Group's 1993 Incentive Stock Plan agreed to terminate all options held and
     receive grants of 1,690,000 Restricted shares of LaTex Common Stock which,
     on May 1, 1997, was exchanged for Alliance shares.  The Group recognized an
     employee bonus of $528,125 related to this transaction based on the market
     value of LaTex's stock on the date of grant.  No tax gross up rights were
     granted in connection with the issue of the Restricted Stock.

                                                                            F-19
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued


     Since May 1, 1997, the Group operates two employee share option schemes.
     Both schemes have similar terms, the principal terms being:
     --  any director or employee may be granted options over Shares;
     --  the subscription price will be no less than market price at the date
         of grant;
     --  options granted to an individual are limited such that the aggregate
         market value of shares subject to option taken together with the
         aggregate market value of shares which have been acquired under rights
         granted under the schemes in the previous ten years does not exceed
         four times cash salary;
     --  the exercise of options may be subject to performance tests. Long term
         options (exercisable after 5 years) may be subject to growth in
         earnings per share over the immediately preceding five years matching,
         exceeding growth in earnings per share of the companies ranked in the
         top 25 of the FTSE-100 share index, or growth in the Company's share
         price during the five year exercise period.

     A summary of the status of the share option schemes is as follows:

                                        Shares       Weighted average
                                                      service price
                                       ---------  ----------------------
          As at May 1, 1997                    -                 -
             Granted                     675,000        24.5 pence
             On acquisition of LaTex     237,500          80 pence
                                       ---------
          As at April 30, 1998           912,500        38.9 pence
             Granted                   2,365,000        13.5 pence
             Cancelled                  (175,000)         80 pence
                                       ---------
          As at April 30, 1999         3,102,500        17.2 pence
                                       =========

     Included in the options granted during the year ended April 30, 1999 were
     1,700,000 long-term options which were subject to the Company's share price
     increasing three-fold during the five year exercise period of the options.

     The Group's accounting policy for compensation cost is in line with
     Accounting Principles Board Opinion 25. Accordingly, compensation cost has
     not been recognized for share option plans except to deal with any
     discounts on option exercise prices, compared with market prices at the
     measurement date.  For the year ended April 30, 1998, had compensation
     costs been charged against income based on the fair value at the grant-
     dates for awards under the share option plans, consistent with Statement of
     Financial Accounting Standards No. 123, the net loss and net loss per share
     would not have been materially different.  This was determined using the
     Black Scholes option pricing model utilizing the following assumptions:

             Risk free interest rate           5.3%
             Expected life                     10 years
             Volatility                        5.93%

     At April 30, 1999, the Company also had outstanding 50,000 options to
     purchase shares at 300 pence per share which have been issued other than
     pursuant to the employee share options schemes.

                                                                            F-20
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued



(11) Warrants

     On May 1, 1997 the Company issued warrants to subscribe for 1,927,908
     ordinary shares of 40 pence each in exchange for the then outstanding
     warrants to subscribe for ordinary shares in LaTex.  For periods ended on
     or before April 30, 1997, the warrants outstanding reflect the Alliance
     warrants issued on May 1, 1997, as though issued at the date of issue of
     the LaTex warrants for which the Alliance warrants were exchanged.

     Warrants to subscribe for 1,210,938 ordinary shares were issued to Bank of
     America as part consideration for the acquisition of the overriding royalty
     interest (see note 3).  At April 30, 1998, the Company had outstanding
     2,916,527 warrants.

     Warrants to subscribe to 3,275,000 common shares at a price of 1 pence per
     share were issued to Bank of America in connection with the Difco
     acquisition (see Note 7).

     In November, 1998, warrants to purchase 1,112,378 Ordinary Shares at a
     price equal to the sterling equivalent of $4.94 expired.

<TABLE>
<CAPTION>
         Warrant series           Strike price           Last date for exercise        No. of shares

<S>                               <C>                     <C>                           <C>
     Series "D"                      $0.87                  March 31, 2001                 287,119
     Series "E"                      $0.87                 October 31, 2001                 30,953
     Series "F"                      $1.40                 December 16, 2002               275,139
     Series "G" (BOA)        (Pounds) 1.00                  April 30, 2007               1,210,938
     Series "H"                       1 p.                 October 31, 2009              3,275,000
                                                                                         ---------
                                                                                         5,079,149
                                                                                         ---------
</TABLE>

(12) Convertible Subordinated Unsecured Loan Notes

     At April 30, 1998 and 1999 the Group had outstanding loan notes convertible
     into 1,193,581 ordinary shares of which loan notes convertible into
     1,078,125 ordinary shares were issued in part consideration for the
     acquisition of the overriding royalty interest amounting to $1,400,700 (see
     note 3) and loan notes convertible into 115,456 ordinary shares were issued
     to settle restructuring and arrangement fees of $150,000 in connection with
     the LaTex acquisition.  The loan notes, which are non-interest bearing, are
     convertible by the holders (on the payment of a nominal cash consideration)
     any time up to ten years following their date of issue. They are
     convertible in the following six months on like terms at the option of the
     Company. Any loan notes not converted prior to the date ten years and six
     months from issue will be repaid on that date at an amount equal to twice
     the amount paid up on the notes.

(13) Contingencies and Commitments

     The Group is a named defendant in lawsuits, and is subject to claims of
     third parties from time to time arising in the ordinary course of business.
     While the outcome of lawsuits or other proceedings and claims against the
     Group cannot be predicted with certainty, management does not expect these
     additional matters to have material adverse effect on the financial
     position or results of operations or liquidity of the Group.

                                                                            F-21
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued



     The Group leases office space and certain property and equipment under
     various lease agreements.  As of April 30, 1999, future minimum lease
     commitments were approximately as follows:

                 Year Ending April 30
                 --------------------
                       2000                  $  193,701
                       2001                     196,905
                       2002                     200,098
                       2003                     203,301
                       2004                      16,964

     Rent expense under all operating leases was $160,780, $252,627, and
     $251,447 during the nine months ended April 30, 1997, and the years ended
     April 30, 1998 and 1999, respectively.

(14) Related Party Transactions

     The Group, prior to May 1, 1997, has made loans to certain officers,
     directors and stockholders.  During the nine months ended April 30, 1997,
     the board of directors forgave $391,218, of notes and accrued interest, due
     from directors and former officers of the Group.  This amount is included
     in general and administrative expenses.

     During the year ended April 30, 1998, the Company received $123,000 of
     proceeds from the sale of 10,351,966 shares in the Company which had
     previously been owned by the former Chief Executive of the Company.  The
     right to receive the proceeds from the sale of the shares arose from a
     settlement agreed between the Company and Mr. O'Brien following the
     discovery that the Company had suffered a financial loss as a result of a
     number of transactions involving Mr. O'Brien or parties connected with him.

(15) Derivatives

     Oil and Gas

     Effective May 15, 1997, the Group terminated a previously existing oil and
     gas pricing derivative at a cost of $1,128,000 settled by an increase in
     the Bank of America loan. The loss relating to the buy-out was recognized
     in its entirety during the year ended April 30, 1998, consequent upon the
     Group entering into a new price protection agreement.

     On October 23, 1997, the Group entered into commodity price hedge
     agreements to protect against price declines which may be associated with
     the volatility in oil and gas spot prices.  The commodity price hedges were
     achieved through the purchase of put options (floors) by the Group, and the
     associated premium cost was funded by additional drawdowns under the
     current credit agreement.  The commodity price hedges covered 32,000 bbls
     and 100,000 MMBTUs per month for the year to October 31, 1998, and covered
     in excess of 90% of the Group's current monthly sales volumes.  The floors
     equated to approximately $18.50/bbl Nymex WTI contract and $2.20/MMBTU
     Nymex Natural Gas contract.  On October 31, 1998, the Group's commodity
     price hedge agreements expired.

     During February 1999, the Company completed a transaction to hedge
     approximately 65% of its existing monthly gas production by installing a
     floor of $1.60/MMBTU and a cap of $2.07/MMBTU (NYMEX Natural Gas).  During
     April 1999, the Company completed a transaction to hedge approximately 40%
     of its existing monthly oil production by installing a floor of
     $12.00/barrel (NYMEX WTI).  This commodity price hedge agreement will
     protect the Company from any severe declines in oil and gas prices until
     expiration on October 31, 1999.

                                                                            F-22
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued



     Interest

     The Group is required, by agreement with its primary lender (see Note 7) to
     participate in an interest rate protection program, for interest on the
     debt payable to the primary lender until March 31, 2000.  Interest is
     hedged to achieve a fixed rate of 7.49%  calculated on a monthly basis
     based on a fixed amortization schedule determined on loan origination.  The
     notional principal is reduced each month by $365,000.  The notional
     principal outstanding at April 30, 1999 was $13,784,000 and this will have
     reduced at termination to $9,769,000.  The hedging gains/losses are
     included in interest expense.

(16) Disposition of Oil and Gas Properties

     During the nine months ended April 30, 1997 and the years ended April 30,
     1998 and 1999, the Group sold oil and gas properties for approximately
     $1,500,000, $5,600,000 and $1,742,000, respectively.  Proceeds of such
     sales were credited to the full cost pool.

(17) Supplemental Financial Information for Oil and Gas Producing Activities
     (Unaudited)

     Results of Operations from Oil and Gas Producing Activities

     The following sets forth certain information with respect to the Group's
     results of operations from oil and gas producing activities for the nine
     months ended April 30, 1997 and the years ended April 30, 1998 and 1999.
     All of the Group's oil and gas producing activities are located within the
     United States.

<TABLE>
<CAPTION>

                                                                   1997             1998                1999
                                                              (in thousands)    (in thousands)      (in thousands)
                                                              --------------    --------------      --------------
<S>                                                           <C>               <C>                  <C>
Revenues                                                       $    5,698        $   10,210           $   6,234

Production costs                                                   (2,550)           (4,849)             (2,770)
Gross production taxes                                               (567)             (657)               (326)
Depreciation, depletion and impairments                            (1,457)           (2,571)            (29,931)
Loss on termination of derivative contract                              -            (1,128)                  -
                                                              -----------       -----------          ----------
   Income (loss) from operations before income taxes                1,124             1,005             (26,793)
Income tax expense                                                      -                 -                   -
                                                              -----------       -----------          ----------
   Results of operations (excluding corporate                  $    1,124        $    1,005           $ (26,793)
     overhead and interest costs)                             ===========       ===========          ==========

</TABLE>

                                                                            F-23
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued



     Capitalized Costs and Cost Incurred Relating to Oil and Gas Activities

<TABLE>
<CAPTION>
                                                   1997                1998                1999
                                              (in thousands)      (in thousands)      (in thousands)
                                          -------------------  ------------------  -------------------
<S>                                       <C>                  <C>                 <C>
     United States                            $      36,107         $    43,200         $    42,902
     United Kingdom                                       -                   -              31,054
                                                  ---------           ---------           ---------
      Total capitalized costs                        36,107              43,200              73,956
     Less accumulated depreciation,                   9,432              13,571              43,842
       depletion and impairments                  ---------           ---------           ---------
     Net capitalized costs                    $      26,675         $    29,629         $    30,114
                                                  =========           =========           =========

     Costs incurred during the year:
      Exploration costs:
         United States                        $           -         $         -         $         -
         United Kingdom                                   -                   -                   -
                                                  ---------           ---------           ---------
                                              $           -         $         -         $         -
                                                  =========           =========           =========

     Development costs:
       United States                          $         348         $     1,821         $       974
                                                          -                 276               3,535
                                                  ---------           ---------           ---------
       United Kingdom                         $         348         $     2,097         $     4,509
                                                  =========           =========           =========

     Purchase of minerals in place:
       United States                          $           -         $     9,041         $       125
       United Kingdom                                     -                   -              29,625
                                                  ---------           ---------           ---------
                                              $           -         $     9,041         $    29,750
                                                  =========           =========           =========
</TABLE>


                                                                            F-24
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued



     Estimated Quantities of Proved Oil and Gas Reserves

     The estimates of proved oil and gas reserves were prepared by independent
     petroleum engineers.  The Group emphasizes that reserve estimates are
     inherently imprecise.  Accordingly, the estimates are expected to change as
     more current information becomes available.  In addition, a portion of the
     Group's proved reserves are undeveloped, which increases the imprecision
     inherent in estimating reserves which may ultimately be produced.

     Proved reserves are estimated quantities of crude oil, natural gas, and
     natural gas liquids which geological and engineering data demonstrate with
     reasonable certainty to be recoverable in future years from known
     reservoirs under existing economic and operating conditions.  Proved
     developed reserves are those which are expected to be recovered through
     existing wells with existing equipment and operating methods.

     The following is an analysis of the Group's proved oil and gas reserves.

<TABLE>
<CAPTION>
                                                              United States                  United Kingdom
                                                 ---------------------------------------  --------------------
                                                     Oil (Mbbls)          Gas (MMcf)           Gas (MMcf)
                                                 -------------------  ------------------  --------------------

     <S>                                              <C>                  <C>                 <C>
     Proved reserves at July 31, 1996                    6,353.0              28,172                     -
     Revisions of previous estimates                       417.7                (577)                    -
     Production                                           (190.0)             (1,640)                    -
                                                       ---------            --------            ----------
     Proved reserves at April 30, 1997                   6,580.7              25,955                     -

     Revisions of previous estimates                      (735.5)              2,149                     -
     Production                                           (396.2)             (1,689)                    -
     Purchases of reserves-in-place                      1,335.7               4,173                     -
     Sales of reserves-in-place                           (290.4)             (4,266)                    -
                                                       ---------            --------            ----------
     Proved reserves at April 30, 1998                   6,494.3              26,322                     -

     Purchase of reserves-in-place                             -                   -                73,870
     Revisions of previous estimates                     2,624.7              (1,125)              (64,137)
     Production                                           (278.1)             (1,402)                    -
     Sales of reserves-in-place                           (133.6)               (943)                    -
                                                       ---------            --------            ----------
     Proved reserves at April 30, 1999                   8,707.3              22,852                 9,733
                                                       =========            ========            ==========

     Proved developed reserves at:
      April 30, 1997                                     5,166.9              25,461                     -
                                                       =========            ========            ==========
      April 30, 1998                                     3,773.7              22,632                     -
                                                       =========            ========            ==========
      April 30, 1999                                     6,000.7              19,519                     -
                                                       =========            ========            ==========
</TABLE>

     During the nine months ended April 30, 1997, the Group sold oil and gas
     properties for approximately $1,500,000.  The Group chose not to include
     those properties in its reserve appraisal at July 31, 1996.

                                                                            F-25
<PAGE>

                    ALLIANCE RESOURCES PLC AND SUBSIDIARIES

             Notes to Consolidated Financial Statements, Continued




     Discounted Future Net Cash Flows

     In accordance with Statement of Financial Accounting Standards No. 69,
     estimates of the standardized measure of discounted future cash flows were
     determined by applying period-end prices, adjusted for fixed and
     determinable escalations, to the estimated future production of year-end
     proved reserves.  Future cash inflows were reduced by the estimated future
     production and development costs based on period-end costs to determine
     pre-tax cash inflows over the Group's tax basis in the associated proved
     oil and gas properties.  Net operating losses, credits and permanent
     differences were also considered in the future income tax calculation.
     Future net cash inflows after income taxes were discounted using a 10%
     annual discount rate to arrive at the Standardized Measure.

     Future income tax expenses are estimated using the statutory tax rate of
     34% and 30% in the United States and United Kingdom, respectively.
     Estimates for future general and administrative and interest expense have
     not been considered.

     The estimated standardized measure of discounted future cash flows (in
     thousands) follows:

<TABLE>
<CAPTION>
                                                                    U.S.                               U.K.
                                                 --------------------------------------------     -------------
                                                     1997            1998             1999             1999
                                                 ------------    ------------    ------------     -------------
         <S>                                     <C>             <C>             <C>              <C>
         Future cash inflows                      $   139,587     $   131,858     $   167,154      $     13,981
         Future production and                        (64,086)        (48,683)        (73,970)          (10,055)
          development costs                      ------------    ------------    ------------     -------------

         Future net cash inflows before                75,501          83,175          93,184             3,926
          income tax expense
         Future income tax expense                    (11,477)        (10,444)        (18,416)                -
                                                 ------------    ------------     ------------    -------------
         Future net cash flows                         64,024          72,731          74,768             3,926
         10% annual discount for estimated            (28,656)        (27,625)        (39,899)           (1,132)
          timing of cash flows                   ------------    ------------     ------------    -------------

         Standardized measure of discounted       $    35,368     $    45,106      $    34,869     $      2,794
          future net cash flows                  ============    ============    ============     =============

</TABLE>

The changes in standardized measure of discounted future net cash flows
(in thousands) follows:

<TABLE>


                                                                           U.S.                                 U.K.
                                                      ------------------------------------------------     --------------
                                                       Nine months
                                                          ended          Year ended       Year ended        Year ended
                                                      April 30, 1997   April 30, 1998   April 30, 1999     April 30, 1999
                                                      --------------   --------------   --------------     --------------
         <S>                                          <C>              <C>              <C>                <C>
         Beginning of period                           $      43,889    $      35,368    $      45,106      $           -
         Increases (decreases)
           Sales, net of production costs                     (4,074)          (4,338)          (2,765)                 -
           Net change in sales prices, net of
                 production costs                            (12,690)           7,671           (1,903)           (10,205)
           Changes in estimated future
                 development costs                              (280)          (1,161)            (924)              (134)
           Revisions of previous quantity estimates            1,282           (1,778)          12,115             (4,254)
           Accretion of discount                               5,350            3,963            4,856                827
           Net change income taxes                             5,345              813           (2,700)                 -
           Purchases of reserves-in-place                          -           12,720                -             16,560
           Sales of reserves-in-place                              -           (4,975)          (1,875)                 -
           Changes of production rates
               (timing) and other                             (3,454)          (3,177)         (17,041)                 -
                                                      --------------   --------------   --------------    ---------------

         End of period                                 $      35,368    $      45,106    $      34,869      $       2,794
                                                      ==============   ==============   ==============    ===============
</TABLE>


                                                                            F-26

<PAGE>

                                 Exhibit 10.1

                         DATED AS OF DECEMBER 1, 1998
                         ----------------------------




                          (1)  ALLIANCE RESOURCES PLC


                                     -and-


                              (2)  JOHN A. KEENAN



                         SECOND SUPPLEMENTAL AGREEMENT

                                      TO

                               EXECUTIVE SERVICE

                                   AGREEMENT

                             Dated 15 October 1996
<PAGE>

                SECOND SUPPLEMENTAL AGREEMENT TO EXECUTIVE SERVICE
                --------------------------------------------------
                                   AGREEMENT
                                   ---------

THIS SECOND SUPPLEMENTAL AGREEMENT TO EXECUTIVE SERVICE AGREEMENT dated as of
the 1st day of December 1998 and made between:

(1)  ALLIANCE RESOURCES PLC, a company registered in England and Wales, whose
     registered office is at Kingsbury House, 15-17 King Street, London  SW1Y
     6QU ("the Company"), and

(2)  JOHN A. KEENAN of 3134 E. 86th Street, Tulsa, Oklahoma  74137-2534, USA
     ("the Executive")

is supplemental to an Agreement dated 15th October 1996 and made between the
same parties are parties hereto as modified by Supplemental Agreement to
Executive Service Agreement dated 7 April, 1998.

RECITALS

(A)  The Company and the Executive have previously entered into executive
     service agreement dated 15th October 1996 as modified by Supplemental
     Agreement to Executive Service Agreement dated 7 April 1998 ("the
     Agreement") which provides for the Executive to be employed by the Company
     upon the terms and conditions therein appearing.  All defined terms used in
     the Supplemental Agreement and not otherwise defined have the meanings
     given in the Agreement.

(B)  The Company now wishes to make certain alterations to the Agreement as
     hereinafter appearing.

NOW, THEREFORE, the Parties hereto have agreed and do hereby agree as follows:

1.  Clause 2.4 of the Agreement shall be deleted and the following Clause 2.4
    shall be inserted in its place:

    On termination of the employment of the Executive at any time and for
    whatever reason and howsoever arising including, but not limited to,
    termination of the employment of the Executive following his receipt of the
    notice provided in Clause 2.3, but subject to the provisions of clause 12,
    the Company shall pay to the Executive in one lump sum on the day of such
    termination, a cash payment equal to twice (a) the Executive's annual salary
    as specified in this Agreement, and (b) aggregate bonuses and benefits for
    the preceding calendar year.

2.  Clause 7.3 of the Agreement shall be deleted and the following Clause 7.3
    shall be inserted in its place:
<PAGE>

    During the continuance of his employment hereunder the Executive shall be
    paid a car allowance sufficient to enable the Executive to acquire, operate
    and maintain an automobile commensurate with the Executive's capacity which
    allowance shall accrue from day to day and be paid in arrears on the last
    day of each month, or if that is not a business day, on the immediately
    preceding business day.

3.  Clause 12.8 (d) (i) of the Agreement shall be deleted and the following
    clause shall be inserted in its place:

    (i)  In one lump sum a cash payment equal to 2.5 times (A) the Executive's
         annual salary as specified in this Agreement, and (B) aggregate bonuses
         and benefits for the preceding calendar year.

4.  Save as varied by this supplemental agreement the Agreement shall remain in
    full force and effect.

IN WITNESS whereof this Agreement has been executed on the date first above
written.



Signed by Philip Douglas (Director and Chairman   }
of the Remuneration Committee of the Board of     }
Directors) for and on behalf of ALLIANCE          }-----------------------------
RESOURCES PLC in the presence of:                 }



Signed by JOHN A. KEENAN in the                   }
presence of:                                      }-----------------------------

<PAGE>

                                 Exhibit 10.2


                         DATED AS OF DECEMBER 1, 1998
                         ----------------------------



                          (1)  ALLIANCE RESOURCES PLC



                                     -and-



                             (2)  PAUL R. FENEMORE



                         SECOND SUPPLEMENTAL AGREEMENT

                                      TO

                               EXECUTIVE SERVICE

                                   AGREEMENT

                            Dated 20 September 1996
<PAGE>

                       SECOND SUPPLEMENTAL AGREEMENT TO
                       ---------------------------------
                          EXECUTIVE SERVICE AGREEMENT
                          ---------------------------


THIS SECOND SUPPLEMENTAL AGREEMENT TO EXECUTIVE SERVICE AGREEMENT dated as of
the 1st day of December 1998 and made between:

(1)  ALLIANCE RESOURCES PLC, a company registered in England and Wales, whose
     registered office is at Kingsbury House, 15-17 King Street, London SW1Y 6QU
     ("the Company"), and

(2)  PAUL RAYMOND FENEMORE of Flat1, 16-18 Kivelis Street, Nicosia, Cyprus ("the
     Executive")

is supplemental to an Agreement dated 20th September 1996 and made between the
same parties as are parties hereto as modified by Supplemental Agreement to
Executive Service Agreement dated 6th April 1998.

RECITALS

(A)  The Company and the Executive have previously entered into an executive
     service agreement dated 20th September 1996 as modified by Supplemental
     Agreement to Executive Service Agreement dated 6th April 1998 ("the
     Agreement") which provides for the Executive to be employed by the Company
     upon the terms and conditions therein appearing.  All defined terms used in
     this Supplemental Agreement and not otherwise defined have the meanings
     given in the Agreement.

(B)  The Company now wishes to make certain alterations to the Agreement as
     hereinafter appearing.

NOW, THEREFORE, the Parties hereto have agreed and do hereby agree as follows:

1.  Clause 2.2 of the Agreement shall be deleted and the following Clause 2.2
    shall be inserted in its place:

    The employment of the Executive shall (subject to the provisions of Clause
    12) be for an initial fixed period of two (2) years from 20th September 1996
    and shall automatically be extended without further action of either party
    for additional two (2) year periods, unless written notice of either party's
    intention not to extend has been given to the other party hereto at least
    three (3) months prior to the expiration of the then effective two (2) year
    period of employment. In the event of the latter the provisions of Clause
    2.3 shall still apply.

2.  Clause 2.3 of the Agreement shall be deleted and the following Clause 2.3
    shall be inserted in its place:
<PAGE>

     On termination of the employment of the Executive at any time and for
     whatever reason and howsoever arising, but subject to the provisions of
     Clause 12, the Company shall pay to the Executive in one lump sum on the
     day of such termination, a cash payment in an amount equal to twice (a) the
     Executive's annual salary as specified in this Agreement, and (b) aggregate
     bonuses and benefits for the preceding calendar year.

3.   A new clause 7.3 shall be inserted to read:

     During the continuance of his employment hereunder the Executive shall be
     paid a car allowance sufficient to enable the Executive to acquire, operate
     and maintain an automobile commensurate with the Executive's capacity which
     allowance shall accrue from day to day and be paid in arrears on the last
     day of each month, or if that is not a business day, on the immediately
     preceding business day.

4.   Clause 12.8(d) of the Agreement shall be deleted and the following Clause
     12.8(d) shall be inserted in its place:

     Upon (x) the termination of the Executive by the Company without cause
     following a Change in Control of the Company or (y) the Executive's
     voluntary termination of employment for good reason following a Change in
     Control, then the Company shall provide the Executive within thirty (30)
     days after the applicable event, in one lump sum a cash payment equal to
     2.5 times (A) the Executive's annual salary as specified in this Agreement,
     and (B) aggregate bonuses and benefits for the preceding calendar year.

5.   Save as varied by this supplemental agreement the Agreement shall remain in
     full force and effect.

IN WITNESS whereof this Agreement has been executed on the date first above
written


Signed by Philip Douglas (Director and Chairman    }
of the Remuneration Committee of the Board of      }
Directors) for and on behalf of ALLIANCE           }----------------------------
RESOURCES PLC in the presence of:                  }



Signed by PAUL R. FENEMORE in the                  }
presence of:                                       }----------------------------

<PAGE>

                                 Exhibit 10.3



                         DATED AS OF DECEMBER 1, 1998
                         ----------------------------


                          (1)  ALLIANCE RESOURCES PLC
                               ----------------------


                                    - and -



                          (2)  FRANCIS M. MUNCHINSKI
                               ---------------------



                                   EXECUTIVE
                                   ---------
                               SERVICE AGREEMENT
                               -----------------
<PAGE>

THIS AGREEMENT is made as of the 1st  day of December, 1998
- ---------------

BETWEEN:
- --------

(1)  ALLIANCE RESOURCES PLC, a company registered in England and Wales whose
     ----------------------
     registered office is at Kingsbury House, 15-17 King Street, London SW1Y 6QU
     ("the Company"), and

(2)  FRANCIS M. MUNCHINSKI of 5541 E. 107TH Street., Tulsa, Oklahoma  74137
     ("the Executive")

WHEREAS

     (A)  it has been agreed that the Executive is to be employed by the
          Company; and

     (B)  it has been agreed that said employment of the Executive shall be on
          the terms and subject to the conditions hereinafter written;

NOW, THEREFORE, THE PARTIES HERETO HAVE AGREED AND DO HEREBY AGREE AS FOLLOWS:

1.   DEFINITIONS AND INTERPRETATION
     ------------------------------

1.1  In this Agreement unless the context otherwise required words and phrases
     defined in Part XXVI of the Companies Act 1985 have the same meanings
     thereby attributed to them and the following expressions have the following
     meanings:

     "Associated Company" means any company which is a holding company or a
     subsidiary of the Company or a subsidiary of the Company's holding company;

     "the Board" means the Board of Directors present at a meeting of the
     directors of the Company at which a quorum is present but excluding the
     Executive;

     "Group" means the Company and the Associated Companies;

     "Intellectual Property" means patent trade marks, service marks, designs,
     utility models, design rights applications for registration of any of the
     foregoing and the right to apply for them in any part of the world,
     inventions, drawings, computer programs, Confidential Information, know-how
     and rights of like nature arising or subsisting anywhere in the world in
     relation to all of the foregoing whether registered or unregistered.

