EARTH SCIENCES INC
10KSB, 1997-03-28
MINERAL ROYALTY TRADERS
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                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-KSB


                  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                   For the fiscal year ended December 31, 1996

                         Commission File Number: 0-6088

                              Earth Sciences, Inc.
                  --------------------------------------------
                 (Name of small business issuer in its charter)

            Colorado                                   84-0503749
     ----------------------                   -------------------------------
    (State of incorporation)                 (IRS Employer Identification No.)

                     910 12th Street, Golden, Colorado 80401
           ----------------------------------------------------------
          (Address of principal executive offices, including Zip Code)

      (Registrant's telephone number, including area code): (303) 279-7641

         Securities registered under Section 12(g) of the Exchange Act:
                        Common Stock, one cent par value
                        --------------------------------
                                 Title of class

Check  whether  the issuer  (1) has filed all  reports  required  to be filed by
Section 13 or 15(d) of the  Exchange  Act during the past 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.
 [X] Yes [ ]No

Check if there is no disclosure of delinquent  filers in response to Item 405 of
Regulation S-B contained in this form, and no disclosure  will be contained,  to
the  best  of  registrant's   knowledge,  in  definitive  proxy  or  information
statements  incorporated  by  reference  in Part III of this Form  10-KSB or any
amendment to this Form 10-KSB. [X]

State issuer's revenues for its most recent fiscal year.  $ 798,000

State the  aggregate  market  value of the voting  stock  held by  nonaffiliates
computed by reference  to the price at which the stock was sold,  or the average
bid and asked  prices of such stock,  as of a specified  date within the past 60
days. As of March 21, 1997 was $21,125,000.

Number of shares outstanding of registrant's Common Stock, one cent par value as
of March 7, 1997 - 8,577,951.

DOCUMENTS INCORPORATED BY REFERENCE
The following  documents are  incorporated  by reference  into PART I, Item 2 of
this  Form  10-KSB:  1974  through  1979,  1981,  1986  and 1988  Forms  10-K of
Registrant

Transitional Small Business Disclosure Format:  Yes       No   X
                                                    -----    -----



<PAGE>

                                     PART I

Item 1.  Description of Business
         (a) Business Development.
Earth  Sciences,  Inc.  ("ESI" or  "Registrant",  which term includes its wholly
owned  subsidiaries  unless  otherwise   indicated)  is  a  diversified  mineral
exploration  and  development   company  with  planned  production  of  purified
phosphate  products in Calgary.  ESI was incorporated under the name of Colorado
Central  Mines,  Inc. in Colorado in 1957.  During 1996,  ESI (1) continued with
activities  leading to production of purified  phosphate products at its solvent
extraction   facility  in  Calgary,   Alberta,   Canada;   (2)  settled  certain
indebtedness  with Alberta  Treasury and negotiated an option to settle the $9.4
million  deferred revenue  liability both associated with the Calgary  facility;
(3) continued  exploration  activities for gold resources in Venezuela including
its land contract covering approximately 1200 acres; (4) aquired an interest and
commenced  exploration  work on the Cerro  Gordo  gold/silver  property  in Inyo
County,  California,  and (5) maintained its position in several mining deposits
and prospects in the Western US including  its royalty  position in the San Luis
gold mine which  completed  mining in October  1997 and  produced  approximately
52,000  ounces  of gold in 1996.  Thus far in 1997,  ESI has  signed a letter of
intent to acquire a majority equity interest in ADA Environmental Solutions LLC.
These  activities are described in the  succeeding  paragraphs of this Item 1(a)
and below in Item 1(b).

ESI's solvent extraction  facility in Calgary,  Alberta,  recovered uranium from
phosphoric  acid  during  the  period  from 1983  through  1987.  Uranium  oxide
production was suspended in the fall of 1987 when the adjacent  fertilizer plant
from which the  facility  received  its feed  stock  suspended  operations.  The
contract  under  which  the  uranium  was  sold  was  modified  in 1990 to allow
unrestricted  alternative use of the facility.  An in-house  feasibility  study,
completed  in  1995,  confirmed  the  technical  and  financial  feasibility  of
conversion of the facility for the  production of purified  phosphate  products.
Revamp of the facility to allow such production is currently underway.  Start-up
activities  are expected to commence in March 1997 with  product  expected to be
available for sale in May 1997. There can be no assurances that the Company will
be able to maintain the expected schedule.

In November  1996,  ESI  reached  agreements  in  principal  with Yankee  Atomic
Electric  Company and Vermont  Yankee  Nuclear  Power  Corporation  (the "Yankee
Companies")  to  purchase a 270 day  option  for  $100,000  to  terminate  their
deferred revenue position in the Calgary facility.  As of December 31, 1996, the
consolidated   financial   statements  of  ESI  reported  Deferred  Revenues  of
$9,382,000  which  represents  prepayments by the Yankee  Companies for uranium.
Under the terms of the option, if exercised,  ESI would pay the Yankee Companies
$1,150,000  and grant them a 10 year  non-cost  bearing net  profits  royalty on
activities at the Calgary  facility.  Payments to the Yankee  Companies would be
capped at a total of $6 million,  excluding the $100,000 option payment, and ESI
could  purchase the royalty  interest for $3 million plus $50,000 per year after
the  exercise  date to a total  of not  more  than  $3,250,000.  The  definitive
document for this agreement was signed in January 1997.

In December  1996,  ESI  reached a final  settlement  with the Alberta  Treasury
("AT") concerning certain  indebtedness  related to the Calgary facility.  As of
November 30, 1996,  ESI had recorded  principal  and accrued  interest  totaling
$600,000  payable to AT. ESI obtained a complete  release from the  indebtedness
and all claims against the Calgary facility by payment to AT of $76,000.

In July 1996,  ESI  entered  into an  agreement  with  Martin  Trost  Associates
("MTA"),