                                       2
<PAGE>

2.   COMMENCEMENT AND TERM
     ---------------------

2.1  The Executive's employment began on June 16, 1998.

2.2  This Agreement is in substitution for and shall supersede all or any former
     and existing agreements or arrangements for the employment of the Executive
     by the Company or an Associated Company all of which shall be deemed to
     have been canceled with effect from the date of commencement of this
     Agreement.

2.3  The employment of the Executive shall (subject to the provisions of Clause
     12) be for an initial fixed period of two (2) years from January 1, 1999
     and shall automatically be extended without further action of either party
     for additional two (2) year periods, unless written notice of either
     party's intention not to extend has been given to the other party hereto at
     least three (3) months prior to the expiration of the then effective two
     (2) year period of employment.

2.4  On termination of the employment of the Executive at any time and for
     whatever reason and howsoever arising, including, but not limited to,
     termination of the employment of the Executive following his receipt of the
     notice provided in Clause 2.3, but subject to the provisions of Clause 12,
     the Company shall pay to the Executive in one lump sum on the day of such
     termination, a cash payment equal to twice (a) the Executive's annual
     salary as specified in this Agreement and (b) aggregate bonuses and
     benefits for the preceding calendar year.

3.  OBLIGATIONS DURING EMPLOYMENT
    -----------------------------

3.1  The Executive shall during the continuance of his employment:

     (a)  serve the Company to the best of his ability in the capacity of
          General Counsel and shall perform such duties as are customary for a
          general counsel of comparable companies;

     (b)  faithfully and diligently perform such duties and exercise such powers
          consistent with them as the Managing Director may from time to time
          properly assign to or confer upon him;

     (c)  if and so long as the Managing Director so directs perform and
          exercise the said duties and powers on behalf of any Associated
          Company and act as a director or other officer of any Associated
          Company;

     (d)  do all in his power to protect, promote, develop and extend the
          business interests and reputation of the Group;

     (e)  at all times and in all respects conform to and comply with the
          business interests and reputation of the Group;

                                       3
<PAGE>

     (f)  promptly give to the Managing Director (in writing if so requested)
          all such information, explanations and assistance as he may require in
          connection with the business and affairs of the Company and any
          Associated Company for which he is required to perform duties;

     (g)  unless prevented by sickness, injury or other incapacity or as
          otherwise agreed by the Managing Director devote the whole of his
          time, attention, and abilities during his hours or work (which shall
          be normal business hours and such additional hours as may be necessary
          for the proper performance of his duties) to the business and affairs
          of the Company and any Associated Company for which he is required to
          perform duties;

     (h)  work at such place of business of the Company or any Associated
          Company within the United Kingdom and/or the United States as
          necessary for the proper performance and exercise of his duties and
          powers and in particular it is agreed that the Executive shall remain
          domiciled and receive payment for services rendered hereunder in the
          United States; and the Executive may be required to travel on the
          business of the Company and any Associated company (whether inside or
          outside the United Kingdom) for which he is required to perform
          duties; and

     (i)  at such times as the Managing Director may reasonably request and at
          the expense of the Company undergo a medical examination by a doctor
          of the Company's choice.

3.2  Notwithstanding the foregoing or any other provision of the Agreement, the
     Company may at any time after the Executive has given notice to terminate
     this Agreement suspend the Executive and/or exclude him from all or any
     premises of the Company or any Associated Company for any period not
     exceeding (12) months provided that throughout such period the Executive's
     salary and other contractual benefits shall continue to be paid or provided
     by the Company.

4.  FURTHER OBLIGATIONS OF THE EXECUTIVE
    ------------------------------------

4.1  During the continuance of his employment the Executive shall devote his
     whole time and attention to his duties under this Agreement and shall not
     without the prior written consent of the Managing Director (such consent
     not to be unreasonably withheld or delayed) directly or indirectly carry on
     or be engaged, concerned or interested in any other business trade or
     occupation which is similar to or in competition with the business of the
     Company or any Associated Company otherwise than as a holder directly or
     through nominees of not more than five per cent in aggregated of any class
     of shares debentures or other securities in issue from time to time of any
     company which are for the time being quoted or dealt in on any recognized
     investment exchange (as defined by Section 207(1) of the Financial Services
     Act 1986).

                                       4
<PAGE>

4.2  The Executive shall during the continuance of his employment (and shall
     procure that his spouse or partner and his minor children shall comply)
     with all applicable rules of law, and stock exchange regulations (including
     the "Model Code" issued by the International Stock Exchange of the United
     Kingdom and the Republic of Ireland Limited) and codes of conduct of the
     Company for the time being in force in relation to dealings in shares,
     debentures or other securities of the Company or any Associated Company or
     any unpublished price sensitive information affecting the securities of any
     other company.

4.3  The Executive shall in relation to any dealings in securities of overseas
     companies comply with all laws of any foreign state affecting dealings in
     the securities of such companies and all regulations of any relevant stock
     exchanges on which such dealings take place.

4.4  During the continuance of his employment the Executive shall observe the
     terms of any policy issued by the Company in relation to any payment,
     rebate, discount, commission, vouchers, gift or other benefit obtained by
     him from any third party in respect of any business transacted or proposed
     to be transacted (whether or not by him) by or on behalf of the Company or
     any Associated Company.

5.  REMUNERATION
    ------------

5.1  The Company shall pay to the Executive during the continuance of his
     employment a salary (which shall accrue from day to day) at the rate of One
     Hundred Forty Thousand U.S. Dollars (U.S. $140,000) per year. The salary
     shall be payable by equal bi-monthly installments in arrears on or about
     the 15th and 30th day of each calendar month.

5.2  The salary payable to the Executive under Clause 5.1 shall be reviewed on
     no less than an annual basis and may be increased by such amount as the
     Managing Director in his absolute discretion from time to time decide and
     notify to the Executive in writing.

5.3  The Executive may during the continuance of his employment be entitled to
     be paid bonuses of such amounts (if any) at such times and subject to such
     conditions as the Managing Director may in his discretion decide.

5.4  The Executive shall be entitled to be granted such share options in the
     share capital of the Company as decided by the Managing Director and/or the
     Board from time to time. The Company agrees initially to grant the
     Executive share options under the Company Scheme as set forth on the First
                                                                          -----
     Schedule. It is the intention of the Company to grant the Executive
     --------
     additional share options at a minimum of two (2) times the Executive's
     annual salary, at the earliest available opportunity under the Company
     Scheme and within the overall constraints of the rules and regulations of
     the London Stock Exchange regarding the granting of such share options. The
     Company agrees that the Executive shall be entitled to

                                       5
<PAGE>

     retain all options granted until expiry date in the event of termination of
     the employment of the Executive without good cause.

6.  INSURANCE
    ---------

6.1  Subject to his complying with and satisfying any applicable requirements of
     the relevant insurers the Company shall provide and pay for the provision
     to the Executive of comprehensive medical, dental and disability insurance
     in accordance with arrangements made between the Company and an insurance
     company mutually acceptable to the Company and the Executive. In addition,
     the Company shall provide and pay for the provision to the Executive of
     comprehensive travel, associated death and emergency medical insurance,
     including cover for emergency repatriation to the U.S.A. whilst the
     Executive is outside the U.S.A. on business at the bequest of the Company.

7.  EXPENSES
    --------

7.1  The Company shall during the continuance of his employment reimburse the
     Executive in respect of all reasonable traveling, accommodation,
     entertainment and other similar out-of-pocket expenses wholly, exclusively
     and necessarily incurred by him in or about the performance of his duties.

7.2  Except where specified to the contrary, all expenses shall be reimbursed in
     accordance with the expenses policies of the Company from time to time
     subject to the Executive providing appropriate evidence (including
     receipts, invoices, tickets and/or vouchers as may be appropriate) of the
     expenditure in respect of which he claims reimbursement.

7.3  During the continuance of his employment hereunder the Executive shall be
     paid a car allowance sufficient to enable the Executive to acquire, operate
     and maintain an automobile commensurate with the Executive's capacity which
     allowance shall accrue from day to day and be paid in arrears on the last
     day of each month, or if that is not a business day, on the immediately
     preceding business day.

8.  HOLIDAYS
    --------

8.1  The Executive shall (in addition to the usual public and bank holidays) be
     entitled during the continuance of his employment to twenty-five (25)
     working days' paid holiday in each calendar year to be taken at such times
     as shall have been approved by the Managing Director.

8.2  The Executive shall not be entitled to carry forward any annual holiday
     entitlement foregone by him for any reason during the calendar year in
     which it accrued without the prior written consent of the Managing
     Director.

                                       6
<PAGE>

8.3  Upon termination of his employment the Executive's entitlement to accrued
     holiday pay (which accrues at the rate of 2 days per month) shall be
     calculated on a pro rata basis in respect of each completed month of
     service in the calendar year in which his employment terminates and the
     appropriate amount shall be paid to the Executive provided that if the
     Executive shall have taken more days' holiday than his accrued entitlement
     the Company is hereby authorized to make an appropriate deduction from the
     Executive's final salary payment.

9.  SICKNESS
    --------

9.1  Subject to his complying with the Company's procedures relating to the
     notification and certification of periods of absence from work the
     Executive shall continue to be paid his salary during any periods of
     absence from work due to sickness, injury or other incapacity up to a
     maximum of twenty six (26) weeks in aggregate in any period of fifty two
     (52) consecutive weeks.

9.2  If the Executive shall have been absent from work due to sickness, injury
     or other incapacity for a continuous period in excess of twenty six (26)
     weeks, the Managing Director shall decide at his absolute discretion
     whether to terminate the Executive's employment, in which case the
     provisions of Clause 2.4 shall apply or continue to pay the Executive at
     fifty percent (50%) of his salary for an additional twenty six (26) weeks.
     In the event that the Executive's employment is terminated at the end of
     the additional twenty six (26) week period the provisions of Clause 2.4
     shall still apply.

10.  INTELLECTUAL PROPERTY
     ---------------------

10.1 Subject to the relevant provisions of the Patents Act 1977, the Registered
     Designs Act 1949 and the Copyright Designs and Patents Act 1988 if at any
     time in the course of his employment the Executive makes or discovers or
     participates in the making or discovery of any Intellectual Property
     relating to or capable of being used in the business of the Company or any
     Associated Company he shall immediately disclose full details of such
     Intellectual Property to the Company and at the request and expense of the
     Company he shall do all things which may be necessary or desirable for
     obtaining appropriate forms of protection for the Intellectual Property in
     such parts of the world as may be specified by the Company and for vesting
     all rights in the same in the Company or its nominees.

10.2 The Executive hereby irrevocably appoints the Company to be his attorney in
     his name and on his behalf to sign execute or do any instrument or thing
     and generally to use his name for the purpose of giving to the Company or
     its nominee the full benefit of the provisions of this Clause and in favour
     of any third party a certificate in writing signed by any director or the
     secretary of the Company that any instrument or act falls within the
     authority conferred by this Clause shall be conclusive evidence that such
     is the case.

                                       7
<PAGE>

10.3 The Executive hereby waives all of his moral rights (as defined in the
     Copyright Designs and Patents Act 1988) in respect of any acts of the
     Company or any acts of third parties done with the Company's authority in
     relation to any Intellectual Property which is the property of the Company
     by virtue of Clause 10.1.

10.4 All rights and obligations under this Clause in respect of Intellectual
     Property made or discovered by the Executive during his employment shall
     continue in full force and effect after the termination of his employment
     and shall be binding upon the Executive's personal representatives.

11.  CONFIDENTIALITY
     ---------------

11.1 The Executive shall not (other than in the proper performance of his duties
     or without the prior written consent of the Managing Director or unless
     ordered by a court of competent jurisdiction) at any time either during the
     continuance of his employment of after its termination disclose or
     communicate to any person or use for his own benefit or the benefit of any
     person other than the Company or any Associated Company any benefits of any
     confidential information which may come to his knowledge in the course of
     his employment and the Executive shall during the continuance of his
     employment use his best endeavours to prevent the unauthorized publication
     or misuse of any confidential information provided that such restrictions
     shall cease to apply to any confidential information which may enter the
     public domain other than through the default of the Executive.

11.2 All notes and memoranda of any trade secret or confidential information
     concerning the business of the Company and the Associated Companies or any
     of its or their suppliers, agents, distributors, customers or others which
     shall have been acquired, received or made by the Executive during the
     course of his employment shall be the property of the Company and shall be
     surrendered by the Executive to someone duly authorized in that behalf at
     the termination of his employment or at the request of the Managing
     Director at any time during the course of his employment.

11.3 For the avoidance of doubt and without prejudice to the generality of
     Clauses 11.1 and 11.2 the following is a non-exhaustive list of matters
     which in relation to the Company and the Associated Companies are
     considered confidential and must be treated as such by the Executive:

     (a)  any trade secrets of the Company or any Associated Company;

     (b)  any information in respect of which the Company or any Associated
          Company is bound by an obligation of confidence to any third party;

     (c)  customer lists and details of contacts with or requirements of
          customers; and

                                       8
<PAGE>

     (d)  any invention, technical data, know-how, instruction or operations
          manual or other manufacturing or trade secrets of the Group and their
          clients/customers.

12.  TERMINATION OF EMPLOYMENT
     -------------------------

12.1 The employment of the Executive may be terminated by the Company forthwith
     by notice in writing to the Executive if the Executive:

     (a)  commits any material breach of any of the terms, conditions or
          stipulations contained in this Agreement;

     (b)  is guilty of any serious negligence or gross misconduct in connection
          with or affecting the business or affairs of the Company or any
          Associated Company for which he is required to perform duties;

     (c)  is guilty of conduct which brings or is likely to bring himself or the
          Company or any Associated Company into disrepute;

     (d)  is convicted of an arrestable offence (other than an offence under the
          road traffic legislation in the United Kingdom or elsewhere for which
          a non-custodial penalty is imposed);

     (e)  is adjudged bankrupt or makes any arrangement or composition with his
          creditors; or

     (f)  becomes incapable by reason of mental disorder of discharging his
          duties.

12.2 [RESERVED]

12.3 The employment of the Executive may be terminated by the Company forthwith
     by twelve (12) months notice in writing to the Executive if the Executive
     is found unfit to perform his duties on the basis of a medical report
     supplied to the Company following his having undergone a medical
     examination pursuant to paragraph (i) of Clause 3.1.

12.4 The Executive may terminate his employment with the Company forthwith by
     notice in writing to the Company, if the Company commits any material
     breach of the terms, conditions or stipulations contained in this
     Agreement, in which case the provisions of Clause 2.4 shall still apply.

12.5 The employment of the Executive shall terminate automatically and without
     prior notice upon his attaining the age of 65.

                                       9
<PAGE>

12.6 If the Executive shall have been absent from work due to sickness, injury
     or other incapacity for periods in excess of 6 months in aggregate in any
     period of twelve consecutive months the Company may terminate his
     employment by giving to him not less than three months' notice in written
     expiring at any time.

12.7 Upon the termination of his employment (for whatever reason and howsoever
     arising) the Executive:

     (a)  shall not take away, conceal or destroy but shall immediately deliver
          up to the Company all documents (which expression shall include but
          without limitation notes, memoranda, correspondence, drawings,
          sketches, plans, designs and any other material upon which data or
          information is recorded or stored) relating to the business or affairs
          of the Company or any Associated Company or any of their
          clients/customers, shareholders, employees, officers, suppliers,
          distributors and agents (and the Executive shall not be entitled to
          retain any copies or reproductions of any such documents) together
          with any other property belonging to the Company or any Associated
          Company which may then be in his possession or under his control;

     (b)  shall at the request of the Managing Director immediately resign
          without claim or compensation from office as a director of any
          Associated Company and from any other office held by him in the
          Company or any Associated Company (but without prejudice to any claim
          he may have for damages for breach of this Agreement) and in the event
          of his failure to do so the Company is hereby irrevocably authorized
          to appoint some person in his name and on his behalf to sign and
          deliver such resignations to the Managing Director;

     (c)  shall not at any time thereafter make any untrue or misleading oral or
          written statement concerning the business and affairs of the Company
          or any Associated Company nor represent himself or permit himself to
          be held out as being in any way connected with or interested in the
          business of the Company or any Associated Company (except as a former
          employee for the purpose of communicating with prospective employers
          or complying with any applicable statutory requirements);

     (d)  shall not at any time thereafter use the name Alliance Resources or
          any name capable of confusion therewith (whether by using such names
          as part of a corporate name or otherwise); and

     (e)  shall immediately repay all outstanding debts or loans due to the
          Company or any Associated Company and the Company is hereby authorized
          to deduct from any wages of the Executive a sum equal to any such
          debts or loans.

                                       10
<PAGE>

12.8 The following provisions will apply in the event of a Change in Control:

     (a)  The Board recognizes that the Executive is one of several key
          employees whose high quality of job performance is essential to
          promoting and protecting the best interests of the Company and its
          shareholders. The Board further recognizes (i) that it is possible
          that a Change in Control of the Company could occur at some time in
          the future, (ii) that the uncertainty associated with such a
          possibility could result in the distraction of the Executive from his
          assigned duties and responsibilities, (iii) that it is in the best
          interest of the Company and its shareholders to assure the continued
          attention by the Executive to such duties and responsibilities without
          such distraction, and (iv) that the Executive must be able to
          participate in the assessment and evaluation of any proposal which
          could effect a Change in Control of the Company without the Executive
          being influenced in the exercise of his judgment by uncertainties
          regarding the Executive's future financial security.

     (b)  A "Change in Control" of the Company shall occur if, after the date of
          this Agreement

          (i)   any Unrelated Party (as hereinafter defined) becomes the
                beneficial owner, directly or indirectly, of thirty percent
                (30%) or more of the common stock of the Company issued and
                outstanding immediately prior to such acquisition and/or
                securities of the Company which may be converted into shares of
                common stock of the Company, computing such percentage as if
                such securities acquired had been converted and are issued and
                outstanding for the purpose of determining such percentage or,
                if any Unrelated Party is the beneficial owner of thirty percent
                (30%) or more of such securities at the date of this Agreement,
                such Unrelated Party acquires an additional ten percent (10%) of
                the shares of common stock of the Company and/or securities of
                the Company which may be converted into shares of common stock
                of the Company;

          (ii)  the shareholders of the Company approve (x) any consolidation or
                merger of the Company in which the Company is not the continuing
                or surviving corporation or pursuant to which shares of the
                common stock of the Company are converted into cash, securities
                or other property, other than a merger of the Company in which
                the holders of the common stock of the Company immediately prior
                to the merger have the same proportionate ownership of common
                stock of the surviving corporation immediately after the merger,
                or (y) any sale, lease, exchange or other transfer (in one
                transaction or a series of related transactions) of all, or
                substantially all, of the assets of the Company, or (z) any plan
                or proposal for the liquidation or dissolution of the Company;

                                       11
<PAGE>

          (iii) a majority of the Board ceases to consist of Continuing
                Directors. "Continuing Directors" shall mean members of the
                Board who either (1) are members of the Board at the date of
                this Agreement or (2) are nominated or appointed to serve as
                directors by a majority of the then Continuing Directors; or

          (iv)  any tender or exchange offer is made to acquire thirty percent
                (30%) or more of the common stock of the Company, other than an
                offer made by the Company, and shares are acquired pursuant to
                that offer.

     (c)  "Unrelated Party" shall mean any party or group of parties acting
          together; excluding, however, the Company, a subsidiary of the Company
          and any trustee under any employee benefit plan maintained by the
          Company.

     (d)  Upon (x) the termination of the Executive by the Company without cause
          following a Change in Control of the Company or (y) the Executive's
          voluntary termination of employment for Good Reason following a Change
          in Control of the Company prior to expiration of the then effective
          two (2) year period of employment, then the Company shall provide to
          the Executive, within thirty (30) days after the applicable event, the
          following benefits:

          (i)   in one lump sum a cash payment equal to 2.5 times (A) the
                Executive's annual salary as specified in this Agreement, and
                (B) aggregate bonuses and benefits for the preceding calendar
                year.

          (ii)  to the extent permitted by applicable law, inclusion in the
                Company's life and medical plans as if the Executive were still
                employed by the Company until the earlier of two (2) years from
                the date of his termination or until the Executive obtains
                eligibility under comparable employee plans, with the Company
                paying that portion of the premium which it was paying for the
                Executive at the time of his termination.

     (e)  Good Reason.  "Good Reason" shall mean:
          ------------

          (i)   Without his express written consent, the assignment to the
                Executive of any duties inconsistent with his positions, duties,
                responsibilities and status with the Company as of the date of
                this Agreement or a change in his titles or offices as of same
                date, or any removal of the Executive from or any failure to re-
                elect the Executive to any of such positions, except in
                connection with the termination of his employment for cause or
                as a result of his

                                       12
<PAGE>

                Disability or death, or termination by the Executive other than
                for Good Reason;

          (ii)  Any reduction of the then-existing base salary or a reduction of
                more than ten percent (10%) in the aggregate value of any
                benefit plans without the prior written consent of the
                Executive, which is not remedied within ten (10) calendar days
                after receipt by the Company of written notice from the
                Executive of such change or reduction, as the case may be;

          (iii) A determination by the Executive made in good faith that as a
                result of a Change in Control of the Company and a change in
                circumstances thereafter significantly affecting his position,
                he has been rendered substantially unable to carry out, or has
                been substantially hindered in the performance of any of the
                authorities, powers, functions, responsibilities or duties
                attached to his position immediately prior to the Change in
                Control of the Company, which situation is not remedied within
                thirty (30) calendar days after receipt by the Company of
                written notice from the Executive of such determination;

          (iv)  Failure by the Company to require any successor (whether direct
                or indirect, by purchase, merger, consolidation or otherwise) to
                all or substantially all of the business and/or assets of the
                Company, by agreement in form and substance satisfactory to the
                Executive, expressly to assume and agree to perform this
                Agreement in the same manner and to the same extent that the
                Company would be required to perform it if no such succession
                had taken place; or

          (v)   The Company shall relocate its principal executive office or
                require Executive to have his principal location of work or
                principal residence any location which is in excess of thirty
                miles from the location as of the date hereof; or

          (vi)  Any material breach of this Agreement by the Company.

12.9   The Executive shall not be required to mitigate the amount of any
       payments or benefit provided by this Agreement nor shall the amounts of
       any payment or benefit provided for by this Agreement be reduced by any
       compensation earned by the Executive as a result of employment by the
       Company or another employer either before or after a Change in Control of
       the Company.

12.10  Nothing in this Agreement shall prevent or limit the Executive's
       continuing or future participation in any benefit, bonus, incentive or
       other plan or program provided by the Company or any of its affiliated
       companies and for which the Executive may qualify, nor shall anything
       herein limit or otherwise affect such

                                       13
<PAGE>

       rights as the Executive may have under any other agreements with the
       Company or any of its affiliated companies. Amounts which are vested
       benefits or which the Executive is otherwise entitled to receive under
       any plan or program of the Company or any of its affiliated companies at
       or subsequent to the termination of employment hereunder shall be payable
       in accordance with such plan or program.

13.    NOTICES
       -------

13.1   Any notice to be given under this Agreement shall be given in writing and
       shall be deemed to be sufficiently served by one party on the other if it
       is delivered personally or is sent by registered or recorded delivery
       pre-paid post (air mail if overseas) addressed to either the Company's
       registered office for the time being or the Executive's last known
       address as the case may be.

13.2   Any notice sent by post shall be deemed (in the absence of evidence of
       earlier receipt) to be received 2 days after posting (6 days if sent air
       mail) and in proving the time such notice was sent it shall be sufficient
       to show that the envelope containing it was properly addressed stamped
       and posted.

13.3   Notwithstanding any other provision of this Agreement, no provision by
       virtue of which this Agreement or any agreement or arrangement of which
       it forms part is subject to registration under the Restrictive Trade
       Practices Act 1976 and 1977 ("RTPA") shall take effect until after
       particulars thereof have been furnished to the Director General of Fair
       Trading in accordance with the requirements of the RTPA.

14.    MISCELLANEOUS
       -------------

14.1   The Executive hereby warrants that by virtue of entering into this
       Agreement he will not be in breach of any express or implied terms of any
       contract or of any other obligation legally binding upon him.

14.2   Any benefits provided by the Company to the Executive or his family which
       are not expressly referred to in this Agreement shall be regarded as ex
       gratia benefits provided at the entire discretion of the Company and
       shall not form part of the Executive's contract of employment.

14.3   The Company shall be entitled at any time during the Executive's
       employment to make deductions from the Executive's salary or from any
       other sums due to the Executive from the Company or any Associated
       Company in respect of any overpayment of any kind made to the Executive
       or in respect of any debt or other sum due from him.

15.    GENERAL PROVISIONS
       ------------------

                                       14
<PAGE>

15.1   The headings in this Agreement are for convenience only and shall not
       affect its construction or interpretation.

15.2   References in this Agreement to Clauses and paragraphs and the Schedules
       are references to Clauses and paragraphs and the Schedules (which are
       hereby specifically incorporated in this Agreement) to this Agreement.

15.3   Any reference in this Agreement to the employment of the Executive is a
       reference to his employment by the Company whether or not during the
       currency of this Agreement.

15.4   Any reference in this Agreement to a person shall where the context
       permits include a reference to a body corporate and to any unincorporated
       body of persons.

15.5   Any word in this Agreement which denotes the singular shall where the
       context permits include the plural and vice versa and any word in this
       Agreement which denotes the masculine gender shall where the context
       permits include the feminine and/or the neuter genders and vice versa.

15.6   Any reference in this Agreement to a statutory provision shall be deemed
       to include a reference to any statutory amendment modification or re-
       enactment of it.

15.7   This Agreement contains the entire understanding between the parties and
       supersedes all (if any) subsisting agreements, arrangements and
       understandings relating to the employment of the Executive which such
       agreements, arrangements and understandings shall be deemed to have been
       terminated by mutual consent.

15.8   This Agreement is governed by and shall be construed in accordance with
       the laws of England and the parties to this Agreement hereby submit to
       the exclusive jurisdiction of the English courts.

                                       15
<PAGE>

IN WITNESS whereof this Agreement has been executed as a deed by the parties
- ----------
hereto and is intended to be and is hereby delivered on the date first above
written.

Executed as a deed by John A. Keenan (Managing Director)        }
for ALLIANCE RESOURCES PLC in the presence of:                  }
                                                                }
                                                                }

Signature
           --------------------------------
Name
           --------------------------------
Address
           --------------------------------

           --------------------------------
Occupation
           --------------------------------

Signed as a deed by                                             }
FRANCIS M. MUNCHINSKI (Executive)                               }
in the presence of:                                             }
                                                                }

Signature
           --------------------------------
Name
           --------------------------------
Address
           --------------------------------

           --------------------------------
Occupation
           --------------------------------

                                       16
<PAGE>

                              THE FIRST SCHEDULE
                              ------------------


          One hundred seventy thousand (170,000) Ordinary Options to be issued
          at the closing mid-market price of Ordinary Shares on the date of
          grant of such options.

          Three hundred fifty thousand (350,000) Long Term Options exercisable
          upon the Company's share price increasing threefold during the 5-year
          exercise period of such options.

          All options are to be issued under the Company Share Option Scheme
          (No. 2) as adopted by the Company in general meeting on 4 May 1995.

                                       17

<PAGE>

                                 Exhibit 10.4



                         DATED AS OF DECEMBER 1, 1998
                         ----------------------------


                          (1)  ALLIANCE RESOURCES PLC
                               ----------------------


                                    - and -



                            (2)  ROBERT E. SCHULTE
                                 -----------------



                                   EXECUTIVE
                                   ---------
                               SERVICE AGREEMENT
                               -----------------
<PAGE>

THIS AGREEMENT is made as of the 1st  day of December, 1998
- --------------

BETWEEN:
- --------

(1)   ALLIANCE RESOURCES PLC, a company registered in England and Wales whose
      ----------------------
      registered office is at Kingsbury House, 15-17 King Street, London SW1Y
      6QU ("the Company"), and

(2)   ROBERT E. SCHULTE of TULSA, OKLAHOMA ("the Executive")

WHEREAS

      (A)  it has been agreed that the Executive is to be employed by the
           Company; and

      (B)  it has been agreed that said employment of the Executive shall be on
           the terms and subject to the conditions hereinafter written;

NOW, THEREFORE, THE PARTIES HERETO HAVE AGREED AND DO HEREBY AGREE AS FOLLOWS:

1.    DEFINITIONS AND INTERPRETATION
      ------------------------------

1.1   In this Agreement unless the context otherwise required words and phrases
      defined in Part XXVI of the Companies Act 1985 have the same meanings
      thereby attributed to them and the following expressions have the
      following meanings:

      "Associated Company" means any company which is a holding company or a
      subsidiary of the Company or a subsidiary of the Company's holding
      company;

      "the Board" means the Board of Directors present at a meeting of the
      directors of the Company at which a quorum is present but excluding the
      Executive;

      "Group" means the Company and the Associated Companies;

      "Intellectual Property" means patent trade marks, service marks, designs,
      utility models, design rights applications for registration of any of the
      foregoing and the right to apply for them in any part of the world,
      inventions, drawings, computer programs, Confidential Information, know-
      how and rights of like nature arising or subsisting anywhere in the world
      in relation to all of the foregoing whether registered or unregistered.

                                       2
<PAGE>

2.    COMMENCEMENT AND TERM
      ---------------------

2.1   The Executive's employment began on or about September 20, 1997.

2.2   This Agreement is in substitution for and shall supersede all or any
      former and existing agreements or arrangements for the employment of the
      Executive by the Company or an Associated Company all of which shall be
      deemed to have been canceled with effect from the date of commencement of
      this Agreement.

2.3   The employment of the Executive shall (subject to the provisions of Clause
      12) be for an initial fixed period of two (2) years from January 1, 1999
      and shall automatically be extended without further action of either party
      for additional two (2) year periods, unless written notice of either
      party's intention not to extend has been given to the other party hereto
      at least three (3) months prior to the expiration of the then effective
      two (2) year period of employment.

2.4   On termination of the employment of the Executive at any time and for
      whatever reason and howsoever arising, including, but not limited to,
      termination of the employment of the Executive following his receipt of
      the notice provided in Clause 2.3, but subject to the provisions of Clause
      12, the Company shall pay to the Executive in one lump sum on the day of
      such termination, a cash payment equal to twice (a) the Executive's annual
      salary as specified in this Agreement, and (b) aggregate bonuses and
      benefits for the preceding calendar year.

3.    OBLIGATIONS DURING EMPLOYMENT
      -----------------------------

3.1   The Executive shall during the continuance of his employment:

      (a)  serve the Company to the best of his ability in the capacity of
           controller and shall perform such duties as are customary for a
           controller of comparable companies;

      (b)  faithfully and diligently perform such duties and exercise such
           powers consistent with them as the Managing Director may from time to
           time properly assign to or confer upon him;

      (c)  if and so long as the Managing Director so directs perform and
           exercise the said duties and powers on behalf of any Associated
           Company and act as a director or other officer of any Associated
           Company;

      (d)  do all in his power to protect, promote, develop and extend the
           business interests and reputation of the Group;

      (e)  at all times and in all respects conform to and comply with the
           business interests and reputation of the Group;

                                       3
<PAGE>

      (f)  promptly give to the Managing Director (in writing if so requested)
           all such information, explanations and assistance as he may require
           in connection with the business and affairs of the Company and any
           Associated Company for which he is required to perform duties;

      (g)  unless prevented by sickness, injury or other incapacity or as
           otherwise agreed by the Managing Director devote the whole of his
           time, attention, and abilities during his hours or work (which shall
           be normal business hours and such additional hours as may be
           necessary for the proper performance of his duties) to the business
           and affairs of the Company and any Associated Company for which he is
           required to perform duties;

      (h)  work at such place of business of the Company or any Associated
           Company within the United Kingdom and/or the United States as
           necessary for the proper performance and exercise of his duties and
           powers and in particular it is agreed that the Executive shall remain
           domiciled and receive payment for services rendered hereunder in the
           United States; and the Executive may be required to travel on the
           business of the Company and any Associated company (whether inside or
           outside the United Kingdom) for which he is required to perform
           duties; and

      (i)  at such times as the Managing Director may reasonably request and at
           the expense of the Company undergo a medical examination by a doctor
           of the Company's choice.

3.2   Notwithstanding the foregoing or any other provision of the Agreement, the
      Company may at any time after the Executive has given notice to terminate
      this Agreement suspend the Executive and/or exclude him from all or any
      premises of the Company or any Associated Company for any period not
      exceeding (12) months provided that throughout such period the Executive's
      salary and other contractual benefits shall continue to be paid or
      provided by the Company.

4.    FURTHER OBLIGATIONS OF THE EXECUTIVE
      ------------------------------------

4.1   During the continuance of his employment the Executive shall devote his
      whole time and attention to his duties under this Agreement and shall not
      without the prior written consent of the Managing Director (such consent
      not to be unreasonably withheld or delayed) directly or indirectly carry
      on or be engaged, concerned or interested in any other business trade or
      occupation which is similar to or in competition with the business of the
      Company or any Associated Company otherwise than as a holder directly or
      through nominees of not more than five per cent in aggregated of any class
      of shares debentures or other securities in issue from time to time of any
      company which are for the time being quoted or dealt in on any recognized
      investment exchange (as defined by Section 207(1) of the Financial
      Services Act 1986).

                                       4
<PAGE>

4.2   The Executive shall during the continuance of his employment (and shall
      procure that his spouse or partner and his minor children shall comply)
      with all applicable rules of law, and stock exchange regulations
      (including the "Model Code" issued by the International Stock Exchange of
      the United Kingdom and the Republic of Ireland Limited) and codes of
      conduct of the Company for the time being in force in relation to dealings
      in shares, debentures or other securities of the Company or any Associated
      Company or any unpublished price sensitive information affecting the
      securities of any other company.

4.3   The Executive shall in relation to any dealings in securities of overseas
      companies comply with all laws of any foreign state affecting dealings in
      the securities of such companies and all regulations of any relevant stock
      exchanges on which such dealings take place.

4.4   During the continuance of his employment the Executive shall observe the
      terms of any policy issued by the Company in relation to any payment,
      rebate, discount, commission, vouchers, gift or other benefit obtained by
      him from any third party in respect of any business transacted or proposed
      to be transacted (whether or not by him) by or on behalf of the Company or
      any Associated Company.

5.    REMUNERATION
      ------------

5.1   The Company shall pay to the Executive during the continuance of his
      employment a salary (which shall accrue from day to day) at the rate of
      One Hundred Thousand U.S. Dollars (U.S. $100,000) per year. The salary
      shall be payable by equal bi-monthly installments in arrears on or about
      the 15th and 30th day of each calendar month.

5.2   The salary payable to the Executive under Clause 5.1 shall be reviewed on
      no less than an annual basis and may be increased by such amount as the
      Managing Director in his absolute discretion from time to time decide and
      notify to the Executive in writing.

5.3   The Executive may during the continuance of his employment be entitled to
      be paid bonuses of such amounts (if any) at such times and subject to such
      conditions as the Managing Director may in his discretion decide.

5.4   The Executive shall be entitled to be granted such share options in the
      share capital of the Company as decided by the Managing Director and/or
      the Board from time to time. The Company agrees initially to grant the
      Executive share options under the Company Scheme as set forth on the First
                                                                           -----
      Schedule. It is the intention of the Company to grant the Executive
      --------
      additional share options at a minimum of two (2) times the Executive's
      annual salary, at the earliest available opportunity under the Company
      Scheme and within the overall constraints of the rules and regulations of
      the London Stock Exchange regarding the granting of such share options.
      The Company agrees that the Executive shall be entitled to

                                       5
<PAGE>

      retain all options granted until expiry date in the event of termination
      of the employment of the Executive without good cause.

6.    INSURANCE
      ---------

6.1   Subject to his complying with and satisfying any applicable requirements
      of the relevant insurers the Company shall provide and pay for the
      provision to the Executive of comprehensive medical, dental and disability
      insurance in accordance with arrangements made between the Company and an
      insurance company mutually acceptable to the Company and the Executive. In
      addition, the Company shall provide and pay for the provision to the
      Executive of comprehensive travel, associated death and emergency medical
      insurance, including cover for emergency repatriation to the U.S.A. whilst
      the Executive is outside the U.S.A. on business at the bequest of the
      Company.

7.    EXPENSES
      --------

7.1   The Company shall during the continuance of his employment reimburse the
      Executive in respect of all reasonable traveling, accommodation,
      entertainment and other similar out-of-pocket expenses wholly, exclusively
      and necessarily incurred by him in or about the performance of his duties.

7.2   Except where specified to the contrary, all expenses shall be reimbursed
      in accordance with the expenses policies of the Company from time to time
      subject to the Executive providing appropriate evidence (including
      receipts, invoices, tickets and/or vouchers as may be appropriate) of the
      expenditure in respect of which he claims reimbursement.

7.3   During the continuance of his employment hereunder the Executive shall be
      paid a car allowance sufficient to enable the Executive to acquire,
      operate and maintain an automobile commensurate with the Executive's
      capacity which allowance shall accrue from day to day and be paid in
      arrears on the last day of each month, or if that is not a business day,
      on the immediately preceding business day.

8.    HOLIDAYS
      --------

8.1   The Executive shall (in addition to the usual public and bank holidays) be
      entitled during the continuance of his employment to twenty-five (25)
      working days' paid holiday in each calendar year to be taken at such times
      as shall have been approved by the Managing Director.

8.2   The Executive shall not be entitled to carry forward any annual holiday
      entitlement foregone by him for any reason during the calendar year in
      which it accrued without the prior written consent of the Managing
      Director.

                                       6
<PAGE>

8.3   Upon termination of his employment the Executive's entitlement to accrued
      holiday pay (which accrues at the rate of 2 days per month) shall be
      calculated on a pro rata basis in respect of each completed month of
      service in the calendar year in which his employment terminates and the
      appropriate amount shall be paid to the Executive provided that if the
      Executive shall have taken more days' holiday than his accrued entitlement
      the Company is hereby authorized to make an appropriate deduction from the
      Executive's final salary payment.

9.    SICKNESS
      --------

9.1   Subject to his complying with the Company's procedures relating to the
      notification and certification of periods of absence from work the
      Executive shall continue to be paid his salary during any periods of
      absence from work due to sickness, injury or other incapacity up to a
      maximum of twenty six (26) weeks in aggregate in any period of fifty two
      (52) consecutive weeks.

9.2   If the Executive shall have been absent from work due to sickness, injury
      or other incapacity for a continuous period in excess of twenty six (26)
      weeks, the Managing Director shall decide at his absolute discretion
      whether to terminate the Executive's employment, in which case the
      provisions of Clause 2.4 shall apply or continue to pay the Executive at
      fifty percent (50%) of his salary for an additional twenty six (26) weeks.
      In the event that the Executive's employment is terminated at the end of
      the additional twenty six (26) week period the provisions of Clause 2.4
      shall still apply.

10.   INTELLECTUAL PROPERTY
      ---------------------

10.1  Subject to the relevant provisions of the Patents Act 1977, the Registered
      Designs Act 1949 and the Copyright Designs and Patents Act 1988 if at any
      time in the course of his employment the Executive makes or discovers or
      participates in the making or discovery of any Intellectual Property
      relating to or capable of being used in the business of the Company or any
      Associated Company he shall immediately disclose full details of such
      Intellectual Property to the Company and at the request and expense of the
      Company he shall do all things which may be necessary or desirable for
      obtaining appropriate forms of protection for the Intellectual Property in
      such parts of the world as may be specified by the Company and for vesting
      all rights in the same in the Company or its nominees.

10.2  The Executive hereby irrevocably appoints the Company to be his attorney
      in his name and on his behalf to sign execute or do any instrument or
      thing and generally to use his name for the purpose of giving to the
      Company or its nominee the full benefit of the provisions of this Clause
      and in favour of any third party a certificate in writing signed by any
      director or the secretary of the Company that any instrument or act falls
      within the authority conferred by this Clause shall be conclusive evidence
      that such is the case.

                                       7
<PAGE>

10.3  The Executive hereby waives all of his moral rights (as defined in the
      Copyright Designs and Patents Act 1988) in respect of any acts of the
      Company or any acts of third parties done with the Company's authority in
      relation to any Intellectual Property which is the property of the Company
      by virtue of Clause 10.1.

10.4  All rights and obligations under this Clause in respect of Intellectual
      Property made or discovered by the Executive during his employment shall
      continue in full force and effect after the termination of his employment
      and shall be binding upon the Executive's personal representatives.

11.   CONFIDENTIALITY
      ---------------

11.1  The Executive shall not (other than in the proper performance of his
      duties or without the prior written consent of the Managing Director or
      unless ordered by a court of competent jurisdiction) at any time either
      during the continuance of his employment of after its termination disclose
      or communicate to any person or use for his own benefit or the benefit of
      any person other than the Company or any Associated Company any benefits
      of any confidential information which may come to his knowledge in the
      course of his employment and the Executive shall during the continuance of
      his employment use his best endeavours to prevent the unauthorized
      publication or misuse of any confidential information provided that such
      restrictions shall cease to apply to any confidential information which
      may enter the public domain other than through the default of the
      Executive.

11.2  All notes and memoranda of any trade secret or confidential information
      concerning the business of the Company and the Associated Companies or any
      of its or their suppliers, agents, distributors, customers or others which
      shall have been acquired, received or made by the Executive during the
      course of his employment shall be the property of the Company and shall be
      surrendered by the Executive to someone duly authorized in that behalf at
      the termination of his employment or at the request of the Managing
      Director at any time during the course of his employment.

11.3  For the avoidance of doubt and without prejudice to the generality of
      Clauses 11.1 and 11.2 the following is a non-exhaustive list of matters
      which in relation to the Company and the Associated Companies are
      considered confidential and must be treated as such by the Executive:

      (a)  any trade secrets of the Company or any Associated Company;

      (b)  any information in respect of which the Company or any Associated
           Company is bound by an obligation of confidence to any third party;

      (c)  customer lists and details of contacts with or requirements of
           customers; and

                                       8
<PAGE>

      (d)  any invention, technical data, know-how, instruction or operations
           manual or other manufacturing or trade secrets of the Group and their
           clients/customers.

12.   TERMINATION OF EMPLOYMENT
      -------------------------

12.1  The employment of the Executive may be terminated by the Company forthwith
      by notice in writing to the Executive if the Executive:

      (a)  commits any material breach of any of the terms, conditions or
           stipulations contained in this Agreement;

      (b)  is guilty of any serious negligence or gross misconduct in connection
           with or affecting the business or affairs of the Company or any
           Associated Company for which he is required to perform duties;

      (c)  is guilty of conduct which brings or is likely to bring himself or
           the Company or any Associated Company into disrepute;

      (d)  is convicted of an arrestable offence (other than an offence under
           the road traffic legislation in the United Kingdom or elsewhere for
           which a non-custodial penalty is imposed);

      (e)  is adjudged bankrupt or makes any arrangement or composition with his
           creditors; or

      (f)  becomes incapable by reason of mental disorder of discharging his
           duties.


12.2  [RESERVED]

12.3  The employment of the Executive may be terminated by the Company forthwith
      by twelve (12) months notice in writing to the Executive if the Executive
      is found unfit to perform his duties on the basis of a medical report
      supplied to the Company following his having undergone a medical
      examination pursuant to paragraph (i) of Clause 3.1.

12.4  The Executive may terminate his employment with the Company forthwith by
      notice in writing to the Company, if the Company commits any material
      breach of the terms, conditions or stipulations contained in this
      Agreement, in which case the provisions of Clause 2.4 shall still apply.

12.5  The employment of the Executive shall terminate automatically and without
      prior notice upon his attaining the age of 65.

                                       9
<PAGE>

12.6  If the Executive shall have been absent from work due to sickness, injury
      or other incapacity for periods in excess of 6 months in aggregate in any
      period of twelve consecutive months the Company may terminate his
      employment by giving to him not less than three months' notice in written
      expiring at any time.

12.7  Upon the termination of his employment (for whatever reason and howsoever
      arising) the Executive:

      (a)  shall not take away, conceal or destroy but shall immediately deliver
           up to the Company all documents (which expression shall include but
           without limitation notes, memoranda, correspondence, drawings,
           sketches, plans, designs and any other material upon which data or
           information is recorded or stored) relating to the business or
           affairs of the Company or any Associated Company or any of their
           clients/customers, shareholders, employees, officers, suppliers,
           distributors and agents (and the Executive shall not be entitled to
           retain any copies or reproductions of any such documents) together
           with any other property belonging to the Company or any Associated
           Company which may then be in his possession or under his control;

      (b)  shall at the request of the Managing Director immediately resign
           without claim or compensation from office as a director of any
           Associated Company and from any other office held by him the in
           Company or any Associated Company (but without prejudice to any claim
           he may have for damages for breach of this Agreement) and in the
           event of his failure to do so the Company is hereby irrevocably
           authorized to appoint some person in his name and on his behalf to
           sign and deliver such resignations to the Managing Director;

      (c)  shall not at any time thereafter make any untrue or misleading oral
           or written statement concerning the business and affairs of the
           Company or any Associated Company nor represent himself or permit
           himself to be held out as being in any way connected with or
           interested in the business of the Company or any Associated Company
           (except as a former employee for the purpose of communicating with
           prospective employers or complying with any applicable statutory
           requirements);

      (d)  shall not at any time thereafter use the name Alliance Resources or
           any name capable of confusion therewith (whether by using such names
           as part of a corporate name or otherwise); and

      (e)  shall immediately repay all outstanding debts or loans due to the
           Company or any Associated Company and the Company is hereby
           authorized to deduct from any wages of the Executive a sum equal to
           any such debts or loans.

                                       10
<PAGE>

12.8  The following provisions will apply in the event of a Change in Control:

      (a)  The Board recognizes that the Executive is one of several key
           employees whose high quality of job performance is essential to
           promoting and protecting the best interests of the Company and its
           shareholders. The Board further recognizes (i) that it is possible
           that a Change in Control of the Company could occur at some time in
           the future, (ii) that the uncertainty associated with such a
           possibility could result in the distraction of the Executive from his
           assigned duties and responsibilities, (iii) that it is in the best
           interest of the Company and its shareholders to assure the continued
           attention by the Executive to such duties and responsibilities
           without such distraction, and (iv) that the Executive must be able to
           participate in the assessment and evaluation of any proposal which
           could effect a Change in Control of the Company without the Executive
           being influenced in the exercise of his judgment by uncertainties
           regarding the Executive's future financial security.

      (b)  A "Change in Control" of the Company shall occur if, after the date
           of this Agreement

           (i)   any Unrelated Party (as hereinafter defined) becomes the
                 beneficial owner, directly or indirectly, of thirty percent
                 (30%) or more of the common stock of the Company issued and
                 outstanding immediately prior to such acquisition and/or
                 securities of the Company which may be converted into shares of
                 common stock of the Company, computing such percentage as if
                 such securities acquired had been converted and are issued and
                 outstanding for the purpose of determining such percentage or,
                 if any Unrelated Party is the beneficial owner of thirty
                 percent (30%) or more of such securities at the date of this
                 Agreement, such Unrelated Party acquires an additional ten
                 percent (10%) of the shares of common stock of the Company
                 and/or securities of the Company which may be converted into
                 shares of common stock of the Company;

           (ii)  the shareholders of the Company approve (x) any consolidation
                 or merger of the Company in which the Company is not the
                 continuing or surviving corporation or pursuant to which shares
                 of the common stock of the Company are converted into cash,
                 securities or other property, other than a merger of the
                 Company in which the holders of the common stock of the Company
                 immediately prior to the merger have the same proportionate
                 ownership of common stock of the surviving corporation
                 immediately after the merger, or (y) any sale, lease, exchange
                 or other transfer (in one transaction or a series of related
                 transactions) of all, or substantially all, of the assets of
                 the Company, or (z) any plan or proposal for the liquidation or
                 dissolution of the Company;

                                       11
<PAGE>

           (iii) a majority of the Board ceases to consist of Continuing
                 Directors. "Continuing Directors" shall mean members of the
                 Board who either (1) are members of the Board at the date of
                 this Agreement or (2) are nominated or appointed to serve as
                 directors by a majority of the then Continuing Directors; or

           (iv)  any tender or exchange offer is made to acquire thirty percent
                 (30%) or more of the common stock of the Company, other than an
                 offer made by the Company, and shares are acquired pursuant to
                 that offer.

      (c)  "Unrelated Party" shall mean any party or group of parties acting
           together; excluding, however, the Company, a subsidiary of the
           Company and any trustee under any employee benefit plan maintained by
           the Company.

      (d)  Upon (x) the termination of the Executive by the Company without
           cause following a Change in Control of the Company or (y) the
           Executive's voluntary termination of employment for Good Reason
           following a Change in Control of the Company prior to expiration of
           the then effective two (2) year period of employment, then the
           Company shall provide to the Executive, within thirty (30) days after
           the applicable event, the following benefits:

           (i)   in one lump sum a cash payment equal to 2.5 times (A) the
                 Executive's annual salary as specified in this Agreement, and
                 (B) aggregate bonuses and benefits for the preceding calendar
                 year.

           (ii)  to the extent permitted by applicable law, inclusion in the
                 Company's life and medical plans as if the Executive were still
                 employed by the Company until the earlier of two (2) years from
                 the date of his termination or until the Executive obtains
                 eligibility under comparable employee plans, with the Company
                 paying that portion of the premium which it was paying for the
                 Executive at the time of his termination.

      (e)  Good Reason.  "Good Reason" shall mean:
           ------------

           (i)   Without his express written consent, the assignment to the
                 Executive of any duties inconsistent with his positions,
                 duties, responsibilities and status with the Company as of the
                 date of this Agreement or a change in his titles or offices as
                 of same date, or any removal of the Executive from or any
                 failure to re-elect the Executive to any of such positions,
                 except in connection with the termination of his employment for
                 cause or as a result of his

                                       12
<PAGE>

                 Disability or death, or termination by the Executive other than
                 for Good Reason;

           (ii)  Any reduction of the then-existing base salary or a reduction
                 of more than ten percent (10%) in the aggregate value of any
                 benefit plans without the prior written consent of the
                 Executive, which is not remedied within ten (10) calendar days
                 after receipt by the Company of written notice from the
                 Executive of such change or reduction, as the case may be;

           (iii) A determination by the Executive made in good faith that as a
                 result of a Change in Control of the Company and a change in
                 circumstances thereafter significantly affecting his position,
                 he has been rendered substantially unable to carry out, or has
                 been substantially hindered in the performance of any of the
                 authorities, powers, functions, responsibilities or duties
                 attached to his position immediately prior to the Change in
                 Control of the Company, which situation is not remedied within
                 thirty (30) calendar days after receipt by the Company of
                 written notice from the Executive of such determination;

           (iv)  Failure by the Company to require any successor (whether direct
                 or indirect, by purchase, merger, consolidation or otherwise)
                 to all or substantially all of the business and/or assets of
                 the Company, by agreement in form and substance satisfactory to
                 the Executive, expressly to assume and agree to perform this
                 Agreement in the same manner and to the same extent that the
                 Company would be required to perform it if no such succession
                 had taken place; or

           (v)   The Company shall relocate its principal executive office or
                 require Executive to have his principal location of work or
                 principal residence any location which is in excess of thirty
                 miles from the location as of the date hereof; or

           (vi)  Any material breach of this Agreement by the Company.

12.9  The Executive shall not be required to mitigate the amount of any payments
      or benefit provided by this Agreement nor shall the amounts of any payment
      or benefit provided for by this Agreement be reduced by any compensation
      earned by the Executive as a result of employment by the Company or
      another employer either before or after a Change in Control of the
      Company.

12.10 Nothing in this Agreement shall prevent or limit the Executive's
      continuing or future participation in any benefit, bonus, incentive or
      other plan or program provided by the Company or any of its affiliated
      companies and for which the Executive may qualify, nor shall anything
      herein limit or otherwise affect such

                                       13
<PAGE>

      rights as the Executive may have under any other agreements with the
      Company or any of its affiliated companies. Amounts which are vested
      benefits or which the Executive is otherwise entitled to receive under any
      plan or program of the Company or any of its affiliated companies at or
      subsequent to the termination of employment hereunder shall be payable in
      accordance with such plan or program.

13.   NOTICES
      -------

13.1  Any notice to be given under this Agreement shall be given in writing and
      shall be deemed to be sufficiently served by one party on the other if it
      is delivered personally or is sent by registered or recorded delivery pre-
      paid post (air mail if overseas) addressed to either the Company's
      registered office for the time being or the Executive's last known address
      as the case may be.

13.2  Any notice sent by post shall be deemed (in the absence of evidence of
      earlier receipt) to be received 2 days after posting (6 days if sent air
      mail) and in proving the time such notice was sent it shall be sufficient
      to show that the envelope containing it was properly addressed stamped and
      posted.

13.3  Notwithstanding any other provision of this Agreement, no provision by
      virtue of which this Agreement or any agreement or arrangement of which it
      forms part is subject to registration under the Restrictive Trade
      Practices Act 1976 and 1977 ("RTPA") shall take effect until after
      particulars thereof have been furnished to the Director General of Fair
      Trading in accordance with the requirements of the RTPA.

14.   MISCELLANEOUS
      -------------

14.1  The Executive hereby warrants that by virtue of entering into this
      Agreement he will not be in breach of any express or implied terms of any
      contract or of any other obligation legally binding upon him.

14.2  Any benefits provided by the Company to the Executive or his family which
      are not expressly referred to in this Agreement shall be regarded as ex
      gratia benefits provided at the entire discretion of the Company and shall
      not form part of the Executive's contract of employment.

14.3  The Company shall be entitled at any time during the Executive's
      employment to make deductions from the Executive's salary or from any
      other sums due to the Executive from the Company or any Associated Company
      in respect of any overpayment of any kind made to the Executive or in
      respect of any debt or other sum due from him.

15.   GENERAL PROVISIONS
      ------------------

                                       14
<PAGE>

15.1  The headings in this Agreement are for convenience only and shall not
      affect its construction or interpretation.

15.2  References in this Agreement to Clauses and paragraphs and the Schedules
      are references to Clauses and paragraphs and the Schedules (which are
      hereby specifically incorporated in this Agreement) to this Agreement.

15.3  Any reference in this Agreement to the employment of the Executive is a
      reference to his employment by the Company whether or not during the
      currency of this Agreement.

15.4  Any reference in this Agreement to a person shall where the context
      permits include a reference to a body corporate and to any unincorporated
      body of persons.

15.5  Any word in this Agreement which denotes the singular shall where the
      context permits include the plural and vice versa and any word in this
      Agreement which denotes the masculine gender shall where the context
      permits include the feminine and/or the neuter genders and vice versa.

15.6  Any reference in this Agreement to a statutory provision shall be deemed
      to include a reference to any statutory amendment modification or re-
      enactment of it.

15.7  This Agreement contains the entire understanding between the parties and
      supersedes all (if any) subsisting agreements, arrangements and
      understandings relating to the employment of the Executive which such
      agreements, arrangements and understandings shall be deemed to have been
      terminated by mutual consent.

15.8  This Agreement is governed by and shall be construed in accordance with
      the laws of England and the parties to this Agreement hereby submit to the
      exclusive jurisdiction of the English courts.

                                       15
<PAGE>

IN WITNESS whereof this Agreement has been executed as a deed by the parties
- ----------
hereto and is intended to be and is hereby delivered on the date first above
written.

Executed as a deed by John A. Keenan (Managing Director)        }
for ALLIANCE RESOURCES PLC in the presence of:                  }
                                                                }
                                                                }

Signature
           ------------------------------
Name
           ------------------------------
Address
           ------------------------------

           ------------------------------
Occupation
           ------------------------------



Signed as a deed by                                             }
ROBERT E. SCHULTE (Executive)                                   }
in the presence of:                                             }
                                                                }

Signature
           ------------------------------
Name
           ------------------------------
Address
           ------------------------------

           ------------------------------
Occupation
           ------------------------------

                                       16
<PAGE>

THE FIRST SCHEDULE
- ------------------

Eighty-five thousand (85,000) Ordinary Options to be issued at the closing mid-
market price of Ordinary Shares on the date of grant of such options.

Two hundred thousand (200,000) Long Term Options exercisable upon the Company's
share price increasing threefold during the 5-year exercise period of such
options.

All options are to be issued under the Company Share Option Scheme (No. 2) as
adopted by the Company in general meeting on 4 May 1995.

                                       17

<PAGE>

                                  Exhibit 10.6

                     FIRST AMENDMENT TO PURCHASE AGREEMENT

     THIS FIRST AMENDMENT TO PURCHASE AGREEMENT (this "Amendment") is made as of
the 30/th/ day of July, 1999 among Alliance Resources PLC, a public limited
company organized under the laws of England and Wales (the "Company"), and EnCap
Equity 1996 Limited Partnership, a Texas limited partnership ("EnCap LP"), and
Energy Capital Investment Company PLC, an English investment company ("ECIC")
(with EnCap LP and ECIC sometimes being herein collectively called "Buyer").

                              W I T N E S S E T H:

     WHEREAS, the Company, EnCap LP and ECIC entered into that certain Purchase
Agreement dated as of October 27, 1998 (the "Original Agreement") for the
purposes and consideration therein expressed, pursuant to which Buyer purchased
the Securities; and

     WHEREAS, the Company, EnCap LP and ECIC desire to amend the Original
Agreement to reflect certain changes in the ownership of the capital stock of
certain Subsidiaries of the Company, with the result being that Difco is the
owner of all of the outstanding capital stock of Alliance Resources (Delaware),
Inc., a newly formed Delaware corporation, which in turn is the owner of all of
the outstanding capital stock of Alliance Group and LRI;

     NOW, THEREFORE, in consideration of the premises and the mutual covenants
and agreements contained herein and in the Original Agreement, and for other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto do hereby agree as follows:

                    ARTICLE I. -- Definitions and References
                                  --------------------------

     (S) 1.1.  Terms Defined in the Original Agreement.  Unless the context
               ---------------------------------------
otherwise requires or unless otherwise expressly defined herein, the terms
defined in the Original Agreement shall have the same meanings whenever used in
this Amendment.

     (S) 1.2.  Other Defined Terms.  Unless the context otherwise requires, the
               -------------------
following terms when used in this Amendment shall have the meanings assigned to
them in this (S) 1.2.

          "Amendment" means this First Amendment to Purchase Agreement.
           ---------

          "Amendment Documents" means this Amendment, the Consent and Agreement
           -------------------
     of Subsidiary Guarantors attached hereto, the Subsidiary Guaranty of even
     date herewith by Alliance Resources (Delaware), Inc. in favor of EnCap LP
     and ECIC and the other documents to be delivered pursuant to Section
     3.1(c).

          "Purchase Agreement" means the Original Agreement as amended hereby.
           ------------------

                                       1
<PAGE>

                ARTICLE II. -- Amendments to Original Agreement
                               --------------------------------

     (S) 2.1.  Defined Terms.  The definitions of "Change of Control", "Key
               -------------
Employment Agreements", "Senior Credit Facility" and "Subsidiary Guarantors" set
forth in Section 1.1 of the Original Agreement are hereby amended in their
entirety to read as follows:

          "Change of Control"  means the occurrence of any of the following
     events: (a) any Person or two or more Persons, other than Buyer or any
     affiliate of Buyer, acting as a group shall acquire beneficial ownership
     (within the meaning of Rule 13d-3 of the Securities and Exchange Commission
     under the Exchange Act, and including holding proxies to vote for the
     election of directors other than proxies held by the Company's management
     or their designees to be voted in favor of persons nominated by the
     Company's Board of Directors) of 33% or more of the outstanding voting
     securities of the Company, measured by voting power (including both
     ordinary shares and any preferred stock or other equity securities
     entitling the holders thereof to vote with the holders of common stock in
     elections for directors of the Company), exclusive of the issuance of
     ordinary shares contemplated under this Agreement, (b) the Company shall
     fail beneficially to own 100% of the outstanding shares of voting capital
     stock of Manx or Difco on a fully-diluted basis, (c) Difco shall fail
     beneficially to own 100% of the outstanding shares of voting capital stock
     of Alliance Delaware on a fully-diluted basis, (d) Alliance Delaware shall
     fail beneficially to own 100 % of the outstanding shares of voting capital
     stock of Alliance Group and LRI on a fully-diluted basis, (e) LRI shall
     fail beneficially to own 100% of the outstanding shares of the voting
     capital stock of LPC, GOCA, New GOC or Enpro, on a fully-diluted basis, (f)
     Alliance Group shall fail beneficially to own 100% of the outstanding
     shares of the voting capital stock of Source, ARNO, ARCOL or Alliance USA,
     (g) one-third or more of the directors of the Company shall consist of
     persons not nominated by the Company's Board of Directors (not including as
     Board nominees any directors which the Board is obligated to nominate
     pursuant to shareholders agreements, voting trust arrangements or similar
     arrangements) or (h) within three years of the Closing Date, the employment
     by the Company of John Keenan or Paul Fenemore terminates for any reason.

          "Key Employment Agreements" means (i) that certain Executive Service
     Agreement dated October 5, 1996 between the Company and John A. Keenan, as
     amended by Supplemental Agreement dated October 15, 1996 and Second
     Supplemental Agreement dated December 1, 1998, and (ii) that certain
     Service Agreement dated September 20, 1996 between the Company and Paul
     Raymond Fenemore, as amended by Supplemental Agreement dated September 20,
     1996 and Second Supplemental Agreement dated December 1, 1998.

          "Senior Credit Facility" means that certain Third Amended and Restated
     Credit Agreement dated October 27, 1998 by and among the Company, Alliance
     USA, GOCA, LPC, New GOC and Source and Bank of America National Trust and
     Savings Association, as amended by that certain First Amendment to Third
     Amended and Restated Credit Agreement dated July 30, 1999.

                                       2
<PAGE>

          "Subsidiary Guarantors" means Difco, Alliance Delaware, Alliance
     Group, Alliance USA, Source, LRI, LPC, GOCA, New GOC and Enpro.

     Section 1.1 of the Original Agreement is hereby amended by adding a new
definition of "Alliance Delaware" immediately following the definition of
"affiliate", to read as follows:

          "Alliance Delaware" means Alliance Resources (Delaware), Inc., a
     Delaware corporation.

     (S) 2.2   Consent to Changes in Stock Ownership.  Buyer hereby consents to
               -------------------------------------
the changes in stock ownership among the Company and certain of its
Subsidiaries, whereby Difco became the owner of all of the outstanding capital
stock of Alliance Resources (Delaware), Inc., a newly formed Delaware
corporation, which in turn became the owner of all of the outstanding capital
stock of Alliance Group and LRI, and waives any Default or Event of Default
under Sections 10.9, 11.3, 11.5 or 11.6 of the Purchase Agreement caused
thereby.

     (S) 2.3   Consent to Amendment of Senior Credit Facility.  Buyer hereby
               ----------------------------------------------
consents to an amendment to the Senior Credit Facility of even date herewith,
substantially in the form of the final draft furnished to Buyer.

     (S) 2.4   Waiver re: Untimely Delivery of Financial Information.  The
               -----------------------------------------------------
Company previously failed to timely deliver certain financial information in
respect of the Fiscal Quarters ended October 31, 1998 and January 31, 1999, as
required in Section 10.2 (b) of the Purchase Agreement.  Buyer hereby confirms
that such information, for such periods, was subsequently delivered to Buyer,
and Buyer hereby waives such failure to timely deliver such information and any
Default related thereto.

     (S) 2.5   Buyer Acknowledgment and Agreement re: East Irish Sea Asset Write
               -----------------------------------------------------------------
Down.  As a result of an SEC ceiling test calculation, the Company is required
- ----
to write down the cost of the East Irish Sea Assets to approximately $2.5
million for U.S. financial reporting purposes, with such write down being
recognized in the Fiscal Year ended April 30, 1999 (the "Required Write Down").
Buyer hereby acknowledges and agrees that the Required Write Down does not, in
and of itself, constitute a Material Adverse Effect.

                  ARTICLE III. -- Conditions of Effectiveness
                                  ---------------------------

     (S) 3.1.  Effective Date.  This Amendment shall become effective as of the
               --------------
date first above written when and only when the Company will deliver the
following documents to Buyer:

          (a) This Amendment, duly executed by the Company and each Subsidiary
     Guarantor.

          (b) The Subsidiary Guarantee of Alliance Delaware, duly executed by
     Alliance Delaware.

          (c) Certified copy of a written consent or resolutions of the Board of
     Directors of the Company and the Subsidiary Guarantors authorizing the
     execution, delivery and

                                       3
<PAGE>

     performance by the Company and the Subsidiary Guarantors of this Amendment
     and the Amendment Documents, as necessary.

          (d) An Omnibus Certificate, substantially in the form of the omnibus
     certificates delivered by the Company and Subsidiary Guarantors at Closing,
     with respect to Alliance Delaware, with attached accurate and complete
     copies of Alliance Delaware's Organic Documents, the consent or resolutions
     described in clause (c) above, and indicating the incumbency and specimen
     signatures of officers executing the Amendment and Ancillary Documents on
     behalf of Alliance Delaware.

          (e) Certificate of existence and good standing with respect to
     Alliance Delaware, dated within a number of days prior to the date hereof
     reasonably acceptable to Buyer.

          (f) Such other certificates, instruments, and documents as may be
     reasonably requested by Buyer prior to the date hereof to carry out the
     intent and purposes of this Amendment.

                 ARTICLE IV. -- Representations and Warranties
                                ------------------------------

     (S) 4.1.  Representations and Warranties of the Company.  To confirm
               ---------------------------------------------
Buyer's understanding concerning the Company's and its Subsidiaries' businesses,
properties and obligations, and to induce Buyer to enter into this Amendment,
the Company represents and warrants to Buyer that:

          (a) (i)  All the representations and warranties of the Company and its
     Subsidiaries contained in the Purchase Agreement and Ancillary Documents
     are true and correct in all material respects on and as of the date hereof
     as if made on and as of such date, except as affected by transactions
     permitted thereby, and except to the extent that any such representation or
     warranty is made as of a specified date, in which case such representation
     or warranty shall have been true and correct in all material respects as of
     such specified date (for the sole purpose of determining whether or not any
     of such representations and warranties are true and correct as aforesaid on
     and as of the date hereof, no effect shall be given to any materiality
     qualification contained in such representation or warranty), (ii) the
     Company and its Subsidiaries have performed and complied with in all
     material respects all covenants and agreements contained in the Purchase
     Agreement and Ancillary Documents, and (iii) no Default or Event of Default
     has occurred.

          (b) The Company and each Subsidiary Guarantor has full power and
     authority to execute and deliver the Amendment Documents and to perform
     their obligations thereunder, to the extent a party thereto, and to
     consummate the transactions contemplated hereby and thereby.  The
     execution, delivery, and performance by the Company and each Subsidiary
     Guarantor of the Amendment Documents, to the extent a party thereto, and
     the consummation by it of the transactions contemplated hereby and thereby,
     have been duly authorized by all necessary actions of the Company and each
     Subsidiary Guarantor.  The Amendment Documents have been duly executed and

                                       4
<PAGE>

     delivered by the Company and each Subsidiary Guarantor, to the extent a
     party thereto, and constitute, a valid and legally binding obligation of
     the Company and each Subsidiary Guarantor, enforceable against the Company
     and each Subsidiary Guarantor in accordance with their respective terms,
     except that such enforceability may be limited by (i) applicable
     bankruptcy, insolvency, reorganization, moratorium, and similar laws
     affecting creditors' rights generally and (ii) equitable principles which
     may limit the availability of certain equitable remedies (such as specific
     performance) in certain instances.

          (c) The execution, delivery and performance of the Amendment Documents
     by the Company and each Subsidiary Guarantor, to the extent a party
     thereto, and the consummation by them of the transactions contemplated
     hereby and thereby do not and will not (a) violate or conflict with the
     Organic Documents of the Company or any Subsidiary, (b) conflict with or
     result in any violation of any provision of, or constitute (with or without
     the giving of notice or the passage of time or both) a default under, or
     give rise (with or without the giving of notice or the passage of time or
     both) to any right of termination, cancellation, or acceleration under, or
     require any consent, approval, authorization or waiver of, or notice to,
     any party to, any bond, debenture, note, mortgage, indenture, lease,
     contract, agreement, or other instrument or obligation to which the Company
     or any Subsidiary is a party or by which the Company or any Subsidiary or
     any of their respective properties may be bound or any Permit held by the
     Company or any Subsidiary, (iii) result in the creation or imposition of
     any Lien upon the properties of the Company or any Subsidiary (other than
     as provided in the Senior Credit Facility) or (iv) violate any Applicable
     Law binding upon the Company or any Subsidiary.

          (d) No consent, approval, authorization, license, order or permit of,
     or declaration, filing or registration with, or notification to, any
     Governmental Entity, or any other Person or entity, is required to be made
     or obtained by the Company or any Subsidiary in connection with the
     execution, delivery and performance of the Amendment Documents and the
     consummation of the transactions contemplated hereby and thereby.

                          ARTICLE V. -- Miscellaneous
                                        -------------

     (S) 5.1.  Ratification of Agreements.  The Original Agreement as hereby
               --------------------------
amended is hereby ratified and confirmed in all respects.  The Purchase
Agreement and Ancillary Documents, as they may be amended or affected by the
various Amendment Documents, are hereby ratified and confirmed in all respects.
Any reference to the Purchase Agreement in any Ancillary Document shall be
deemed to refer to this Amendment also, and any reference in the Purchase
Agreement or any Ancillary Document to any other document or instrument amended,
renewed, extended or otherwise affected by any Amendment Document shall also
refer to such Amendment Document. The execution, delivery and effectiveness of
this Amendment and the other Amendment Documents shall not, except as expressly
provided herein or therein, operate as a waiver of any right, power or remedy of
Buyer under the Purchase Agreement or any Ancillary Document nor constitute a
waiver of any provision of the Purchase Agreement or any Ancillary Document.

                                       5
<PAGE>

     (S) 5.2.  Survival of Agreements.  All representations, warranties,
               ----------------------
covenants and agreements of the Company herein shall survive the execution and
delivery of this Amendment and the performance hereof, and shall further survive
until all of the Obligations are paid in full. All statements and agreements
contained in any certificate or instrument delivered by the Company or any
Subsidiary Guarantor hereunder or under the Purchase Agreement to Buyer shall be
deemed to constitute representations and warranties by, or agreements and
covenants of, the Company under this Amendment and under the Purchase Agreement.

     (S) 5.3.  Ancillary Documents.  This Amendment and the other Amendment
               -------------------
Documents are each an Ancillary Document, and all provisions in the Purchase
Agreement pertaining to Ancillary Documents apply hereto and thereto.

     (S) 5.4.  Governing Law.  THIS AMENDMENT SHALL BE GOVERNED BY AND CONSTRUED
               -------------
AND ENFORCED IN ACCORDANCE WITH THE LAWS OF ENGLAND AND WALES, WITHOUT REGARD TO
THE PRINCIPLES OF CONFLICTS OF LAWS THEREOF.

     (S) 5.5.  Entire Agreement. This Agreement, together with the Schedules and
               ----------------
other writings referred to herein or delivered pursuant hereto, constitute the
entire agreement between the parties hereto with respect to the subject matter
hereof and supersede all prior agreements and understandings, both written and
oral, between the parties with respect to the subject matter hereof.

     (S) 5.6.  Counterparts.  This Amendment may be separately executed in
               ------------
counterparts and by the different parties hereto in separate counterparts, each
of which when so executed shall be deemed to constitute one and the same
Amendment.

     IN WITNESS WHEREOF, this Amendment is executed as of the date first above
written.

                         ENCAP EQUITY 1996 LIMITED PARTNERSHIP

                         By:  ENCAP INVESTMENTS L.C., General Partner

                         By:  -----------------------------------------------
                              Gary R. Peterson, Managing Director


                         ENERGY CAPITAL INVESTMENT COMPANY PLC

                         By:  -----------------------------------------------
                              Gary R. Peterson, Director


                         ALLIANCE RESOURCES PLC

                         By:  -----------------------------------------------
                              Francis M. Munchinski, Authorized Signatory

                                       6
<PAGE>

                             CONSENT AND AGREEMENT

     The undersigned hereby (i) consents to the execution and delivery of (a)
that certain First Amendment to Purchase Agreement (the "Amendment") by and
among Alliance Resources PLC, a public limited company organized under the laws
of England and Wales (the "Company"), and EnCap Equity 1996 Limited Partnership,
a Texas limited partnership ("EnCap LP"), and Energy Capital Investment Company
PLC, an English investment company ("ECIC") (with EnCap LP and ECIC sometimes
being herein collectively called "Buyer"), amending the Purchase Agreement (as
defined in the Amendment), and (b) the other documents and instruments executed
in connection therewith, including without limitation the execution and delivery
of the other Amendment Documents, and to the provisions and transactions
contemplated therein, and (ii) ratifies and confirms that its Subsidiary
Guarantee and any other security or other documents, agreements or instruments
(collectively, the "Security Documents") delivered by it to Buyer in connection
with the Purchase  Agreement or any transaction contemplated therein and agree
that all of its respective obligations and covenants thereunder (to the extent
it is a party thereto) shall remain unimpaired by the execution and delivery of
the Amendment and the other documents and instruments executed in connection
therewith and that the Security Documents to which it is a party shall remain in
full force and effect.

     IN WITNESS WHEREOF, this Consent and Agreement is executed by the
undersigned as of July 30, 1999.

                              DIFCO LIMITED

                              By:---------------------------------------------
                                    Francis M. Munchinski
                                    Authorized Signatory

                              ALLIANCE RESOURCES GROUP, INC.
                              ALLIANCE RESOURCES (USA), INC.
                              SOURCE PETROLEUM, INC.
                              LATEX RESOURCES, INC.
                              LATEX PETROLEUM CORPORATION
                              LATEX/GOC ACQUISITION, INC.
                              GERMANY OIL COMPANY
                              ENPRO, INC.
                              ALLIANCE RESOURCES (DELAWARE), INC.

                              By:---------------------------------------------
                                    Francis M. Munchinski, Vice President

                                       7

<PAGE>

                                 Exhibit 10.9

                                FIRST AMENDMENT
                                      TO
                  THIRD AMENDED AND RESTATED CREDIT AGREEMENT
                  -------------------------------------------


     This First Amendment to Third Amended and Restated Credit Agreement (this

"Amendment") is entered into and effective as of the 30th day of July, 1999, by
- ----------
and among BANK OF AMERICA, N.A. (formerly known as Bank of America National
Trust and Savings Association) in its individual capacity as the sole Lender

("Lender") and as Agent for the Lenders ("Agent"), and LATEX PETROLEUM
- --------                                  -----
CORPORATION, LATEX/GOC ACQUISITION, INC., GERMANY OIL COMPANY, ALLIANCE
RESOURCES (USA), INC., SOURCE PETROLEUM, INC. and ALLIANCE RESOURCES PLC
(individually, a "Borrower," and collectively, "Borrowers").
                  --------                      ---------

                              W I T N E S S E T H:
                              -------------------

     WHEREAS, Lender, Agent and Borrowers are parties to that certain Third
Amended and Restated Credit Agreement dated as of October 26, 1998 pursuant to
which Lender has made certain loans and provided certain other credit
accommodations to Borrowers (the "Credit Agreement") (unless otherwise defined
                                  ----------------
herein, all defined terms used herein which are defined in the Credit Agreement
shall have the meanings assigned to such terms in the Credit Agreement); and

     WHEREAS, Borrowers have requested that the Credit Agreement be amended to
(a) increase the Tranche B Commitment Amount to $25,000,000, (b) decrease the
Tranche A Commitment Amount to $25,000,000 and (c) reflect certain changes in
the ownership of the capital stock of certain Subsidiaries of Alliance Plc; and

     WHEREAS, subject to and upon the terms and conditions set forth herein,
Lender and Agent are willing to enter into the amendments and grant the waivers
Borrowers have requested.

     NOW, THEREFORE,  in consideration of the agreements herein contained, the
parties hereto hereby agree as follows:

     SECTION 1.     Amendments.  Subject to and upon the terms and conditions
                    ----------
set forth herein, the Credit Agreement is hereby amended as follows:

     1.1  Additional Definitions.  Section 1.1 of the Agreement is hereby
          ----------------------
amended to add thereto definitions of "Alliance Delaware,""El Paso," "First
                                       -----------------   -------    -----
Amendment," and "Participation Agreement" which shall read in full as follows:
- ---------        -----------------------

     "Alliance Delaware" means Alliance Resources (Delaware), Inc., a Delaware
      -----------------
corporation and the sole shareholder of Alliance Group and LRI.

                                       1
<PAGE>

     "El Paso" means El Paso Capital Investments, L.L.C., a Delaware
      -------
corporation.

     "First Amendment" means that certain First Amendment to Credit Agreement
      ---------------
dated as of July 30, 1999 by and among Borrowers, Lenders and Agent.

     "Participation Agreement" means a Participation Agreement dated as of July
      -----------------------
30, 1999 by and between Bank of America and El Paso.

     1.2  Amendment to Existing Defined Terms.  The definitions of "Agreement,"
          -----------------------------------                       ---------
"Alliance Group," "Alliance Plc," "Change of Control," "Guaranties,"
 --------------    ------------    -----------------    ----------
"Guarantors," "Pledge Agreements," "Security Agreements," "Stated Maturity
 ----------    -----------------    -------------------    ---------------
Date," "Tranche A Commitment Amount," "Tranche B Availability Termination Date"
        ---------------------------    ---------------------------------------
and "Tranche B Commitment Amount" contained in Section 1.1 of the Credit
     ---------------------------
Agreement are hereby amended to read in full as follows:

     "Agreement" means on any date, this Third Amended and Restated Credit
      ---------
Agreement as amended by the First Amendment and as subsequently amended,
supplemented, amended and restated, or otherwise modified and in effect on such
date.

     "Alliance Group" means Alliance Resources Group, Inc., a Delaware
      --------------
corporation and the sole shareholder of each of the Alliance U.S. Subsidiaries.

     "Alliance Plc" is defined in the Preamble and is the sole shareholder of
      ------------                    --------
Manx and Difco.

     "Change in Control" means if (a) any Person or "group" (as defined in the
      -----------------
Securities Exchange Act of 1934) other than (i) John A. Keenan, (ii) Difco
Holders, (iii) any trust existing solely for the benefit of the above
individuals or the estate or any executor, administrator, conservator, or other
legal representative of any of the above individuals, or (iv) EnCap shall own
directly or directly greater than 33 1/3% of the issued and outstanding voting
share capital of Alliance Plc, (b) Alliance Plc shall fail beneficially to own
100% of the outstanding shares of the voting capital stock of Manx or Difco, on
a fully-diluted basis, (c) Difco shall fail beneficially to own 100% of the
outstanding shares of the voting capital stock of Alliance Delaware, on a fully-
diluted basis, (d) Alliance Delaware shall fail beneficially to own 100% of the
outstanding shares of the voting capital stock of LRI or Alliance Group, on a
fully-diluted basis, (e) LRI shall fail beneficially to own 100% of the
outstanding shares of the voting capital stock of LPC, GOCA, New GOC or ENPRO,
on a fully-diluted basis, (f) Alliance Group shall fail beneficially to own 100%
of the outstanding shares of the voting capital stock of Source, ARNO, ARCOL or
Alliance USA, on a fully-diluted basis, or (g) during the period from the date
of one annual general meeting, of Alliance Plc to the next annual meeting,
beginning with the 1998 annual general meeting individuals who at the beginning
of such period were members of the Board of Directors of Alliance Plc shall
cease for any reason to constitute a majority of the members of the Board of
Directors of Alliance Plc.

     "Guaranties" means the guaranties of the Obligations executed and delivered
      ----------
pursuant to Sections 6.1.4 and 6.2.7 of this Agreement or Section 7.3 of the
            --------------     -----                      ------------
First Amendment, substantially in the form of Exhibit D-2, given by each of LRI,
                                              -----------
ENPRO, Alliance Group, and Alliance Delaware and substantially in the form of

Exhibit D-1, given by Difco.
- -----------

                                       2
<PAGE>

     "Guarantors" means Alliance Group, LRI, ENPRO, Difco and Alliance Delaware.
      ----------

     "Pledge Agreements" means a Pledge Agreement executed and delivered
      -----------------
pursuant to Section 6.1.5 and 6.2.8 of this Agreement or Section 7.4 of the
            -------------     -----                      -----------
First Amendment, substantially in the form of Exhibit F-3 given by each of LRI,
                                              -----------
Alliance Group and Alliance Delaware, and substantially in the form of Exhibit
                                                                       -------
F-2 given by Alliance Plc and Difco or such other form as may be appropriate in
- ---
a jurisdiction other than the US, or a state thereof, and in each case, as
amended, supplemented, restated or otherwise modified from time to time.

     "Security Agreement" means a security agreement and any similar instrument
      ------------------
or agreement, executed or delivered pursuant to Sections 6.1.7 and 6.2.6 of this
                                                --------------     -----
Agreement or Section 7.5 of the First Amendment substantially in the form of
             -----------
Exhibit C-1 hereto, or such other form as may be appropriate in a jurisdiction
- -----------
other than the U.S. or a state thereof, and in each case as amended,
supplemented, restated or otherwise modified from time to time.

     "Stated Maturity Date" means (i) with respect to the Tranche A Loans, the
      --------------------
date that is three (3) years after the Tranche A Availability Termination Date,
(ii) with respect to Tranche B Loans July 31, 2001; and (iii) with respect to
Tranche C Loans, October 30, 2004.

     "Tranche A Commitment Amount" means the lesser of (i) $25,000,000 as
      ---------------------------
reduced from time to time pursuant to the provisions of Section 2.2, and (ii)
                                                        -----------
the Borrowing Base.

     "Tranche B Availability Termination Date" means July 31, 2001.
      ---------------------------------------

     "Tranche B Commitment Amount" means $25,000,000 as reduced from time to
      ---------------------------
time pursuant to the provisions of Section 2.2.

     1.3  Amendment to General Commitment.  The second sentence of Section 2.1
          -------------------------------                          -----------
shall be amended to read in full as follows:

     On the terms and subject to the conditions hereof, the Borrowers may, from
     time to time, borrow and prepay Tranche A Loans and Tranche B Loans, but
     may not borrow or reborrow Tranche B Loans after July 30, 1999 and may not
     reborrow any amounts paid or repaid in respect of Tranche C Loans.

     1.4  Amendment to Tranche B Commitment.  Section 2.1.2 of the Credit
          ---------------------------------   -------------
Agreement is hereby amended (a) to restate clause (x) thereof to read in full
"July 30, 1999", and (b) to  insert the following sentences at the end of such
Section:

     Without limiting the foregoing, on the effective date of the First
     Amendment, but subject to the satisfaction of all conditions precedent to
     the effectiveness of such amendment set forth therein, Lenders will make
     Tranche B Loans to Borrowers in an aggregate amount of $5,000,000;
     provided, that, notwithstanding Section 11.11.2 hereof Lenders shall only
                                     ---------------
     be obligated to make such Loans on such date if prior thereto El Paso has
     purchased for $5,000,000 a participation interest in Tranche B Loans
     pursuant to the Participation Agreement; and provided, further, that
                                                  --------  -------
     notwithstanding the provisions of Section 2.7(b), such Tranche B Loans may
                                       --------------

                                       3
<PAGE>

     be used by Borrower for general corporate and working capital purposes in
     addition to Approved Development Activities in respect of the East Irish
     Sea Assets.  Unless and until El Paso purchases such participation
     interest, Lenders shall have no obligation hereunder or under any other
     Loan Document to make Tranche B Loans which would result in the aggregate
     outstanding principal balance of all Tranche B Loans exceeding $20,000,000.

     1.5  Amendment to Optional Commitment Termination Provisions.  Section
          -------------------------------------------------------   -------
2.2.1 of the Credit Agreement is hereby amended to read in full as follows:
- -----

          Section 2.2.1.  Optional.  The Borrowers may, from time to time on any
                          --------
          Business Day, voluntarily reduce the Commitments in the following
          order:  first, the Tranche A Commitment Amount and when the Tranche A
          Commitment has been reduced to zero, then the Tranche B Commitment
          Amount and, when the Tranche B Commitment has been reduced to zero,
          then the Tranche C Commitment Amount; provided, however, that all such
                                                --------  -------
          reductions shall require at least three (3) Business Days' prior
          notice to the Agent and be permanent, and any partial reduction of the
          Commitment Amount shall be in a minimum amount of $250,000 and in an
          integral multiple of $50,000.

     1.6  Amendment to Optional Prepayment Provisions.  Clause (i) of Section
          -------------------------------------------                 -------
3.1.1(a) of the Credit Agreement is hereby amended to read in full as follows:
- --------

          (i) any such prepayment shall be made (A) first to Tranche A Loans
          until all Tranche A Loans have been paid in full, (B) second to
          Tranche B Loans until all Tranche B Loans have been paid in full, and
          (C) then to Tranche C Loans.

     1.7  Amendment to ORRI Provision.  Section 3.5(b) of the Credit Agreement
          ---------------------------
is hereby deleted.

     SECTION 2.     Deferral of July 31, 1999 Scheduled Redetermination of the
                    ----------------------------------------------------------
Borrowing Base and Collateral Value.  The redetermination of the Borrowing Base
- -----------------------------------
and Collateral Value scheduled to occur on July 31, 1999 pursuant to Section
                                                                     -------
2.6(a) of the Credit Agreement shall be deferred until December 31, 1999.
- ------

     SECTION 3.     Certain Acknowledgments of Borrowers.  Each Borrower
                    ------------------------------------
acknowledges and agrees that as of the date hereof (a) the Borrowing Base is
$18,500,000, (b) the aggregate amount of all Tranche A Loans outstanding and all
Letter of Credit Outstandings is $18,500,000 (i) the amount available to be
drawn under the Tranche A Commitment is zero (0), (c) the Tranche B Commitment
is $25,000,000, (d) the aggregate principal amount of all Tranche B Loans
outstanding is $20,000,000, (e) the aggregate amount available to be drawn under
the Tranche B Commitment is $5,000,000 (provided, that the availability of such
Tranche B Commitment is subject to El Paso's purchase of a participation
interest in the Loans in a corresponding amount and Borrowers' satisfaction of
all other conditions precedent to the

                                       4
<PAGE>

availability of Tranche B Loans under the Credit Agreement and the other Loan
Documents), (f) the Tranche C Commitment is $5,000,000, (g) the aggregate
outstanding principal amount of all Tranche C Loans is $5,000,000, and (h) the
aggregate amount available to be drawn under the Tranche C Commitment is zero
(0).

     SECTION 4.     Certain Acknowledgment of Guarantors.  By executing the
                    ------------------------------------
acknowledgment to this Amendment, each Guarantor hereby confirms and agrees that
the Guaranty and each Security Document to which it is a party is, and shall
continue to be, in full force and effect and is hereby ratified and confirmed in
all respects, except that, on and after the date hereof, each reference therein
to the "Credit Agreement," "thereunder," "thereof" or words of like import
referring to the Credit Agreement, shall mean and refer to the Credit Agreement
after giving effect to this Amendment.

     SECTION 5.     Releases.  Each Borrower hereby releases, and each other
                    --------
Obligor by executing its acknowledgment hereto hereby releases Agent, Lender and
their respective officers, directors, shareholders, agents, employees,
attorneys, Affiliates and representatives (collectively, the "Released Parties")
from all claims, liabilities, looses, damages or demands whether liquidated or
unliquidated, actual or contingent, now known, unknown or unforeseen
(hereinafter, collectively, the "Claims") which any Borrower or any Obligor may
hold which in anyway arise out of, or relate to, the Commitments, the Loans, the
Credit Agreement, the Loan Documents, or any transaction contemplated thereby or
which in anyway arise out of or relate to any prior credit facility provided by
Lender, any of its predecessors or any of their Affiliates to any Borrower or
any other Obligor, any of their predecessors or any of their Affiliates (any
"Prior Credit Facility").  Without limiting the foregoing, the claims released
herein expressly include any claims arising out of, or alleged to arise out of
(a) the application for or the negotiation of the terms of the Loans, the Loan
Documents or any Prior Credit Facility, (b) the administration by Lender of the
Commitments, the Loans, the Loan Documents and any Prior Credit Facility, or (c)
the contracting for charging, taking, reserving, collecting or receiving
interest in excess of the highest lawful rate applicable thereto.

     SECTION 6.     Representations and Warranties.  In order to induce Agent
                    ------------------------------
and Lender to enter into the amendments to the Credit Agreement contained in

Section 1, Borrowers hereby represent and warrant to Lender and Agent as
- ---------
follows:

     6.1  Reaffirmation of Representations and Warranties.  After giving effect
          -----------------------------------------------
to the amendments contained in Section 1 hereof and certain waivers contained in
                               ---------
a letter agreement of even date herewith by and among Agent, Lender and
Borrowers (the "Waiver Letter"), each representation and warranty of Borrowers
                -------------
contained in the Credit Agreement and the other Loan Documents is true and
correct.

     6.2  Due Authorization, No Conflicts.  The execution, delivery and
          -------------------------------
performance by each Borrower of this Amendment and the Waiver Letter are within
each Borrower's corporate powers, have been duly authorized by all necessary
corporate action, require no action by or in respect of, or filing with, any
governmental body, agency or official and do not violate or constitute a default
under any provision of application law or any material agreement binding upon
any Borrower or any of its Subsidiaries or result in the creation or imposition
of any Lien upon any of its respective assets.

                                       5
<PAGE>

     6.3  Validity and Binding Effect.  This Amendment and the Waiver Letter
          ---------------------------
constitute the valid and binding obligations of each Borrower enforceable in
accordance with its terms, except as (a) the enforceability thereof may be
limited by bankruptcy, insolvency or similar laws affecting creditor's rights
generally, and (b) the availability of equitable remedies may be limited by
equitable principles of general application.

     6.4  No Defenses.  Neither any Borrower nor any other Obligor has any
          -----------
defense to payment, counterclaim or right of set-off with respect to the
Obligations existing on the date hereof.

     SECTION 7.     Conditions to Effectiveness.
                    ---------------------------

     7.1  Effective Date.  This amendments contained in Section 1 hereof shall
          --------------                                ---------
be effective on July 30, 1999, when each of the conditions set forth in this

Section 7 have been satisfied.
- ---------

     7.2  Resolutions, etc.  The Agent and Lender shall have received from each
          -----------------
Borrower, LRI, Alliance Group, Alliance Delaware, ENPRO, Difco and any other
Obligor a certificate of the Secretary of Assistant Secretary of such Obligor as
to:

          (a) resolutions of the Board of Directors of such Obligor then in full
     force and effect authorizing the execution, delivery and performance of
     this Amendment and the Waiver Letter and each other Loan Document, as
     applicable, to be executed by it pursuant hereto;

          (b) the incumbency and signatures of those of its officers or Persons
     authorized to act with respect to this Amendment, and the Waiver Letter and
     each other Loan Document, as applicable, executed by it pursuant hereto;

          (c) with respect to Alliance Delaware only, the Organic Documents of
     such Obligor; and

          (d) with respect to Alliance Delaware only, evidence that such Obligor
     is in good standing under Applicable Laws of the jurisdiction of its
     organization,

upon which certificate the Agent may conclusively rely until it shall have
received a further certificate of the Secretary of such Obligor canceling or
amending such prior certificate.

     7.3  Guaranty.  The Agent shall have received executed counterparts of a
          --------
Guaranty, dated as of the date hereof, in form, substance and scope satisfactory
to the Agent, duly executed by Alliance Delaware.

     7.4  Pledge Agreements.  The Agent shall have received executed
          -----------------
counterparts of Pledge Agreements or amendments of Pledge Agreements previously
delivered under the Credit Agreement, dated as of the date hereof, in form,
substance and scope satisfactory to the Agent, duly executed by (i) Alliance Plc
pledging its interest in the capital stock of Manx and Difco, (ii Difco pledging
its interest in the capital stock of Alliance Delaware, and (iii) Alliance
Delaware pledging its interest in the capital stock of Alliance Group and LRI,
together with the

                                       6
<PAGE>

certificates, evidencing all of the issued and outstanding shares of capital
stock pledged pursuant to such pledge agreement or amendment, which certificates
shall in each case be accompanied by undated stock powers duly executed in
blank, or, if any securities pledged pursuant to such pledge agreement are
uncertificated securities, confirmation and evidence satisfactory to the Agent
that the security interest in such uncertificated securities has been
transferred to and perfected by the Agent in accordance with Section 8-313 and
Section 8-321 of the Uniform Commercial Code, as in effect in the State of
Illinois, and as applicable, with the evidence of completion (or satisfactory
arrangement for the completion) of all filings and recording of such pledge
agreements as may be necessary, or in the reasonable opinion of the Agent,
desirable, effectively to create a valid, perfected first priority lien against
and security interest in the collateral covered thereby.

     7.5  Security Agreements.  The Agent shall have received from Alliance Plc,
          -------------------
Alliance Delaware and Difco duly executed, original counterparts of Security
Agreements, or amendments of Security Agreements previously delivered under the
Credit Agreement, in form, substance and scope satisfactory to the Agent,
together with:

          (a) executed copies of Uniform Commercial Code financing statements
     (Form UCC-1), in proper form for filing, naming the Borrowers (or their
     Subsidiaries, as applicable) as the debtor and the Agent as the secured
     party, or other similar instruments or documents, filed (or satisfactory
     arrangements for the completion of all filings and recordings) under the
     Uniform Commercial Code in all jurisdictions as may be necessary or, in the
     opinion of the Agent, desirable, effectively to create valid, perfected
     first priority liens against and security interests in the collateral
     covered thereby; and

          (b) executed copies of proper Uniform Commercial Code Form UCC-3
     termination statements, if any, necessary to release all Liens and other
     rights of any Person in any collateral described in such Security Agreement
     together with such other Uniform Commercial Code Form UCC-3 termination
     statements as the Lender may reasonable request from the Borrowers.

     7.6  Stock Transfer Agreement.  The Agent shall have received and approved
          ------------------------
a true, correct and complete copy of the documents evidencing the transfer of
all of the outstanding shares of voting capital stock of Alliance Group and LRI
from Alliance Plc to Alliance Delaware.

     7.7  Amendment to EnCap Purchase Agreement.  The Agent shall have received
          -------------------------------------
and approved a true, correct and complete copy of the documents under which the
Purchase Agreement dated as of October 27, 1998 among Alliance Plc, EnCap Equity
1996 Limited Partnership and Energy Capital Investment Company PLC is being
amended to reflect the same changes in the ownership of the capital stock of
certain Subsidiaries of Alliance Plc as are more particularly described in the
Waiver Letter.

     7.8  Execution of Counterparts.  The Agent shall have received counterparts
          -------------------------
of this Amendment duly executed and delivered on behalf of each Obligor, the
Agent and the Lenders.

                                       7
<PAGE>

     7.9  Closing Fees, Expenses, etc.  The Agent shall have received all fees
          ----------------------------
and all reasonable costs and expenses due and payable pursuant to Sections 3.3
                                                                  ------------
and 11.3 of the Credit Agreement, if then invoiced, including, without
    ----
limitation, all fees and expenses of counsel to Agent incurred by Agent in
connection with the preparation, negotiation, execution and closing of this
Amendment and the Waiver Letter.

     7.1  Legal Details, etc.  All documents executed or submitted pursuant
          ------------------
hereto, and all legal matters incident thereto, shall be satisfactory in form
and substance to the Agent and its counsel.

     7.1  July 31 Interest Payment.  All interest on the Loans which has accrued
          ------------------------
or shall accrue through July 31, 1999 shall be paid in full.

     7.1  Termination Date.  If all of the conditions set forth in Section 7
          ----------------                                         ---------
hereof shall not have been satisfied on or prior to 5:00 p.m. Dallas, Texas
time, July 30, 1999, the agreements of the parties contained in this Amendment
and the Waiver Letter shall, unless otherwise agreed by the Agent, terminate
effective immediately at such time and without further action.

     SECTION 8.     Miscellaneous.
                    -------------

     8.1  Reaffirmation of Loan Documents; Extension of Liens.  Any and all of
          ---------------------------------------------------
the terms and provisions of the Credit Agreement and the Loan Documents shall,
except as amended and modified hereby, remain in full force and effect.  Each
Borrower hereby ratifies, confirms and extends the Liens securing the
Obligations until the Obligations have been paid in full or are specifically
released by Agent prior thereto, and agrees that the amendments and
modifications herein contained shall in no manner adversely affect or impair the
Obligations or the Liens securing payment and performance thereof.

     8.2  Parties in Interest.  All of the terms and provisions of this
          -------------------
Amendment shall bind and inure to the benefit of the parties hereto and their
respective successors and assigns.

     8.3  Legal Expenses.  Borrowers hereby agree to pay on the date hereof all
          --------------
reasonable fees and expenses of counsel to Agent incurred by Agent, in
connection with the preparation, negotiation and execution of this Amendment and
all related documents.

     8.4  Counterparts.  This Amendment may be executed in counterparts, and all
          ------------
parties need not execute the same counterpart.  Facsimiles shall be effective as
originals.

     8.5  Complete Agreement.  THIS AMENDMENT, THE CREDIT AGREEMENT (AS AMENDED
          ------------------
PURSUANT TO THIS AMENDMENT) AND THE OTHER LOAN DOCUMENTS REPRESENT THE FINAL
AGREEMENT AMONG THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES.  THERE ARE NO
UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

                                       8
<PAGE>

     8.6  Headings.  The headings, captions and arrangements used in this
          --------
Amendment are, unless specified otherwise, for convenience only and shall not be
deemed to limit, amplify or modify the terms of this Amendment, nor affect the
meaning thereof.

                                       9
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have cause this Amendment to be
executed by their respective officers hereunto duly authorized as of the day and
first year above written.

                              BORROWERS:
                              ----------

                              LATEX PETROLEUM CORPORATION


                              By:
                                 -----------------------------------------------
                              Title:
                                    --------------------------------------------


                              LATEX/GOC ACQUISITION, INC.


                              By:
                                 -----------------------------------------------
                              Title:
                                    --------------------------------------------


                              GERMANY OIL COMPANY


                              By:
                                 -----------------------------------------------
                              Title:
                                    --------------------------------------------


                              ALLIANCE RESOURCES (USA), INC.


                              By:
                                 -----------------------------------------------
                              Title:
                                    --------------------------------------------


                              SOURCE PETROLEUM, INC.


                              By:
                                 -----------------------------------------------
                              Title:
                                    --------------------------------------------


                              ALLIANCE RESOURCES PLC


                              By:
                                 -----------------------------------------------
                              Title:
                                    --------------------------------------------

                                       10
<PAGE>

                              AGENT:
                              -----

                              BANK OF AMERICA, N.A., FORMERLY
                              BANK OF AMERICA NATIONAL TRUST
                              AND SAVINGS ASSOCIATION, as Agent for
                              the Lenders



                              By:
                                 -----------------------------------------------
                                   Title:
                                         ---------------------------------------


                              LENDERS:
                              -------

                              BANK OF AMERICA, N.A., FORMERLY
                              KNOWN AS  BANK OF AMERICA
                              NATIONAL TRUST AND SAVINGS
                              ASSOCIATION


                              By:
                                 -----------------------------------------------
                                   Title:
                                         ---------------------------------------


Acknowledged and Accepted:

LATEX RESOURCES, INC.


By:
   ---------------------------
   Name:
   Title:


ENPRO, INC.



By:
   ---------------------------
   Name:
   Title:

                                       11
<PAGE>

ALLIANCE RESOURCES (DELAWARE), INC.



By:
   --------------------
   Name:
   Title:


ALLIANCE RESOURCES GROUP, INC.



By:
   --------------------
   Name:
   Title:


DIFCO LIMITED



By:
   --------------------
   Name:
   Title:

                                       12

<PAGE>

                                 Exhibit 10.12



                         EXCHANGE AND MERGER AGREEMENT
                                 BY AND AMONG


                         AMERICAN RIVERS OIL COMPANY,
                            a Wyoming corporation,

                         AMERICAN RIVERS OIL COMPANY,
                            a Delaware corporation,

                                      AND

                            ALLIANCE RESOURCES PLC



                                   * * * * *

                             DATED: JULY 22, 1999
<PAGE>

                               TABLE OF CONTENTS
                               -----------------

                                                                         Page
                                                                         ----

1.  Definitions...........................................................  1

2.  The Exchange Offer and Merger.........................................  5
           2.1.   Filings by AROC.........................................  5
           2.2.   Filings by Alliance.....................................  6
           2.3.   Solicitation of Offer...................................  7
           2.4.   Solicitation of The Merger..............................  7

3.  Mailing Date Actions and Completion of the Merger.....................  7
           3.1.   Mailing Date............................................  7
           3.2.   The Merger..............................................  9

4.  Representations, Warranties and Covenants of AROC..................... 12
           4.1.   Corporate Organization.................................. 12
           4.2.   Capitalization.......................................... 12
           4.3.   Authority; No Violation................................. 13
           4.4.   Consents and Approvals.................................. 14
           4.5.   Violations of Laws, Permits, etc........................ 14
           4.6.   AROC Reports............................................ 14
           4.7.   AROC Financial Statements............................... 14
           4.8.   No Undisclosed Liabilities, etc......................... 14
           4.9.   Absence of Certain Changes.............................. 15
           4.10.  Data Regarding the AROC Assets.......................... 15
           4.11.  Litigation.............................................. 15
           4.12.  Tax Returns and Payments................................ 16
           4.13.  Bank Accounts........................................... 16
           4.14.  Contracts............................................... 16
           4.15.  Compensation and Employee Plans......................... 17
           4.16.  Brokers, Finders and Advisors........................... 17
           4.17.  Labor Force............................................. 17
           4.18.  Books and Records....................................... 17
           4.19.  Payments................................................ 18
           4.20.  Commission Filings...................................... 18
           4.21.  Disclosure.............................................. 18

5.  Representations, Warranties and Covenants of Alliance................. 18
           5.1.   Organization, etc....................................... 18
           5.2.   Capitalization.......................................... 19
           5.3.   Authority; No Violation................................. 19
           5.4.   Consents and Approvals.................................. 20
           5.5.   Violations of Laws, Permits, etc........................ 20
           5.6.   Alliance Reports........................................ 20
           5.7.   Alliance Financial Statements........................... 20

                                       i
<PAGE>

           5.8.   No Undisclosed Liabilities, etc......................... 21
           5.9.   Absence of Certain Changes.............................. 21
           5.10.  Data Regarding the Alliance Assets...................... 21
           5.11.  Litigation.............................................. 21
           5.12.  Tax Returns and Payments................................ 22
           5.13.  Contracts............................................... 22
           5.14.  Compensation and Employee Plans......................... 23
           5.15.  Brokers, Finders and Advisors........................... 23
           5.16.  Labor Force............................................. 23
           5.17.  Books and Records....................................... 23
           5.18.  Payments................................................ 23
           5.19.  Commission Filings...................................... 24
           5.20.  Disclosure.............................................. 24

6.  Actions of AROC Prior to the Mailing Date............................. 24
           6.1.   Affirmative Covenants................................... 24
           6.2.   Negative Covenants...................................... 24
           6.3.   Consents................................................ 24
           6.4.   Advice of Changes....................................... 24
           6.5.   Best Efforts............................................ 25
           6.6.   Access to Properties and Records........................ 25
           6.7.   Supply Documents, Reports, etc.......................... 25
           6.8.   AROC Disclosure Schedule................................ 25

7.  Actions of Alliance Prior to the Mailing Date......................... 25
           7.1.   Affirmative Covenants................................... 25
           7.2.   Negative Covenants...................................... 26
           7.3.   Consents................................................ 26
           7.4.   Advice of Changes....................................... 26
           7.5.   Best Efforts............................................ 26
           7.6.   Access to Properties and Records........................ 26
           7.7.   Supply Documents, Reports, etc.......................... 26
           7.8.   Alliance Disclosure Schedule............................ 27

8.  Conditions to Alliance's Obligations.................................. 27

9.  Conditions to AROC's Obligations...................................... 28

10. Additional Agreements................................................. 29
           10.1.  Confidentiality......................................... 29
           10.2.  Further Assurances...................................... 29
           10.3.  Offices................................................. 30
           10.4.  Warrants................................................ 30
           10.5.  Convertible Shares...................................... 30
           10.6.  Convertible Loan Notes.................................. 30
           10.7.  AROC Delaware Capitalization............................ 30

                                       ii
<PAGE>

           10.8.  Indemnification......................................... 30

11. Termination, Waiver and Amendment..................................... 31
           11.1.  Termination............................................. 31
           11.2.  Manner of Exercise...................................... 32
           11.3.  Effect of Termination................................... 32

12. Miscellaneous......................................................... 32
           12.1.  Survival................................................ 32
           12.2.  Expenses................................................ 32
           12.3.  Press Releases.......................................... 32
           12.4.  Binding Effect.......................................... 32
           12.5.  Severability............................................ 32
           12.6.  Notices................................................. 33
           12.7.  Entire Agreement........................................ 33
           12.8.  Amendments; Waivers..................................... 33
           12.9.  Headings................................................ 33
           12.10. Counterparts............................................ 34
           12.11. Specific Performance.................................... 34
           12.12. GOVERNING LAW........................................... 34
           12.13. Schedules............................................... 34
           12.14. Time of Essence......................................... 34
           12.15. Best Efforts............................................ 34

                                      iii
<PAGE>

                         EXCHANGE AND MERGER AGREEMENT
                         -----------------------------

     THIS EXCHANGE AND MERGER AGREEMENT (this "Agreement") is entered into as of
July  22, 1999, by and among AMERICAN RIVERS OIL COMPANY, a Wyoming corporation
("AROC"), AMERICAN RIVERS OIL COMPANY, a Delaware corporation ("AROC Delaware"),
and ALLIANCE RESOURCES PLC, a public limited company incorporated in England and
Wales ("Alliance").

                                    Recitals
                                    --------

     The parties desire to effect certain transactions on the terms, and subject
to the provisions and conditions, of this Agreement.

                                   Agreement
                                   ---------

     NOW, THEREFORE, for and in consideration of the premises and the mutual
agreements hereinafter set forth, in accordance with the provisions of
applicable law, the parties hereby agree as follows:

1.   Definitions.  As used in this Agreement and the Exhibits, Schedules and
     -----------
documents delivered pursuant to this Agreement, the following terms shall have
the following meanings:

          "ADEA" means the Age Discrimination in Employment Act, as amended, or
any successor statute.

          "Affiliate" means an "affiliate" or associate" as those terms are
defined in Rule 12b-2 promulgated by the Commission under the Exchange Act.

          "Alliance" means Alliance Resources PLC, a public limited company
incorporated in England and Wales.

          "Alliance Assets" means all of the rights, titles and interests,
whether direct or indirect, of the Alliance Entities in and to all of the
property, rights and interests incident to, all oil, gas and mineral properties
of every kind and character, whether producing, non-producing, developed or
undeveloped, wherever situated, including without limitation all of the rights,
titles and interests of the Alliance Entities in and to all leases, royalty
interests, overriding royalty interests, rights-of-way, easements, options,
orders and rulings of applicable regulatory agencies, wells, lease and well
equipment, machinery, production facilities, processing facilities, gathering
systems, transportation systems, disposal systems, fixtures and other items of
personal property and improvements now or as of the Mailing Date appurtenant to
such properties or used, obtained or held for use in connection with the
operation of such properties or with the production, treatment, sale or disposal
of hydrocarbons or water produced therefrom or attributable thereto.

          "Alliance Disclosure Schedule" means the Disclosure Schedule delivered
by Alliance to AROC within seven calendar days after the execution of this
Agreement. Each heading in the Alliance Disclosure Schedule shall refer to the
applicable section of this Agreement.

                                       1
<PAGE>

          "Alliance Entities" means Alliance and its Subsidiaries.

          "Alliance Financial Statements" means, collectively, the audited
consolidated financial statements of the Alliance Entities as of and for the
year ended April 30, 1998; and the unaudited interim financial statements of the
Alliance Entities as of and for the nine months ended January 31, 1999.

          "Alliance Convertible Loan Notes" means the convertible loan notes of
Alliance that are convertible into 1,193,581 Alliance Ordinary Shares.

          "Alliance Convertible Shares" means the convertible restricted voting
shares of (Pounds)0.01 each in the capital of Alliance.

          "Alliance Form 10-K" means Alliance's Annual Report on Form 10-K for
the year ended April 30, 1998.

          "Alliance Ordinary Shares" means the ordinary shares of (Pounds)0.01
each in the capital of Alliance.

          "Alliance Proxy Statement" means the proxy statement for the annual
meeting of Alliance Stockholders held March 5, 1999.

          "Alliance Reports" means each registration statement, schedule,
report, proxy statement or information statement prepared by Alliance since
April 30, 1998, including, without limitation, (i) the Alliance Form 10-K, (ii)
Alliance's Quarterly Reports on Form 10-Q for the periods ended July 31, October
31, 1998 and January 31, 1999, and (iii) the Alliance Proxy Statement, each in
the form (including exhibits and any amendments thereto) filed with the
Commission.

          "Alliance Shares" means the Alliance Ordinary Shares and the Alliance
Convertible Shares.

          "Alliance Stockholders" means the holders of Alliance Shares from time
to time.

          "Alliance Warrants" means the outstanding warrants to purchase a total
of 5,079,149 Alliance Ordinary Shares.

          "AROC" means American Rivers Oil Company, a Wyoming corporation.

          "AROC Assets" means all assets of the AROC Entities.

          "AROC Class B Shares" means all of the issued and outstanding shares
of class B common stock of AROC, par value $0.01 per share.

          "AROC Common Shares" means all of the issued and outstanding common
stock of AROC, par value $0.01 per share.

          "AROC Delaware" means American Rivers Oil Company, a Delaware
corporation.

                                       2
<PAGE>

          "AROC Delaware Shares" means the common stock, par value $0.01 per
share, of AROC Delaware.

          "AROC Disclosure Schedule" means the Disclosure Schedule delivered by
AROC to Alliance within seven calendar days after the execution of this
Agreement. Each heading in the AROC Disclosure Schedule shall refer to the
applicable section of this Agreement.

          "AROC Entities" means AROC and its Subsidiaries.

          "AROC Financial Statements" means, collectively, the respective
audited consolidated financial statements of the AROC Entities as of and for the
years ended March 31, 1998 and 1999.

          "AROC Form 10-K" means AROC's Annual Report on Form 10-K for the year
ended March 31, 1999.

          "AROC Reports" means each registration statement, schedule, report,
proxy statement or information statement prepared by AROC since March 31, 1998,
including, without limitation, (i) the AROC Form 10-K, and (ii) AROC's Quarterly
Reports on Form 10-Q for the periods ended June 30, September 30 and December
31, 1998, each in the form (including exhibits and any amendments thereto) filed
with the Commission.

          "AROC Shares" means the AROC Common Shares and the AROC Class B
Shares.

          "AROC Stockholders" means the holders of AROC Shares from time to
time.

          "City Code" means the City Code on Takeovers and Mergers of the United
Kingdom.

          "Code" means the Internal Revenue Code of 1986, as amended, or any
successor statute.

          "Commission" means the Securities and Exchange Commission and/or any
other Governmental Entity that administers either the Securities Act or the
Exchange Act.

          "DGCL" means the Delaware General Corporation Law.

          "Dissenting Shares" has the meaning given that term in Section
3.2(g)(1).

          "Effective Time" has the meaning given that term in Section 3.2(a).

          "Encumbrance" means any option, pledge, security interest, lien,
charge, encumbrance, or restriction (whether on voting, sale, transfer,
disposition or otherwise), whether imposed by agreement, understanding, law or
otherwise, except those arising under applicable federal or state securities
laws.

          "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended, or any successor statute.

          "Exchange Act" means the Securities Exchange Act of 1934, as amended,
or any successor statute.

                                       3
<PAGE>

          "Exchange Agent" means the transfer agent for the AROC Shares.

          "Excluded Shares" has the meaning given that term in Section
3.2(g)(1).

          "GAAP" means generally accepted accounting principles set forth in the
opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants, in statements and pronouncements of
the Financial Accounting Standards Board or in such other statements by such
other entity as may be approved by a significant segment of the accounting
profession, which are applicable to the circumstances as of the date of
determination.

          "Governmental Entity" means any federal, state, municipal, domestic or
foreign court, tribunal, administrative agency, department, commission, board,
bureau or other governmental authority or instrumentality.

          "Indemnified Parties" has the meaning given in Section 10.8.

          "Information Statement" means the information statement filed by AROC
pursuant to Section 2.1(b) and any amendments or supplements to the information
statement.

          "Mailing Date" has the meaning given in Section 3.1.

          "Material Effect" means a material adverse effect on the business or
financial condition of a party and its Subsidiaries taken as a whole.

          "Merger" means the merger of AROC with and into Newco, with Newco
being the surviving corporation, pursuant to Section 3.2.

          "Merger Consideration" has the meaning given that term in Section
3.2(g)(1).

          "Newco" means a Delaware corporation to be formed as a subsidiary of
AROC Delaware.

          "Offer" means the offer made pursuant to Section 2.3.

          "Offer Documents" means the prospectus included in the Registration
Statement and any other documents used to solicit the Alliance Stockholders to
accept the Offer.

          "Plan" means (i) any employee benefit plan as defined in Section 3(3)
of ERISA, which is (a) maintained by a party or any of its Subsidiaries, or (b)
to which a party or any of its Subsidiaries is making or accruing an obligation
to make contributions, or (ii) any other formal or informal obligation to,
arrangement with, or plan or program for the benefit of, employees of a party or
any of its Subsidiaries, including, but not limited to, stock options, stock
bonuses, stock purchase agreements, bonuses, incentive compensation, deferred
compensation, supplemental pensions, vacations, severance pay, insurance or any
other benefit, program or practice.

          "Registration Statement" means the registration statement filed by
AROC Delaware pursuant to Section 2.1 and any amendments or supplements to the
registration statement.

          "Securities Act" means the Securities Act of 1933, as amended, or any
successor statute.

                                       4
<PAGE>

          "Subsidiary" or "Subsidiaries" means any corporation more than fifty
percent (50%) of the voting power of which is owned directly or indirectly by a
party or other relevant person, as the context requires.

          "Surviving Corporation" has the meaning given that term in Section
3.2(b).

          "Taxes" means all taxes, charges, fees, levies, duties or other
assessments, including, without limitation, income, gross receipts, excise, ad
valorem, property, production, severance, sales, use, license, payroll and
franchise taxes, imposed by any Governmental Entity and includes any estimated
tax, interest and penalties or additions to tax.

          "Tax Return" means a report, return or other information required to
be supplied by a party comprising a part of the Alliance Entities or the AROC
Entities, as the case may be, to a Governmental Entity in connection with Taxes
including, where permitted or required, combined or consolidated returns for any
group of entities that includes that entity.

          "WBCA" means the Wyoming Business Corporation Act.

2.   The Exchange Offer and Merger.
     -----------------------------

     2.1.   Filings by AROC.
            ---------------

     (a)  As soon as reasonably practicable after the date of this Agreement,
AROC Delaware will, in compliance with all applicable state and federal laws,
and in form and substance satisfactory to Alliance, file with the Commission a
registration statement relating to the AROC Delaware Shares to be offered to the
Alliance Stockholders pursuant to the Offer and to be issued to the AROC
Shareholders in the Merger (the "Registration Statement"), and will thereafter
use its best efforts to obtain as promptly as possible and to continue the
effectiveness of the Registration Statement.

     (b)  As soon as reasonably practicable after the date of this Agreement,
AROC will, in compliance with all applicable state and federal laws, and in form
and substance satisfactory to Alliance, file with the Commission an information
or proxy statement relating to a meeting of the AROC Stockholders to approve the
Merger (the "Information Statement"), and will thereafter use its best efforts
to respond as promptly as possible to all comments of the Commission with
respect to the Information Statement.

     (c)  Prior to delivering the Offer Documents to the Alliance Stockholders,
AROC Delaware will, in compliance with all applicable state and federal laws,
and in form and substance satisfactory to Alliance, file with the Commission a
Tender Offer Statement on Schedule 14D-1 relating to the Offer containing the
prospectus included in the Registration Statement.

     (d)  AROC Delaware will prepare and file with the Commission and use its
best efforts to cause as promptly as possible and to continue the effectiveness
of such amendments and supplements to the registration statement, the prospectus
included in the Registration Statement and the Schedule 14D-1 for so long as the
Offer shall continue, and to comply with the requirements of all applicable laws
regarding the conduct of the Offer.

                                       5
<PAGE>

     (e)  AROC Delaware will use its best efforts to register or qualify the
AROC Delaware Shares offered pursuant to the Offer and the Merger under the
securities or blue sky laws of such jurisdictions as Alliance shall request and
do any and all other acts or things that may be necessary or advisable to enable
to Offer and the Merger to be made and consummated.

     (f)  After the Commission completes its review of the Information
Statement, and contemporaneously with the making of the Offer, AROC will deliver
the Information Statement, together with such documents as are required under
the City Code, to the AROC Stockholders.

     (g)  The materials filed by AROC and AROC Delaware with the Commission and
the materials sent by AROC Delaware to the Alliance Stockholders in connection
with the Offer and to the AROC Stockholders in connection with the Information
Statement will not include any untrue statement of a material fact or omit to
state a material fact required to be stated therein or necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading.  The materials shall in form and substance be satisfactory to
Alliance and shall include all information regarding the AROC Entities required
by applicable law and the City Code to inform the Alliance Stockholders of the
Offer and to inform the AROC Stockholders of the matters contemplated by this
Agreement.

     (h)  Alliance agrees to furnish to AROC and AROC Delaware all information
(which shall meet the standard of the preceding paragraph) reasonably requested
by AROC and AROC Delaware in connection with preparing such materials.

     2.2.   Filings by Alliance.
            -------------------

     (a)  Not less than 10 business days after the commencement of the Offer,
Alliance will, in compliance with all applicable state and federal laws, and in
form and substance satisfactory to AROC, file with the Commission and deliver to
the Alliance Stockholders a Tender Offer Solicitation/Recommendation Statement
on Schedule 14D-9, and file with applicable state authorities such other
documents as may be necessary or appropriate, recommending (subject to the
fiduciary duties of the directors of Alliance) that the Alliance Stockholders
accept the Offer.

     (b)  Alliance will prepare and file with the Commission and use its best
efforts to cause as promptly as possible and to continue the effectiveness of
such amendments and supplements to the Schedule 14D-9 for so long as the Offer
shall continue, and to comply with the requirements of all applicable laws and
the City Code regarding the conduct of the Offer.

     (c)  As soon as reasonably practicable after the date of this Agreement,
Alliance will, in compliance with all applicable laws, and in form and substance
satisfactory to AROC, file with London Stock Exchange Limited and all other
applicable regulatory bodies in the United Kingdom, all materials reasonably
necessary to make, and use its best efforts, to obtain the approval of those
authorities to, the Offer.

     (d)  The materials filed by Alliance and the materials sent by Alliance to
the Alliance Stockholders in connection with the Offer will not include any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading. The materials shall in
form and substance be satisfactory to AROC and shall include all information
regarding the

                                       6
<PAGE>

Alliance Entities required by applicable law and the City Code to inform the
Alliance Stockholders of the Offer.

     (e)  AROC agrees to furnish to Alliance all information (which shall meet
the standard of the preceding paragraph) reasonably requested by Alliance in
connection with preparing such materials.

     2.3.   Solicitation of Offer.  Promptly after the satisfaction of all
            ---------------------
applicable regulatory requirements, including the filings contemplated by
Sections 2.1 and 2.2 and the completion of the actions contemplated by Section
3, each of Alliance, AROC and AROC Delaware agrees (subject to the fiduciary
duties of the directors of each of them):

     (a)  that AROC will deliver the Information Statement, together with such
documents as are required under the City Code, to the AROC Stockholders;

     (b)  to use its best efforts to solicit the Alliance Stockholders to accept
the offer of AROC Delaware to exchange one AROC Delaware Share for each Alliance
Ordinary Share and 0.5 AROC Delaware Shares for each Alliance Convertible Share
(the "Offer");

     (c)  to make such press announcements as are required under the City Code
in relation to the Offer;

     (d)  to make the Offer unconditional under U.K. law and the City Code as
soon as practicable after Alliance Stockholders holding a majority of both the
Alliance Ordinary Shares and the Alliance Convertible Shares have accepted the
Offer; and

     (e)  to continue the Offer for so long as required by applicable U.S. and
U.K. law and the City Code.

     2.4.   Solicitation of The Merger.  Promptly after the satisfaction of all
            --------------------------
applicable regulatory requirements, including the filings contemplated by
Sections 2.1 and 2.2 and the completion of the actions contemplated by Section
3, each of Alliance, AROC and AROC Delaware agrees (subject to the fiduciary
duties of the directors of each of them):

     (a)  to use its best efforts to deliver the Information Statement to the
AROC Stockholders and recommend and solicit the vote of the AROC Stockholders to
approve the Merger;

     (b)  to hold the meeting of AROC Stockholders contemplated by the
Information Statement;

 3.  Mailing Date Actions and Completion of the Merger.
     --------------------------------------------------

     3.1.   Mailing Date.  On or prior to the date the Offer Documents are to be
            ------------
mailed to the Alliance Stockholders (the "Mailing Date"), the parties shall
deliver the following documents at the offices of Jenkens & Gilchrist, P.C.,
1445 Ross Avenue, Suite 3200, Dallas, Texas at 10:00 a.m., local time.

     (a)  AROC shall deliver to Alliance the following:

                                       7
<PAGE>

     (1)  A copy of the charters of each of the AROC Entities certified as of a
  date within ten days of the Mailing Date by the Secretary of State of the
  state of incorporation of each of the respective entities and certified by the
  respective corporate secretary as to the absence of any amendments between the
  date of certification by the respective Secretary of State and the Mailing
  Date;

     (2)  A certificate from the appropriate governmental officials of the state
  of incorporation as to the existence and good standing of each of the AROC
  Entities and the payment of Taxes by each of the AROC Entities as of a date
  within ten days of the Mailing Date, and, if available, a telecopy from such
  officials as to the same matters dated the business day before the Mailing
  Date;

     (3)  A certificate of the corporate secretary of each of the AROC Entities
  attaching thereto a true and correct copy of the bylaws of the respective
  entity;

     (4)  A certificate of the corporate secretary of AROC attaching copies of
  the resolutions of the board of directors approving the Offer;

     (5)  All correspondence of AROC with the Commission relating to the filing
  of the documents referred to in Section 2.1;
                                  -----------

     (6)  The certificate of an officer of AROC referred to in Section 8(c);
                                                               ------------

     (7)  The opinion of AROC's counsel referred to in Section 8(e);
                                                       ------------

     (8)  All consents or approvals of any third party that are required to be
  identified pursuant to Section 4.4; and
                         -----------

     (9)  Such other documents as are required pursuant to this Agreement or as
  may reasonably be requested from AROC by Alliance or its counsel.

     (b)  Alliance shall deliver to AROC the following:

     (1)  a copy of the Memorandum and Articles of Association (and all
  amendments thereto, if any) of Alliance and each of Alliance's U.K.
  Subsidiaries certified by the corporate secretary as to the absence of any
  amendments as of the Mailing Date;

     (2)  a copy of the charters of each of Alliance's U.S. Subsidiaries
  certified as of a date within ten days of the Mailing Date by the appropriate
  governmental officials of the jurisdiction of organization of each of the
  respective entities and certified by the respective corporate secretary as to
  the absence of any amendments between the date of certification by the
  governmental official and the Mailing Date;

     (3)  A certificate from the appropriate governmental officials of the
  jurisdiction of organization of each of Alliance's U.S. Subsidiaries as to the
  existence and good standing of such Subsidiary as of the date within ten days
  of the Mailing Date, and, if available, a telecopy from such officials as to
  the same matters dated the business day before the Mailing Date;

                                       8
<PAGE>

     (4)  A certificate of the corporate secretary of each of Alliance's U.S.
  Entities attaching thereto a true and correct copy of the bylaws of the
  respective entity;

     (5)  A certificate of the corporate secretary of Alliance attaching copies
  of corporate resolutions duly adopted by its board of directors resolving to
  recommend the Offer;

     (6)  All correspondence of Alliance with the Commission relating to the
  filing of the documents referred to in Section 2.2;

     (7)  The certificate of an officer of Alliance referred to in Section 9(b);
                                                                   ------------

     (8)  The opinion of Alliance's counsel referred to in Section 9(d);
                                                           ------------

     (9)  All consents or approvals of any third party that are required to be
  identified pursuant to Section 5.4;
                         -----------

     (10) Such other documents as are required pursuant to this Agreement or as
  may reasonably be requested from Alliance by AROC or its counsel.

     3.2.   The Merger.
            ----------

     (a)  As soon as practicable after the AROC shareholders have approved the
Merger and it is determined that at least a majority of the Alliance
Stockholders have accepted the Offer, and immediately before the Offer becomes
unconditional and AROC Delaware Shares are issued to those Alliance Stockholders
who have accepted the Offer, provided that this Agreement has not been
terminated or abandoned pursuant to Article 11, AROC and Newco will cause a (i)
a Certificate of Merger to be executed and filed with the Secretary of State of
Delaware as provided in Section 251 of the DGCL and (ii) Articles of Merger to
be executed and filed with the Secretary of State of Wyoming as provided in
Section 17-16-1105 of the WBCA.  The Merger shall become effective on the date
on which the Delaware Certificate of Merger has been duly filed with the
Secretary of State of Delaware and the Wyoming Articles of Merger have been duly
filed with the Secretary of State of the State of Wyoming, and such time is
hereinafter referred to as the "Effective Time."

     (b)  At the Effective Time AROC shall be merged with and into Newco and the
separate corporate existence of AROC shall thereupon cease. Newco shall be the
surviving corporation (the "Surviving Corporation") in the Merger and shall
continue to be governed by the laws of the State of Delaware, and the separate
corporate existence of Newco with all its rights, privileges, immunities, powers
and franchises shall continue unaffected by the Merger, except as set forth in
Section 3.2(f) and (g).  The Merger shall have the effects specified in the
- --------------     ---
Delaware General Corporation Law and the Wyoming Business Corporation Act.

     (c)  Change of Name of AROC Delaware.  The Information Statement and
          -------------------------------
Registration Statement shall provide for, and concurrently with the Effective
Time, AROC Delaware shall file a Certificate of Amendment to its Certificate of
Incorporation to effect, a change of the name of AROC Delaware to "Alliance
Resources Inc."

                                       9
<PAGE>

     (d)  The Certificate of Incorporation.  The Certificate of Incorporation of
          --------------------------------
Newco in effect at the Effective Time shall be the Certificate of Incorporation
of the Surviving Corporation, until duly amended in accordance with the terms
thereof and the DGCL.

     (e)  By-Laws.  The By-Laws of Newco in effect at the Effective Time shall
          -------
be the By-Laws of the Surviving Corporation, until duly amended in accordance
with the terms thereof and the DGCL.

     (f)  Directors and Officers.  The directors and officers of AROC Delaware
          ----------------------
and of Newco shall, from and after the Effective Time, and until their
successors have been duly elected or appointed and qualified or until their
earlier death, resignation or removal in accordance with the respective
corporation's Certificate of Incorporation and By-Laws, be the following:

            John A. Keenan            President and Director of AROC Delaware
                                      and Newco

            Francis M. Munchinski     Secretary of AROC Delaware and Newco

            Paul R. Fenemore          Director of AROC Delaware and Newco

            Robert E. Schulte         Director of Newco

            M. Phillip Douglas        Director of AROC Delaware

            Michael E. Humphries      Director of AROC Delaware

            William J.A. Kennedy      Director of AROC Delaware

            John R. Martinson         Director of AROC Delaware

     (g)  Conversion or Cancellation of Shares.  The manner of converting or
          ------------------------------------
canceling shares of AROC in the Merger shall be as follows:

     (1)  At the Effective Time, each AROC Share issued and outstanding
  immediately prior to the Effective Time, other than AROC Shares that are owned
  by AROC or any direct or indirect subsidiary of AROC or Shares ("Dissenting
  Shares") which are held by stockholders ("Dissenting Stockholders") properly
  exercising appraisal rights pursuant to (S)17-16-1321 and (S)17-16-1323 of the
  WBCA, if applicable (collectively, "Excluded Shares") shall, by virtue of the
  Merger and without any action on the part of the holder thereof, be converted
  into the right to receive, 0.11 AROC Delaware Shares (the "Merger
  Consideration").  At the Effective Time, all AROC Shares, by virtue of the
  Merger and without any action on the part of the holders thereof, shall no
  longer be outstanding and shall be canceled and retired and shall cease to
  exist, and each holder of a certificate representing any such AROC Shares
  (other than Excluded Shares) shall thereafter cease to have any rights with
  respect to such AROC Shares, except the right to receive the Merger
  Consideration for such AROC Shares upon the surrender of such certificate in
  accordance with Section 3.2(h) or the right, if any, to receive payment from
  the Surviving Corporation of the "fair value" of such Shares as determined in
  accordance with (S)17-16-1325 of the WBCA.

                                       10
<PAGE>

     (2)  At the Effective Time, each AROC Share issued and outstanding at the
  Effective Time and owned by AROC Delaware or held in AROC's treasury or owned
  by AROC or any direct or indirect subsidiary of AROC shall, by virtue of the
  Merger and without any action on the part of the holder thereof, cease to be
  outstanding, shall be canceled and retired without payment of any
  consideration therefor and shall cease to exist.

     (3)  At the Effective Time, each Newco Share issued and outstanding at the
  Effective Time shall continue to be outstanding and shall not be affected by
  the Merger.

     (4)  At the Effective Time, each AROC Delaware Share issued and outstanding
  at the Effective Time (other than AROC Delaware Shares issued or to be issued
  pursuant to the Offer) shall, by virtue of the merger and without any action
  on the part of the holder thereof, cease to be outstanding, shall be canceled
  and retired without payment of any consideration therefore and shall cease to
  exist.

     (h)  Payment for AROC Shares.
          -----------------------

     (1)  AROC Delaware shall make available or cause to be made available to
  the Paying Agent at the Effective Time certificates representing the AROC
  Delaware Shares sufficient to enable the Paying Agent to deliver the necessary
  certificates to the former holders of AROC Shares as required by paragraph
  (b).

     (2)  On or after the Effective Time, each person who was immediately before
  the Effective Time a holder of record of issued and outstanding AROC Shares
  may deliver to the Paying Agent a letter of transmittal in a form suitable to
  the Paying Agent duly executed and completed in accordance with the
  instructions thereto, together with such holders' certificates representing
  such AROC Shares, and AROC Delaware shall cause the Paying Agent to deliver to
  such holders certificates in respect of the AROC Delaware Shares and any
  dividends or distributions thereon to which such holders are then entitled.

     (3)  Fractional AROC Delaware Shares will not be issued to any person.  In
  lieu of issuing a fractional AROC Delaware Share to any person, AROC Delaware
  will round the number of AROC Delaware Shares to be issued to each person to
  the nearest whole number of AROC Delaware Shares.

     (4)  If AROC Delaware Shares are to be issued to a person other than the
  registered holder of the certificates surrendered, it shall be a condition of
  such issue that the certificates so surrendered shall be properly endorsed or
  otherwise in proper form for transfer and that the person requesting such
  delivery shall pay any transfer or other taxes required by reason of the
  delivery to a person other than the registered holder of the certificates
  surrendered or establish to the satisfaction of AROC Delaware or the Paying
  Agent that such tax has been paid or is not applicable.

     (i)  Dissenters' Rights.
          ------------------

     (1)  Notwithstanding anything in this Agreement to the contrary, AROC
  Shares that are issued and outstanding immediately prior to the Effective Time
  and that are held by AROC

                                       11
<PAGE>

  Stockholders who have delivered a written demand for appraisal of such AROC
  Shares in the manner provided in Section 17-16-1321 of the WBCA (the
  "Dissenting Shares") shall not be canceled and the holders thereof shall not
  receive the right to receive the consideration provided in Section 3.2(g)(1),
  unless and until such holder shall have failed to perfect or shall have
  effectively withdrawn or lost the right to appraisal and payment under the
  WBCA, as the case may be. If such holder shall have failed to perfect or shall
  have effectively withdrawn or lost such right, the AROC Shares shall thereupon
  be deemed to have been canceled and the holders thereof to have become
  entitled, with effect from the Effective Time, to receive the consideration
  specified in Section 3.2(g)(1).

     (2)  AROC promptly shall give Alliance notice of any demand made by or on
  behalf of any dissenting AROC Stockholder to be paid the "fair value" of the
  AROC Stockholder's AROC Shares, as provided in Section 17-16-1321 of the WBCA,
  and the Surviving Corporation shall thereupon have sole and exclusive rights
  to conduct and resolve, in its sole discretion, all negotiations and
  proceedings with respect to, and the ultimate disposition of, any such demands
  in any manner that the Surviving Corporation may elect.  All such payments
  shall be made solely by the Surviving Corporation and shall not be made by,
  nor shall Alliance reimburse the Surviving Corporation for, such payments.

     (j)  Transfer of AROC Shares After the Effective Time. No transfers of AROC
          ------------------------------------------------
Shares shall be made on the stock transfer books of the Surviving Corporation at
or after the Effective Time. If, after the Effective Time, certificates formerly
representing AROC Shares are presented to the Surviving Corporation, they shall
be canceled and the holders thereof shall instead be entitled to be issued AROC
Delaware Shares as provided in this Section 3.2.
                                    -----------

4.   Representations, Warranties and Covenants of AROC.  Except as expressly set
     -------------------------------------------------
forth and specifically identified by section number of this Agreement in the
AROC Disclosure Schedule, AROC represents, warrants and covenants to Alliance,
on the date hereof and as of the Mailing Date, as follows:

     4.1.   Corporate Organization.
            ----------------------

     (a)  Each of the AROC Entities is a corporation duly organized and validly
existing as a corporation and in good standing under the laws of its
jurisdiction of incorporation.

     (b)  Each of the AROC Entities has the requisite corporate power and
authority to carry on its business as now being conducted and to own, lease and
operate its property and assets, and each of the AROC Entities is duly qualified
or licensed to do business and is in good standing in every jurisdiction in
which the failure to be so qualified and licensed could have a Material Effect.

     (c)  AROC has delivered or made available to Alliance true, correct and
complete copies of each of the AROC Entities' respective Certificate of
Incorporation and Bylaws as presently in effect.

     4.2.   Capitalization.
            --------------

     (a)  The authorized capital stock of AROC consists of 20,000,000 shares of
common stock, par value $0.01 per share, 3,615,770 of which are issued and
outstanding, 8,000,000 shares of class B common stock, par value $0.01 per
share, 7,267,820 of which are issued and outstanding, and

                                       12
<PAGE>

5,000,000 shares of preferred stock, par value $0.50 per share, none of which
are outstanding. The authorized capital stock of AROC Delaware consists of 100
shares of common stock, par value $0.001 per share, all of which are issued and
outstanding. Section 4.2 of the AROC Disclosure Schedule sets forth the number
and type of securities of AROC that may be acquired pursuant to outstanding
options or rights to purchase AROC Common Shares and the exercise prices at
which such equity securities may be acquired. All of the issued shares of each
of the AROC Entities are, and all of the AROC Delaware Shares to be issued
pursuant to the Offer, when issued in accordance with the terms of the Offer,
will be validly issued, fully paid and nonassessable and none of such shares
have been issued in violation of the preemptive rights of any person. AROC has
no shares of capital stock reserved for issuance.

     (b)  Except as described in Section 4.2(a), there are no (i) shares of
capital stock or other securities bearing voting or other equity rights, whether
contingent or not, of any of the AROC Entities outstanding; (ii) outstanding
subscriptions, puts, options, warrants or other rights, contract  ual or
otherwise, to purchase or acquire any capital stock of any of the AROC Entities;
or (iii) contracts, commitments, understandings, arrangements or restrictions by
which any of the AROC Entities is or may become bound to issue any additional
equity interests or any options or rights with respect thereto, or any
securities convertible into any equity interests.

     (c)  The issued and outstanding stock of AROC owned by the directors,
executive officers and 5% or greater stockholders of AROC is owned of record,
and to the knowledge of AROC, beneficially, as described in the AROC Form 10-K.
AROC owns all of the issued and outstanding stock of each of its Subsidiaries,
directly or indirectly, free and clear of all Encumbrances.  Except for its
Subsidiaries, neither AROC nor any of its Subsidiaries owns or holds any equity,
debt or other interest in any entity or business or any option to acquire any
such interest, except for accounts receivable that have arisen in the ordinary
course of business.

     4.3.   Authority; No Violation.
            -----------------------

     (a)  The execution and performance of this Agreement by AROC have been duly
and validly authorized by the board of directors of AROC and, except for the
approval of the AROC shareholders, no other corporate action is necessary to
authorize the execution, delivery and performance of this Agreement by AROC.
AROC has full, absolute and unrestricted right, power and authority to execute
and perform this Agreement and, subject to the approval of the AROC
shareholders, to carry out the transactions contemplated hereby.  This Agreement
has been duly and validly executed by AROC and, is a valid and binding
obligation of AROC, enforceable in accordance with its terms, except as
enforceability may be limited by bankruptcy, moratorium, reorganization,
receivership or similar laws affecting the rights of creditors generally.

     (b)  None of the execution, delivery or performance of this Agreement does
or will, after the giving of notice, lapse of time or otherwise, (i) result in
any violation of or be in conflict with or constitute a default under any term
or provision of the Certificate of Incorporation or Bylaws of any of the AROC
Entities of or any term or provision of any judgment, decree, order, statute,
injunction, rule or regulation applicable to any of the AROC Entities, or of any
material note, bond, mortgage, indenture, lease, license, franchise, agreement
or other instrument or obligation to which any of the AROC Entities is bound;
(ii) result in the creation of any material Encumbrance upon AROC Shares, any of
the Alliance Assets or any of the AROC Assets pursuant to any such term or
provision; or (iii) constitute a material default under or give any party the
right to accelerate, amend or modify,

                                       13
<PAGE>

terminate, abandon or refuse to perform or comply with, any material contract,
agreement, arrangement, commitment or plan to which any AROC Entities is a
party, or by which any of the AROC Entities or any of their rights, properties
or assets may be subject or bound.

     4.4.   Consents and Approvals.  No consent, waiver, approval or
            ----------------------
authorization of, or declaration, designation, filing, registration or
qualification with, any Governmental Entity or any third party, is required to
be made or obtained by the AROC Entities in connection with the execution,
delivery and performance of this Agreement or to preserve any material rights
and benefits enjoyed by any of the AROC Entities on the date hereof following
the consummation of the transactions contemplated by this Agreement except (a)
those that have already been obtained or (b) those specifically contemplated by
this Agreement.

     4.5.   Violations of Laws, Permits, etc.
            ---------------------------------

     (a)  None of the AROC Entities is in violation of any term or provision of
its Certificate of Incorporation or Bylaws.  None of the AROC Entities is in
violation of any term or provision of any judgment, decree, order, statute,
injunction, rule, ordinance or regulation applicable to it, or of any agreement
or instrument applicable to such entity where the violation thereof would result
in a Material Effect.

     (b)  Each of the AROC Entities holds and has maintained in full force and
effect all certificates, licenses and permits material to the conduct of its
business, and has not received any notification that any revocation or
limitation thereof is threatened or pending where such revocation or limitation
would result in a Material Effect.

     4.6.   AROC Reports.  AROC has made available to Alliance each of the AROC
            ------------
Reports. As of their respective dates, the AROC Reports did not, and any AROC
Reports filed with the Commission subsequent to the date of this Agreement will
not, contain any untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements made
therein, in light of the circumstances in which they were made, not misleading.

     4.7.   AROC Financial Statements.
            -------------------------

     (a)  In all material respects the consolidated AROC Financial Statements
fairly present the consolidated assets, liabilities and financial position of
the respective entities purported to be covered thereby as of the dates thereof
and the results of their operations and cash flow for the respective periods
ended on such dates, all in conformity with GAAP consistently applied.

     (b)  The AROC Financial Statements were prepared from the books and records
of each of the respective entities purported to be covered thereby.  Such AROC
Financial Statements do not contain any items of a material special or
nonrecurring nature, except as expressly noted in such statements.

     4.8.   No Undisclosed Liabilities, etc.  None of the AROC Entities has any
            --------------------------------
material liabilities or obligations, whether direct, indirect, absolute or
contingent (including, without limitation, liabilities as guarantor or otherwise
with respect to obligations of others), except (a) liabilities that are fully
reflected on or reserved against on the latest balance sheet of such entity
included in the AROC Financial Statements or (b) liabilities incurred in the
ordinary course of

                                       14
<PAGE>

business since the date of the latest balance sheet included in the AROC
Financial Statements that are consistent with past practice.

     4.9.   Absence of Certain Changes.  Since the date of the latest audited
            --------------------------
AROC Financial Statement, none of the AROC Entities has:

     (a)  Suffered any change that would result in a Material Effect;

     (b)  Borrowed any money or incurred, assumed or become subject to, whether
directly or by way of guarantee or otherwise, any other material obligation or
liability for borrowed money, whether absolute or contingent;

     (c)  (i) Issued, purchased or redeemed any of its capital securities or any
option, warrant or right to purchase any of the same; or (ii) authorized,
declared or made any dividends, distributions of earnings or capital on, or
splits or any other reclassification of its equity securities;

     (d)  Acquired any material assets or properties having a value in excess of
$100,000 in the aggregate;

     (e)  Increased the salaries, compensation, pension or other benefits
payable, or paid any bonuses, to its officers and directors or their Affiliates;

     (f)  Agreed, either in writing or otherwise, to take any action described
in this Section 4.9.
        -----------

     4.10.  Data Regarding the AROC Assets.  All of the information made or to
            ------------------------------
be made available to Alliance and its representatives regarding the AROC Assets
is accurate and complete in all material respects, when considered in context
and together with all relevant information made available.

     4.11.  Litigation.
            ----------

     (a)  There is no action, proceeding, investigation or inquiry pending or,
to the knowledge of the AROC Entities, threatened (i) against or affecting any
of the AROC Entities or their assets or ordinary conduct of the business that,
if determined adversely to the AROC Entities, would result in a Material Effect,
except as described in the AROC Reports, or (ii) that questions this Agreement
or any action contemplated by this Agreement or in connection with the Merger.

     (b)  There are no citations, fines or penalties heretofore asserted against
any of the AROC Entities or their assets under any federal, state or local law
relating to air, noise or water pollution or other environmental protection
matters, or relating to occupational health or safety, of which such entity has
received notice and that remain unpaid or that could otherwise bind the assets
of any of the AROC Entities and that would result in a Material Effect.

     (c)  AROC has no knowledge of any state of facts or of the occurrence or
nonoccurrence of any event or group of related events, that should reasonably
cause AROC to determine that there exists any basis for any material claim
against the AROC Entities for any of the matters described in paragraphs (a) or
(b).

                                       15
<PAGE>

     4.12.  Tax Returns and Payments.
            ------------------------

     (a)  The AROC Entities (or the common parent of any affiliated group of
which any of such entities is or has been a member) have duly filed in correct
form in all material respects all Tax Returns required to be filed by such
entities and have duly paid or provided for payment of (or there have been paid
on their behalf) all Taxes due or claimed to be due from them by federal, state,
local or foreign taxing authorities, excluding Taxes that are being contested in
good faith by appropriate proceedings and as to which adequate reserves have
been provided in the AROC Financial Statements.

     (b)  There are no tax liens upon any property or assets owned by any of the
AROC Entities that would have a Material Effect.

     (c)  All Tax Returns of the AROC Entities filed, including any amendments
to date, have been prepared in good faith without willful misrepresentation and
are complete and accurate in all material respects. The federal income tax
returns of the AROC Entities have been examined by the Internal Revenue Service
for all periods described in Section 4.12 of the AROC Disclosure Schedule, and
all deficiencies assessed as a result of such examination have been paid in full
or finally settled and no issue has been raised by the Internal Revenue Service
in any such examination that has been resolved adversely to any of the AROC
Entities or is still pending and, by application of similar principles,
reasonably could be expected to result in an assertion by the Internal Revenue
Service of a material deficiency in any other taxable year or with respect to
any other of the AROC Entities. There are no outstanding agreements, waivers or
other arrangements providing for an extension of time with respect to the filing
of any Tax Returns or the payment by, or assessment against, any of the AROC
Entities for any Taxes.

     (d)  The reserves made for Taxes on the respective balance sheets in the
AROC Financial Statements are sufficient for the payment of all unpaid Taxes due
and payable by the AROC Entities attributable to all periods ended on or before
the date of the respective balance sheets in accordance with GAAP.

     4.13.  Bank Accounts.  AROC has provided Alliance with the names and
            -------------
locations of all bank institutions at which the AROC Entities maintain accounts
or lock boxes of any nature, the account or box number and the names of all
persons authorized to draw thereon or make withdrawals therefrom.

     4.14.  Contracts.
            ---------

     (a)  AROC has made available to Alliance complete and correct copies of all
written agreements, contracts and commitments, together with all amendments
thereto, and accurate (in all material respects) descriptions of all oral
agreements, to which any of the AROC Entities is a party or by which any of
their properties is bound.  Such agreements, contracts and commitments are in
full force and effect, and all of such entities and, to the knowledge of the
AROC Entities, all other parties to such agreements, contracts and commitments
have performed all obligations required to be performed by them to date
thereunder in all material respects and are not in default thereunder in any
material respect.

                                       16
<PAGE>

     (b)  None of the AROC Entities is a party to or bound by any employment,
management, consulting, option, note, loan, lease or other agreements with any
of the officers, directors or shareholders of more than 5% of the outstanding
securities of any of the AROC Entities;

     (c)  None of the AROC Entities is a party to any agreement that, upon or
after completion of the Merger, could result in the creation of any Encumbrance
upon any of the Alliance Assets or any of the assets of AROC Delaware other than
the AROC Assets.

     (d)  None of the AROC Entities has outstanding any powers of attorney,
including powers of attorney with respect to representation before any
Governmental Entity, customs agents and brokers, or given in connection with
qualification to conduct business in any other jurisdiction.

     4.15.  Compensation and Employee Plans.
            -------------------------------

     (a)  AROC has provided Alliance (i) the names and current annual
compensation rates of all present directors, officers, employees, independent
contractors or agents of each of the AROC Entities and (ii) the number, job
category and range of compensation by job category of all employees of such
entities.

     (b)  AROC has made available to Alliance the name of each Plan applicable
to any of the AROC Entities and all documents evidencing any Plan applicable to
any of the AROC Entities.

     (c)  Each Plan applicable to any of the AROC Entities is now, and has been
from its inception, administered in compliance in all material respects with the
provisions of all applicable laws and regulations, including ERISA, the Code and
the ADEA, insofar as such statutes are applicable to such Plan.

     4.16.  Brokers, Finders and Advisors.  AROC has not employed any broker,
            -----------------------------
finder, or investment advisor on its behalf, or incurred any liability for any
brokerage or finder's fees or commissions in connection with the transaction
contemplated hereby.

     4.17.  Labor Force.  Each of the AROC Entities is in compliance in all
            -----------
material respects with all applicable laws (including without limitation federal
income tax laws), ordinances, regulations, statutes, rules and restrictions of
any Governmental Entity respecting employment and employment practices and terms
and conditions of employment.

     4.18.  Books and Records.  The books and records of each of the AROC
            -----------------
Entities (including, without limitation, the books of account, minute books and
stock record books) are complete and correct in all material respects and have
been maintained in accordance with sound business practices. The minute books of
each of the AROC Entities contain accurate and complete records in all material
respects of all meetings held of, and corporate action taken by, the
shareholders and the Boards of Directors of the respective entities and no
meetings of or actions by such shareholders or any such Boards of Directors have
been held or taken for which minutes have not been prepared and are not
contained in such minute books. None of the records and written documents
furnished or made available to Alliance's representatives or agents by the AROC
Entities concerning the AROC Assets, when considered in context and together
with any relevant or related documents also so furnished or made available,
contain any untrue statement of material fact or omit a material fact necessary
to make any statement therein not misleading.

                                       17
<PAGE>

     4.19.  Payments.  None of the AROC Entities has, directly or indirectly,
            --------
paid or delivered any fee, commission or other sum of money or item of property
however characterized to any finder, agent, government official or other party,
in the United States or any other country, in any manner related to its business
or operations, which such entity knows or has reason to believe to have been
illegal under any federal, state or local laws of the United States or any other
country or territory having jurisdiction over such entity, and has not
participated, directly or indirectly, in any boycotts or similar practices.

     4.20.  Commission Filings.  AROC has filed all forms, reports and documents
            ------------------
required to be filed with the Commission since January 1, 1996 .  All of such
filings were prepared in accordance with the requirements of all applicable laws
and did not at the time they were filed contain any untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary in order to make the statements therein, in the light of the
circumstances under which they were made, not misleading.

     4.21.  Disclosure.  No representation or warranty made by AROC in this
            ----------
Agreement (including, without limitation, in the AROC Disclosure Schedule)
contains any untrue statement of material fact or omits or will omit to state
any material fact necessary to make the statements herein or therein not
misleading in light of the circumstances under which made.

 5.  Representations, Warranties and Covenants of Alliance.
     -----------------------------------------------------

     Except as expressly set forth and specifically identified by section number
of this Agreement in the Alliance Disclosure Schedule, Alliance represents,
warrants and covenants to AROC, on the date hereof and as of the Mailing Date,
as follows:

     5.1.   Organization, etc.
            -----------------

     (a)  Alliance is a public limited company duly incorporated and validly
existing under the laws of England and Wales.

     (b)  Each of Alliance's U.K. Subsidiaries is a limited  company duly
incorporated and validly existing under the laws of England and Wales.  Each of
Alliance's other Subsidiaries is a corporation duly organized, validly existing
and in good standing under the laws of its jurisdiction of incorporation.

     (c)  Each of the Alliance Entities has the requisite corporate power and
authority to carry on its business as now being conducted and to own, lease and
operate its property and assets, and each of the United States Alliance Entities
is duly qualified or licensed to do business and is in good standing in every
jurisdiction in which the failure to be so qualified and licensed could have a
Material Effect.

     (d)  Alliance has delivered or made available to AROC true, correct and
complete copies of the organizational documents of each of the Alliance Entities
as presently in effect.

                                       18
<PAGE>

     5.2.   Capitalization.
            --------------

     (a)  The authorized capital stock of Alliance consists of 415,001,376
ordinary shares of (Pounds)0.01 each, 47,487,142 of which are issued and
outstanding, 10,000,000 shares of Alliance Convertible Stock, of which
10,000,000 are issued and outstanding and 1,414,998,624 deferred shares of 1p
each of which 1,217,166,912 are issued and outstanding.  There are outstanding
options to subscribe for 3,040,000 Alliance Ordinary Shares at subscription
prices varying from 13.5p to (Pounds)3.00.  There are outstanding warrants to
purchase 5,079,149 Alliance Ordinary Shares at purchase prices varying from 1p
to (Pounds)1.00 per share and outstanding convertible loan notes that are
convertible into 1,078,125 Alliance Common Shares at any time upon the payment
by the holder to Alliance of 1p per share. All of the issued shares of each of
the Alliance Entities are validly issued, fully paid and nonassessable and none
of such shares have been or will be issued in violation of the preemptive rights
of any person.

     (b)  Except as described in Section 5.2(a), there are no (i) shares of
capital stock or other securities bearing voting or other equity rights, whether
contingent or not, of any of the Alliance Entities outstanding; (ii) outstanding
subscriptions, puts, options, warrants or other rights, contract  ual or
otherwise, to purchase or acquire any capital stock of any of the Alliance
Entities; or (iii) contracts, commitments, understandings, arrangements or
restrictions by which any of the Alliance Entities is or may become bound to
issue any additional equity interests or any options or rights with respect
thereto, or any securities convertible into any equity interests.

     (c)  The issued and outstanding stock of Alliance owned by the directors
and 5% or greater stockholders of Alliance is owned of record, and to the
knowledge of Alliance, beneficially, as described in the Alliance Proxy
Statement. Alliance beneficially owns all of the issued and outstanding stock of
each of its Subsidiaries, directly or indirectly, free and clear of all
Encumbrances. Except for its Subsidiaries, neither Alliance nor any of its
Subsidiaries owns or holds any equity, debt or other interest in any entity or
business or any option to acquire any such interest, except for accounts
receivable that have arisen in the ordinary course of business.

     5.3.   Authority; No Violation.
            -----------------------

     (a)  The execution and performance of this Agreement by Alliance have been
duly and validly authorized by the board of directors of Alliance and no other
corporate action is necessary to authorize the execution, delivery and
performance of this Agreement by Alliance.  Alliance has full, absolute and
unrestricted right, power and authority to execute and perform this Agreement
and to carry out the transactions contemplated hereby.  This Agreement has been
duly and validly executed by Alliance and is a valid and binding obligation of
Alliance, enforceable in accordance with its terms, except as enforceability may
be limited by bankruptcy, moratorium, reorganization, receivership or similar
laws affecting the rights of creditors generally.

     (b)  None of the execution, delivery or performance of this Agreement does
or will, after the giving of notice, lapse of time or otherwise, (i) result in
any violation of or be in conflict with or constitute a default under any term
or provision of the organizational documents of any of the Alliance Entities, or
any term or provision of any judgment, decree, order, statute, injunction, rule
or regulation applicable to any of the Alliance Entities or of any material
note, bond, mortgage, indenture, lease, license, franchise, agreement or other
instrument or obligation to which any of the Alliance Entities is bound; (ii)
result in the creation of any material Encumbrance upon Alliance

                                       19
<PAGE>

Shares, any of the AROC Assets or any of the Alliance Assets pursuant to any
such term or provision; or (iii) constitute a material default under or give any
party the right to accelerate, amend or modify, terminate, abandon or refuse to
perform or comply with, any material contract, agreement, arrangement,
commitment or plan to which any of the Alliance Entities is a party, or by which
any of the Alliance Entities or any of their rights, properties or assets may be
subject or bound.

     5.4.   Consents and Approvals.  No consent, waiver, approval or
            ----------------------
authorization of, or declaration, designation, filing, registration or
qualification with, any Governmental Entity or any third party, is required to
be made or obtained by any of the Alliance Entities in connection with the
execution, delivery and performance of this Agreement or to preserve any
material rights and benefits enjoyed by any of the Alliance Entities on the date
hereof following the consummation of the transactions contemplated by this
Agreement except (a) those that have already been obtained or (b) those
specifically contemplated by this Agreement.

     5.5.   Violations of Laws, Permits, etc.
            ---------------------------------

     (a)  None of the Alliance Entities is in violation of any term or provision
of its organizational documents.  None of the Alliance Entities is in violation
of any term or provision of any judgment, decree, order, statute, injunction,
rule, ordinance or regulation applicable to it, or of any agreement or
instrument applicable to such entity where the violation thereof would result in
a Material Effect.

     (b)  Each of the Alliance Entities holds and has maintained in full force
and effect all certificates, licenses and permits material to the conduct of its
business, and has not received any notification that any revocation or
limitation thereof is threatened or pending where such revocation or limitation
would result in a Material Effect.

     5.6.   Alliance Reports.  Alliance has made available to AROC each of the
            ----------------
Alliance Reports.  As of their respective dates, the Alliance Reports did not,
and any Alliance Reports filed with the Commission subsequent to the date of
this Agreement will not, contain any untrue statement of a material fact or omit
to state a material fact required to be stated therein or necessary to make the
statements made therein, in light of the circumstances in which they were made,
not misleading.

     5.7.   Alliance Financial Statements.
            -----------------------------

     (a)  In all material respects the consolidated Alliance Financial
Statements fairly present the consolidated assets, liabilities and financial
position of the respective entities purported to be covered thereby as of the
dates thereof and the results of their operations and cash flow for the
respective periods ended on such dates, all in conformity with GAAP consistently
applied, except that the January 31, 1999, unaudited interim financial
statements do not contain footnotes (that, if presented, would not differ
materially from those in the audited Alliance Financial Statements) and are
subject to normal, recurring year-end adjustments (which will not, individually
or in the aggregate, have a Material Effect).

     (b)  The Alliance Financial Statements were prepared from the books and
records of each of the respective entities purported to be covered thereby.
Such Alliance Financial Statements do not contain any items of a material
special or nonrecurring nature, except as expressly noted in such statements.

                                       20
<PAGE>

     5.8.   No Undisclosed Liabilities, etc.  None of the Alliance Entities has
            --------------------------------
any material liabilities or obligations, whether direct, indirect, absolute or
contingent (including, without limitation, liabilities as guarantor or otherwise
with respect to obligations of others), except (a) liabilities that are fully
reflected on or reserved against on the latest balance sheet of such entity
included in the Alliance Financial Statements or (b) liabilities incurred in the
ordinary course of business since the date of the latest balance sheet included
in the Alliance Financial Statements that are consistent with past practice.

     5.9.   Absence of Certain Changes.  Since the date of the latest audited
            --------------------------
Alliance Financial Statement, except as specifically disclosed in the January
31, 1999, unaudited interim consolidated Alliance Financial Statements, none of
the Alliance Entities has:

     (a)  Suffered any change that would result in a Material Effect;

     (b)  Borrowed any money or incurred, assumed or become subject to, whether
directly or by way of guarantee or otherwise, any other material obligation or
liability for borrowed money, whether absolute or contingent;

     (c)  (i) Issued, purchased or redeemed any of its capital securities or any
option, warrant or right to purchase any of the same; or (ii) authorized,
declared or made any dividends, distributions of earnings or capital on, or
splits or any other reclassification of its equity securities;

     (d)  Acquired any material assets or properties, other than oil and gas
production in the ordinary course of business, or other assets having a value in
excess of $100,000 in the aggregate;

     (e)  Increased the salaries, compensation, pension or other benefits
payable, or paid any bonuses, to its officers and directors or their Affiliates;

     (f)  Agreed, either in writing or otherwise, to take any action described
in this Section 5.9.
        -----------

     5.10.  Data Regarding the Alliance Assets.  All of the information made or
            ----------------------------------
to be made available to AROC and its representatives regarding the Alliance
Assets is accurate and complete in all material respects, when considered in
context and together with all relevant information made available.

     5.11.  Litigation.
            ----------

     (a)  There is no action, proceeding, investigation or inquiry pending or,
to the knowledge of the Alliance Entities, threatened (i) against or affecting
any of the Alliance Entities or their assets or ordinary conduct of the business
that, if determined adversely to the Alliance Entities, would result in a
Material Effect, except as described in the Alliance Reports, or (ii) that
questions this Agreement or any action contemplated by this Agreement or the
transactions contemplated hereby.

     (b)  There are no citations, fines or penalties heretofore asserted against
any of the Alliance Entities or their assets under any federal, state or local
law relating to air, noise or water pollution or other environmental protection
matters, or relating to occupational health or safety, of which such

                                       21
<PAGE>

entity has received notice and that remain unpaid or that could otherwise bind
the assets of any of the Alliance Entities and that would result in a Material
Effect.

     (c)  Alliance has no knowledge of any state of facts or of the occurrence
or nonoccurrence of any event or group of related events, that should reasonably
cause Alliance to determine that there exists any basis for any material claim
against the Alliance Entities for any of the matters described in paragraphs (a)
or (b).

     5.12.  Tax Returns and Payments.
            ------------------------

     (a)  The Alliance Entities (or the common parent of any affiliated group of
which any of such entities is or has been a member) have duly filed in correct
form in all material respects all Tax Returns required to be filed by such
entities and have duly paid or provided for payment of (or there have been paid
on their behalf) all Taxes due or claimed to be due from them by federal, state,
local or foreign taxing authorities, excluding Taxes that are being contested in
good faith by appropriate proceedings and as to which adequate reserves have
been provided in the Alliance Financial Statements.

     (b)  There are no tax liens upon any property or assets owned by any of the
Alliance Entities that would have a Material Effect.

     (c)  All Tax Returns of the Alliance Entities filed, including any
amendments to date, have been prepared in good faith without willful
misrepresentation and are complete and accurate in all material respects.  The
federal income tax returns of the Alliance Entities have been examined by the
Internal Revenue Service for all periods described in Section 5.12 of the
Alliance Disclosure Schedule, and all deficiencies assessed as a result of such
examination have been paid in full or finally settled and no issue has been
raised by the Internal Revenue Service or other relevant tax authority in any
such examination that has been resolved adversely to any of the Alliance
Entities or is still pending and, by application of similar  principles,
reasonably could be expected to result in an assertion by the Internal Revenue
Service or other relevant tax authority of a material deficiency in any other
taxable year or with respect to any other of the Alliance Entities. There are no
outstanding agreements, waivers or other arrangements providing for an extension
of time with respect to the filing of any Tax Returns or the payment by, or
assessment against, any of the Alliance Entities for any Taxes.

     (d)  The reserves made for Taxes on the respective balance sheets in the
Alliance Financial Statements are sufficient for the payment of all unpaid Taxes
due and payable by the Alliance Entities attributable to all periods ended on or
before the date of the respective balance sheets in accordance with GAAP.

     5.13.  Contracts.
            ---------

     (a)  Alliance has made available to AROC complete and correct copies of all
written agreements, contracts and commitments, together with all amendments
thereto, and accurate (in all material respects) descriptions of all oral
agreements, in all cases, to which any of the Alliance Entities is a party or by
which any of their properties is bound.  Such agreements, contracts and
commitments are in full force and effect, and all of such entities and, to the
knowledge of the Alliance Entities, all other parties to such agreements,
contracts and commitments have performed

                                       22
<PAGE>

all obligations required to be performed by them to date thereunder in all
material respects and are not in default thereunder in any material respect.

     (b)  None of the Alliance Entities has outstanding any powers of attorney,
including powers of attorney with respect to representation before any
Governmental Entity, customs agents and brokers, or given in connection with
qualification to conduct business in any other jurisdiction.

     5.14.  Compensation and Employee Plans.
            -------------------------------

     (a)  Alliance has provided AROC (i) the names and current annual
compensation rates of all present directors, officers, employees, independent
contractors or agents of each of the Alliance Entities and (ii) the number, job
category and range of compensation by job category of all employees of such
entities.

     (b)  Alliance has made available to AROC the name of each Plan applicable
to any of the Alliance Entities and all documents evidencing any Plan applicable
to any of the Alliance Entities.

     (c)  Each Plan applicable to any of the Alliance Entities is now, and has
been from its inception, administered in compliance in all material respects
with the provisions of all applicable laws and regulations, including ERISA, the
Code and the ADEA, insofar as such statutes are applicable to such Plan.

     5.15.  Brokers, Finders and Advisors.  Alliance has not employed any
            -----------------------------
broker, finder, or investment advisor on its behalf, or incurred any liability
for any brokerage or finder's fees or commissions in connection with the
transaction contemplated hereby.

     5.16.  Labor Force.  Each of the Alliance Entities is in compliance in all
            -----------
material respects with all applicable laws (including without limitation federal
income tax laws), ordinances, regulations, statutes, rules and restrictions of
any Governmental Entity respecting employment and employment practices and terms
and conditions of employment.

     5.17.  Books and Records.  The books and records of each of the Alliance
            -----------------
Entities (including, without limitation, the books of account, minute books and
stock record books) are complete and correct in all material respects and have
been maintained in accordance with sound business practices.  The minute books
of each of the Alliance Entities contain accurate and complete records in all
material respects of all meetings held of, and corporate action taken by, the
shareholders and the Boards of Directors of the respective entities and no
meetings of or actions by such shareholders or any such Boards of Directors have
been held or taken for which minutes have not been prepared and are not
contained in such minute books.  None of the records and written documents
furnished or made available to AROC's representatives or agents by the Alliance
Entities concerning the Alliance Assets, when considered in context and together
with any relevant or related documents also so furnished or made available,
contain any untrue statement of material fact or omit a material fact necessary
to make any statement therein not misleading.

     5.18.  Payments.  None of the Alliance Entities has, directly or
            --------
indirectly, paid or delivered any fee, commission or other sum of money or item
of property however characterized to any finder, agent, government official or
other party, in the United States or any other country, in any manner related to
its business or operations, which such entity knows or has reason to believe to
have been

                                       23
<PAGE>

illegal under any federal, state or local laws of the United States or any other
country or territory having jurisdiction over such entity, and has not
participated, directly or indirectly, in any boycotts or similar practices.

     5.19.  Commission Filings.  Alliance has filed all forms, reports and
            ------------------
documents required to be filed with the Commission since May 1, 1997.  All of
such filings were prepared in accordance with the requirements of all applicable
laws and did not at the time they were filed contain any untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary in order to make the statements therein, in the light of the
circumstances under which they were made, not misleading.

     5.20.  Disclosure.  No representation or warranty made by Alliance in this
            ----------
Agreement (including, without limitation, in the Alliance Disclosure Schedule)
contains any untrue statement of material fact or omits or will omit to state
any material fact necessary to make the statements herein or therein not
misleading in light of the circumstances under which made.

6.   Actions of AROC Prior to the Mailing Date.
     -----------------------------------------

     6.1.   Affirmative Covenants.  Prior to the Mailing Date, AROC covenants
            ---------------------
that, unless the prior written consent of Alliance is first obtained, which
consent shall not be unreasonably withheld, the AROC Entities will:

     (a)  Carry on their respective businesses in the usual, regular and
ordinary course in substantially the same manner as heretofore conducted and use
all reasonable efforts to (i) preserve intact their respective present business
organizations, (ii) keep available the services of their respective present
officers and key employees and (iii) preserve their respective relationships
with customers, suppliers and any others having business dealings with them; and

     (b)  Duly comply with all laws applicable to them and their respective
properties, operations, business and employees which if not complied with would
result in a Material Effect.

     6.2.   Negative Covenants.  Prior to the Mailing Date, except with the
            ------------------
prior written consent of Alliance, the AROC Entities will not:

     (a)  Do any of the restricted acts set forth in Section 4.9 hereof, or
                                                     -----------
enter into any agreement of a nature set forth in Section 4.14 hereof;
                                                  ------------

     (b)  Enter into or permit any of the AROC Entities to enter into any
transaction other than in the ordinary course of business; or

     (c)  Amend the respective organizational or governing documents of any of
the AROC Entities.

     6.3.   Consents.  The AROC Entities will use their best efforts to obtain
            --------
all consents from third parties necessary or appropriate to effectuate the
transactions contemplated by this Agreement.

     6.4.   Advice of Changes.  AROC will promptly advise Alliance in writing
            -----------------
from time to time prior to the Mailing Date with respect to any matter hereafter
arising and known to it that, if

                                       24
<PAGE>

existing or occurring at the date of this Agreement, would have been required to
be set forth or described in the AROC Disclosure Schedule or would have resulted
in any representation of AROC in this Agreement being untrue.

     6.5.   Best Efforts.  The AROC Entities will use their best efforts to
            ------------
cause to be fulfilled those of the conditions to Alliance's obligations to
consummate the transactions contemplated by this Agreement that are dependent
upon their actions and to execute and deliver such instruments and take such
other actions as necessary or appropriate in order to carry out the intent of
this Agreement.

     6.6.   Access to Properties and Records.  From and after the date of this
            --------------------------------
Agreement through the earlier of the Mailing Date or the termination of this
Agreement, the AROC Entities shall (a) provide Alliance an identification of and
access to all books, records and documents, including contracts, agreements,
consents, settlements, revenue and expense information, and all other data and
information relating to the AROC Assets, (b) afford to Alliance and their
officers, attorneys, accountants and other authorized representatives free and
full access during normal business hours to the offices, properties, books and
records of the AROC Entities, and (c) cause counsel and accountants to the AROC
Entities to furnish such additional financial and operating data and other
information as Alliance shall from time to time request in order that Alliance
may have full opportunity to make such investigation as they shall desire to
make of the affairs of the AROC Entities and their assets.

     6.7.   Supply Documents, Reports, etc.
            -------------------------------

     (a)  AROC shall furnish or make available to Alliance all documents,
reports and other information and data (including financial statements)
concerning the AROC Entities as Alliance may reasonably require in connection
with any statement, application, or document required to be filed with
applicable Governmental Entities in connection with the transactions
contemplated by this Agreement or furnished to any other person, firm,
corporation or Governmental Entity in connection with this Agreement, including,
but not limited to the Commission, the Federal Trade Commission and the
Department of Justice.

     (b)  AROC represents and warrants that all such information shall be true,
correct, and complete in all material respects and shall not omit any material
fact required to be stated to make such information not misleading in light of
the circumstances under which made.

     6.8.   AROC Disclosure Schedule.  AROC agrees to deliver the AROC
            ------------------------
Disclosure Schedule to Alliance within seven calendar days after the execution
of the Agreement by all parties.

7.   Actions of Alliance Prior to the Mailing Date.
     ---------------------------------------------

     7.1.   Affirmative Covenants.  Prior to the Mailing Date, Alliance
            ---------------------
covenants that, unless the prior written consent of AROC is first obtained,
which consent shall not be unreasonably withheld, the Alliance Entities will:

     (a)  Carry on their respective businesses in the usual, regular and
ordinary course in substantially the same manner as heretofore conducted and use
all reasonable efforts to (i) preserve intact their respective present business
organizations, (ii) keep available the services of their

                                       25
<PAGE>

respective present officers and key employees and (iii) preserve their
respective relationships with customers, suppliers and any others having
business dealings with them; and

     (b)  Duly comply with all laws applicable to them and their respective
properties, operations, business and employees which if not complied with would
result in a Material Effect.

     7.2.   Negative Covenants.  Prior to the Mailing Date, except with the
            ------------------
prior written consent of AROC, the Alliance Entities will not:

     (a)  Do any of the restricted acts set forth in Section 5.9 hereof, or
                                                     -----------
enter into any agreement of a nature set forth in Section 5.13 hereof;
                                                  ------------

     (b)  Enter into or permit any of the Alliance Entities to enter into any
transaction other than in the ordinary course of business; or

     (c)  Amend the respective organizational or governing documents of any of
the Alliance Entities.

     7.3.   Consents.  The Alliance Entities will use their best efforts to
            --------
obtain all consents from third parties necessary or appropriate to effectuate
the transactions contemplated by this Agreement.

     7.4.   Advice of Changes.  Alliance will promptly advise AROC in writing
            -----------------
from time to time prior to the Mailing Date with respect to any matter hereafter
arising and known to it that, if existing or occurring at the date of this
Agreement, would have been required to be set forth or described in the Alliance
Disclosure Schedule or would have resulted in any representation of Alliance in
this Agreement being untrue.

     7.5.   Best Efforts.  The Alliance Entities will use their best efforts to
            ------------
cause to be fulfilled those of the conditions to AROC's obligations to
consummate the transactions contemplated by this Agreement that are dependent
upon their actions and to execute and deliver such instruments and take such
other actions as necessary or appropriate in order to carry out the intent of
this Agreement.

     7.6.   Access to Properties and Records.  From and after the date of this
            --------------------------------
Agreement through the earlier of the Mailing Date or the termination of this
Agreement, the Alliance Entities shall (a) provide AROC an identification of and
access to all books, records and documents, including contracts, agreements,
consents, settlements, maps, revenue and expense information, production data
and geological and geophysical data relating to the Alliance Assets, (b) afford
to AROC and their officers, attorneys, accountants and other authorized
representatives free and full access during normal business hours to the
offices, properties, books and records of the Alliance Entities, and (c) cause
counsel and accountants to the Alliance Entities to furnish such additional
financial and operating data and other information as AROC shall from time to
time request in order that AROC may have full opportunity to make such
investigation as they shall desire to make of the affairs of the Alliance
Entities and their assets.

     7.7.   Supply Documents, Reports, etc.
            -------------------------------

     (a)  Alliance shall furnish or make available to AROC all documents,
reports and other information and data (including financial statements)
concerning the Alliance Entities as AROC may

                                       26
<PAGE>

reasonably require in connection with any statement, application, or document
required to be filed with applicable Governmental Entities in connection with
the transactions contemplated by this Agreement or furnished to any other
person, firm, corporation or Governmental Entity in connection with this
Agreement, including, but not limited to the Commission, the Federal Trade
Commission and the Department of Justice.

     (b)  Alliance represents and warrants that all such information shall be
true, correct, and complete in all material respects and shall not omit any
material fact required to be stated to make such information not misleading in
light of the circumstances under which made.

     7.8.   Alliance Disclosure Schedule.  Alliance agrees to deliver the
            ----------------------------
Alliance Disclosure Schedule to AROC within seven calendar days after the
execution of the Agreement by all parties.

8.   Conditions to Alliance's Obligations.  Each and every obligation of
     ------------------------------------
Alliance  under this Agreement to be performed on or before the Mailing Date is,
at the option of Alliance, subject to the satisfaction on or before the date on
which the formal press announcement of the Offer pursuant to the City Code is
made (following which the Offer shall be subject only to the conditions set out
in the press announcement, including the completion of the Merger) of each of
the following conditions:

     (a)  All outstanding options or rights to purchase or acquire AROC Shares
shall have been canceled.

     (b)  All employment, management, consulting, option, note, loan, lease or
other agreements with any of the officers, directors or shareholders of more
than 5% of the outstanding securities of any of the AROC Entities shall have
been terminated without liability to Alliance, AROC or AROC Delaware.  All
amounts owed to AROC by any officer, director or shareholder of more than 5% of
the outstanding securities of any of the AROC Entities shall have been repaid in
full.

     (c)  The agreements described in Sections 10.4, 10.5 and 10.6 shall have
                                      -------------  ----     ----
been entered into and the actions required by Section 10.7 shall have occurred.
                                               ------------

     (d)  (i) All of the terms, covenants and conditions of this Agreement to be
complied with or performed by AROC at or before the Mailing Date shall have been
duly complied with and performed in all material respects, (ii) the
representations and warranties of AROC set forth in Article 4, as modified by
                                                    ---------
the statements contained in the AROC Disclosure Schedule, shall be true in all
material respects on and as of the Mailing Date with the same force and effect
as if such representations and warranties had been made on and as of the Mailing
Date (but this provision shall not mean that representations and warranties
relating to a specific date, shall relate to any other date) and (iii) Alliance
shall have received a certificate to such effect from an officer of AROC.
Whether the conditions in subparagraphs (i) and (ii) above have been satisfied
shall be determined without regard to any materiality qualifications or
provisions contained in any such covenants, representations or warranties.

     (e)  All consents, waivers, approvals, licenses, authorizations of, or
filings or declarations with third parties or Governmental Entities required to
be obtained by the AROC Entities in order to permit the transactions
contemplated by this Agreement to be consummated in accordance with governmental
laws, rules, regulations and agreements shall have been obtained, and the
registration

                                       27
<PAGE>

statement required by Section 2.1(a) shall be effective under the Securities
                      --------------
Act, no stop orders suspending the effectiveness of the registration statement
shall have been issued, no action, suit, proceeding or investigation by the
Commission to suspend the effectiveness thereof shall have been initiated and be
continuing, and all necessary approvals under state securities laws or the
Securities Act or the Securities Exchange Act of 1934 relating to the issuance
or trading of the Alliance Shares issuable pursuant to the Offer shall have been
received.

     (f)  Alliance shall have received the opinion of counsel for AROC, dated
the Mailing Date, in substance and form acceptable to Alliance and its counsel.

     (g)  All actions, proceedings, instruments and documents in connection with
the consummation of the transactions contemplated by this Agreement, including
the forms of all documents, legal matters, opinions and procedures in connection
therewith, shall have been approved in form and substance by counsel for
Alliance, which approval shall not be unreasonably withheld.

     (h)  The AROC Entities shall have furnished such certificates to evidence
compliance with the conditions set forth in this Article, as may be reasonably
requested by Alliance or its counsel.

     (i)  There shall not have been any material loss resulting from destruction
of the AROC Assets due to acts of God, fire, explosion or other casualty which
is not reimbursable in all material respects under policies of insurance
maintained by or for the benefit of the AROC Entities.

     (j)  No material information or data provided or made available to Alliance
by or on behalf of AROC shall be incorrect in any material respect.

9.   Conditions to AROC's Obligations.  Each and every obligation of AROC under
     --------------------------------
     this Agreement to be performed on the Mailing Date is, at the option of
     AROC, subject to the satisfaction on or before the date on which the formal
     press announcement of the Offer pursuant to the City Code is made
     (following which the Offer shall be subject only to the conditions set out
     in the press announcement, including the completion of the Merger) of each
     of the following conditions:

     (a)  The agreements described in Sections 10.4, 10.5 and 10.6 shall have
                                      -------------  ----     ----
been entered into and the actions required by Section 10.7 shall have occurred.
                                              ------------

     (b)  (i)  All of the terms, covenants and conditions of this Agreement to
be complied with or performed by Alliance at or before the Mailing Date shall
have been duly complied with and performed in all material respects, (ii) the
representations and warranties of Alliance set forth in Article 5, as modified
                                                        ---------
by the statements contained in the Alliance Disclosure Schedule, shall be true
in all material respects on and as of the Mailing Date with the same force and
effect as if such representations and warranties had been made on and as of the
Mailing Date (but this provision shall not mean that representations and
warranties relating to a specific date shall relate to any other date), and
(iii) AROC shall have received a certificate to such effect from an officer of
each of Alliance at Mailing Date. Whether the conditions in subparagraphs (i)
and (ii) above have been satisfied shall be determined without regard to any
materiality qualifications or provisions contained in any such covenants,
representations or warranties.

     (c)  All consents, waivers, approvals, licenses, authorizations of, or
filings or declarations with third parties or Governmental Entities required to
be obtained by Alliance in order to permit

                                       28
<PAGE>

the transactions contemplated by this Agreement to be consummated in accordance
with governmental laws, rules, regulations and agreements shall have been
obtained, and the registration statement required by Section 2.1(a) shall be
                                                     --------------
effective under the Securities Act, no stop orders suspending the effectiveness
of the registration statement shall have been issued, no action, suit,
proceeding or investigation by the Commission to suspend the effectiveness
thereof shall have been initiated and be continuing, and all necessary approvals
under state securities laws or the Securities Act or the Securities Exchange Act
of 1934 relating to the of the Alliance Shares pursuant to this Agreement shall
have been received.

     (d)  AROC shall have received opinions from counsel for Alliance dated the
Mailing Date, in substance and form acceptable to AROC and its counsel.

     (e)  All outstanding options or other rights to purchase or acquire AROC
Shares (other than the Warrants) shall have been canceled without further
liability to AROC or Alliance.

     (f)  All actions, proceedings, instruments and documents in connection with
the consummation of the transactions contemplated by this Agreement, including
the forms of all documents, legal matters, opinions and procedures in connection
therewith, shall have been approved in form and substance by counsel for AROC,
which approval shall not be unreasonably withheld.

     (g)  Alliance shall have furnished such certificates of its officers and
others to evidence compliance with the conditions set forth in this Article, as
may be reasonably requested by AROC or its counsel.

     (h)  There shall not have been any material loss resulting from destruction
of the Alliance Assets due to acts of God, fire, explosion or other casualty
which is not reimbursable in all material respects under policies of insurance
maintained by or for the benefit of the Alliance Entities.

     (i)  No material information or data provided or made available to AROC by
or on behalf of Alliance shall be incorrect in any material respect.

10.  Additional Agreements.
     ---------------------

     10.1.  Confidentiality.  The parties hereto will, and will cause their
            ---------------
officers, directors, employees and authorized representatives to, hold in
confidence all, and not to use or to disclose to others any, nonpublic
information received by them from another party hereto in connection with the
transactions contemplated by this Agreement; provided, however, the foregoing
shall not restrict necessary disclosures in compliance with requirements of any
law, governmental order or regulation, the City Code or the rules of the London
Stock Exchange.

     10.2.  Further Assurances.  After the Mailing Date, the parties shall
            ------------------
execute, acknowledge and deliver or cause to be executed, acknowledged and
delivered such instruments and take such other action including payment of
monies as may be necessary or advisable to carry out their obligations under
this Agreement and under any document, certificate or other instrument delivered
pursuant hereto or required by law.  If at any time subsequent to the Mailing
Date, any party comes into possession of money or property belonging to another
party, such money or property shall be promptly turned over to the party
entitled thereto.

                                       29
<PAGE>

     10.3.  Offices.  After the Offer becomes unconditional, the executive
            -------
offices of AROC shall be located in Tulsa, Oklahoma.

     10.4.  Warrants.  On or prior to the Mailing Date, AROC Delaware shall
            --------
enter into warrant agreements with the holders of Alliance Warrants, on terms
satisfactory to Alliance, providing that, after the Offer becomes unconditional,
those warrants will represent the right to receive one AROC Delaware Share in
lieu of each Alliance Ordinary Share that they currently represent the right to
receive.

     10.5.  Convertible Shares.  On or prior to the Mailing Date, AROC Delaware
            ------------------
shall enter into agreements with the holders of the Alliance Convertible Shares,
on terms satisfactory to Alliance, providing that after the then outstanding
Alliance Convertible Shares are tendered pursuant to the Offer and the Offer
becomes unconditional, each then outstanding Alliance Convertible Share shall be
exchanged for 0.5 AROC Delaware Shares and the right to receive additional AROC
Delaware Shares on terms substantially similar to the terms of the Alliance
Convertible Shares.

     10.6.  Convertible Loan Notes.  On or prior to the Mailing Date, AROC
            ----------------------
Delaware shall enter into agreements with the holders of the Alliance
Convertible Loan Notes, on terms satisfactory to Alliance, providing that after
the Offer becomes unconditional, the then outstanding Alliance Convertible Loan
Notes shall be exchanged for notes convertible into one AROC Delaware Share in
lieu of each Alliance Ordinary Share that they currently represent the right to
receive, on terms substantially similar to the terms of the Alliance Convertible
Loan Notes.

     10.7.  AROC Delaware Capitalization.  On or prior to the Mailing Date, AROC
            ----------------------------
Delaware shall revise its Certificate of Incorporation to provide that the
authorized capital stock of AROC Delaware shall consist of 175,000,000 shares of
common stock, par value $0.001 per share, 100 of which shall be issued and
outstanding, and 10,000,000 shares of preferred stock, par value $0.001 per
share, none of which shall be issued and outstanding.

     10.8.  Indemnification.
            ---------------

     (a)  Alliance agrees to indemnify and hold harmless each officer and
director of AROC (the "Indemnified Parties") from and against any and all
losses, claims, damages, liabilities and expenses arising out of or based upon
any untrue statement or alleged untrue statement of a material fact contained in
(i) the documents referred to in Sections 2.1 and 2.2 (or any amendment or
                                 ------------     ---
supplement to any of them) and (ii) any other document or correspondence
prepared by or on behalf of Alliance and furnished to the AROC shareholders or
Alliance shareholders pursuant to this Agreement, or arising out of or based
upon any omission or alleged omission to state therein a material fact required
to be stated therein or necessary to make the statements therein not misleading,
except insofar as such losses, claims, damages, liabilities or expenses arise
out of or are based upon any untrue statement or omission or alleged untrue
statement or omission which has been made therein or omitted therefrom in
reliance upon and in conformity with information provided by AROC or the
Indemnified Parties.

     (b)  If any action, suit or proceeding shall be brought against any
Indemnified Person in respect of which indemnity may be sought against Alliance
pursuant to Section 10.8(a), the Indemnified Party shall promptly notify
            ---------------
Alliance and Alliance shall assume the defense thereof, including the employment
of counsel and payment of all fees and expenses.  Alliance shall not settle

                                       30
<PAGE>

any such action, suit or proceeding without the prior written consent of the
Indemnified Party unless such settlement includes an unconditional release of
the Indemnified Party from all liability on claims that are the subject matter
of such action, suit or proceeding. Alliance shall not be liable for any
settlement of any such action, suit or proceeding effected without its written
consent.

11.  Termination, Waiver and Amendment.
     ---------------------------------

     11.1.  Termination.  This Agreement and the transactions contemplated
            -----------
herein may be terminated and abandoned at any time on or prior to the date on
which the formal press announcement of the Offer pursuant to the City Code is
made.

     (a)  By mutual consent of AROC and Alliance; or

     (b)  By Alliance if:

          (1)  Any representation, warranty or covenant made herein for the
     benefit of Alliance or any certificate, schedule or document furnished to
     Alliance pursuant to this Agreement is untrue in any material respect
     (without regard to any materiality or knowledge qualifications or
     provisions contained in such representation, warranty or covenant) and such
     breach is not cured within ten (10) days of AROC's receipt of a notice from
     Alliance that such breach exists or has occurred;

          (2)  AROC shall have defaulted in any material respect (without regard
     to any materiality qualifications or provisions contained in such
     representation, warranty or covenant) in performance of any material
     obligation under this Agreement and such breach is not cured within ten
     (10) days of AROC's receipt of a notice from Alliance that such breach
     exists or has occurred; or

          (3)  Consummation of the transactions contemplated by this Agreement
     would violate any nonappealable final order, decree or judgment of any
     court or governmental body having competent jurisdiction; or

     (c)  By AROC if:

          (1)  Any representation, warranty or covenant made herein for the
     benefit of AROC or any certificate, schedule or document furnished to AROC
     pursuant to this Agreement is untrue in any material respect (without
     regard to any materiality or knowledge qualifications or provisions
     contained in such representation, warranty or covenant) and such breach is
     not cured within ten (10) days of Alliance's receipt of a notice from AROC
     that such breach exists or has occurred;

          (2)  Alliance shall have defaulted in any material respect (without
     regard to any materiality qualifications or provisions contained in such
     representation, warranty or covenant) in performance of any material
     obligation under this Agreement and such breach is not cured within ten
     (10) days of Alliance's receipt of a notice from AROC that such breach
     exists or has occurred; or

                                       31
<PAGE>

          (3)  Consummation of the transactions contemplated by this Agreement
     would violate any nonappealable final order, decree or judgment of any
     court or governmental body having competent jurisdiction; or

     (d)  By AROC in its sole discretion within seven calendar days after its
receipt of the Alliance Disclosure Schedule or by Alliance in its sole
discretion within seven calendar days after its receipt of the AROC Disclosure
Schedule; or

     (e)  By either party if the Mailing Date does not occur on or before
December 31, 1999 (or such later date as may be mutually agreed upon by the
parties hereto), and such party has complied with the provisions of Section 6.5
                                                                    -----------
or Section 7.5, as the case may be.
   -----------

     11.2.  Manner of Exercise.  In the event of termination and abandonment by
            ------------------
Alliance or AROC, or both, authorized by Section 11.1, written notice thereof
                                         ------------
shall forthwith be given to the other parties and this Agreement shall terminate
and the transactions contemplated hereunder shall be abandoned without further
action by the parties.

     11.3.  Effect of Termination. In the event of the termination and
            ---------------------
abandonment authorized by Section 11.1, then, this Agreement shall become void
                          ------------
and have no effect, without any liability on the part of any of the parties or
their directors or officers or stockholders in respect of this Agreement and the
transactions contemplated hereby, except for the confidentiality obligation of
Section 10.1 and this Section 11.3.
- ------------          ------------

12.  Miscellaneous.
     -------------

     12.1.  Survival.  Except for Sections 2.1 through 2.3 and this Article 12,
            --------              ------------         ---          ----------
the representations, warranties, covenants and agreements of the parties to this
Agreement shall not survive after the Offer becomes unconditional and shall
thereafter be of no further force and effect for any purpose.

     12.2.  Expenses.  Except as otherwise provided herein, the parties shall
            --------
each pay their own expenses and costs in connection with this Agreement and the
transactions contemplated hereby.

     12.3.  Press Releases.  Subject to the requirements of law, regulatory
            --------------
bodies, the City Code and the rules of the London Stock Exchange, no party shall
make any public announcement or press release with respect to this transaction
without first consulting with the other parties and giving such parties the
opportunity to review and comment thereon.

     12.4.  Binding Effect.  This Agreement and all of the provisions hereof
            --------------
shall be binding upon and inure to the benefit of the parties hereto and their
respective successors and permitted assigns. Neither this Agreement nor any of
the rights, interests or obligations hereunder shall be assigned by any party
without the prior written consent of the others. Nothing contained herein,
express or implied, is intended to confer on any person other than the parties
hereto or their respective successors and permitted assigns, any rights,
remedies, obligations or liabilities under or by reason of this Agreement.

     12.5.  Severability.  Any provision of this Agreement that is prohibited or
            ------------
unenforceable in any jurisdiction shall, in such jurisdiction, be ineffective to
the extent of such prohibition or unenforceability without invalidating the
remaining provisions hereof, and any such prohibition or

                                       32
<PAGE>

unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

     12.6.  Notices.  Any notice, request, instructions or other document to be
            -------
given hereunder to any party shall be in writing, sent by facsimile transmission
or delivered personally or by courier or sent by certified mail, postage
prepaid, as follows:

  If to AROC (prior to the completion of the Offer):

     American Rivers Oil Company
     700 East 9/th/ Avenue
     Denver, Colorado 80203
     Attn:  Karlton Terry, President
     FAX:   (303)832-2404

  If to Alliance (prior to completion of the Offer):

     Alliance Resources PLC
     4200 East Skelly Drive
     Suite 1000
     Tulsa, Oklahoma 74135
     Attn: John A. Keenan, Managing Director
     FAX: (918) 494-4918

Any party may change its address for purposes of this Section by giving written
notice of such change of address to the other parties in the manner herein
provided for giving notice.  Any notice or communication hereunder shall be
deemed to have been given when (i) deposited in the United States mail, if by
certified mail, and (ii) received, if delivered personally or by courier or
facsimile transmission.

     12.7.  Entire Agreement.  This Agreement (including the instruments between
            ----------------
the parties referred to herein and any waivers delivered pursuant hereto)
constitutes the entire agreement among the parties and supersedes all other
prior agreements and understandings, both written and oral, among the parties,
or any of them, with respect to the subject matter hereof.  The exhibits and
schedules are a part of this Agreement as if fully set forth herein.  All
references to articles, sections, subsections, paragraphs, clauses, exhibits and
schedules shall be deemed references to such part of this Agreement, unless the
context shall otherwise require.

     12.8.  Amendments; Waivers.  No supplement, modification, or amendment of
            -------------------
this Agreement or waiver of any provision of this Agreement will be binding
unless executed in writing by, or on behalf of, all parties to this Agreement.
No waiver of any of the provisions of this Agreement will be deemed or will
constitute a waiver of any other provision of this Agreement (regardless of
whether similar), nor will any such waiver constitute a continuing waiver unless
otherwise expressly provided.

     12.9.  Headings.  Descriptive headings contained herein are for convenience
            --------
of reference only and shall not affect the meaning or interpretation hereof.

                                       33
<PAGE>

     12.10. Counterparts.  This Agreement may be executed in any number of
            ------------
counterparts, each of which shall be deemed to be an original but all of which
together shall constitute but one agreement.

     12.11. Specific Performance.  The parties hereto agree that irreparable
            --------------------
damage would occur if any of the provisions of this Agreement were not performed
in accordance with their specific terms or were otherwise breached.  It is
accordingly agreed that the parties shall be entitled to an injunction or
injunctions to prevent breaches of this Agreement and to enforce specifically
the terms and provision hereof in any court of the United States or any state
having jurisdiction, in addition to any other remedy to which they are entitled
at law or in equity.

     12.12. GOVERNING LAW.  THIS AGREEMENT AND THE LEGAL RELATIONS AMONG THE
            -------------
PARTIES HERETO SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
INTERNAL LAWS OF THE STATE OF OKLAHOMA APPLICABLE TO CONTRACTS MADE AND TO BE
PERFORMED IN THAT STATE, WITHOUT REGARD TO CONFLICT OF LAWS PRINCIPLES.

     12.13. Schedules.  Any item disclosed by any party in the its Disclosure
            ---------
Schedule for one purpose and in response to a specific section of this Agreement
shall not be deemed disclosed for any other purpose and in response to any other
section of the Agreement unless specifically so stated.

     12.14. Time of Essence.  Time is of the essence of the parties' obligations
            ---------------
to consummate the transactions contemplated by this Agreement on the Mailing
Date.

     12.15. Best Efforts.  No provision of this Agreement calling for a party to
            ------------
use its best efforts or reasonable efforts shall be construed so as to require
such party to incur out-of-pocket expenditures other than expenditures normally
incurred in transactions similar to the Offer or to take any step that would not
be commercially reasonable, in light of all of the circumstances.

                 [Remainder of page intentionally left blank]

                                       34
<PAGE>

EXECUTED as of the day and year first above written.

                              AROC:

                              AMERICAN RIVERS OIL COMPANY


                              By:
                                     -------------------------------------------
                              Name:  Karlton Terry
                              Title: President

                              AROC Delaware:

                              AMERICAN RIVERS OIL COMPANY


                              By:
                                     -------------------------------------------
                              Name:  Karlton Terry
                              Title: President



                              Alliance:

                              ALLIANCE RESOURCES PLC


                              By:
                                     -------------------------------------------
                              Name:  John A. Keenan
                              Title: Managing Director

                                       35

<PAGE>

                                 Exhibit 22.1

                            PRINCIPAL SUBSIDIARIES

                                                                    Place of
Subsidiary                                                          Registration
- ----------                                                          ------------

Difco Limited                                                       England

      Alliance Resources (Delaware), Inc.                           Delaware

             LaTex Resources, Inc.                                  Delaware

                   LaTex Petroleum Corporation                      Delaware

                   Germany Oil Company                              Delaware

             Alliance Resources Group, Inc.                         Delaware

                   Alliance Resources (USA), Inc.                   Delaware

                   Source Petroleum, Inc.                           Delaware



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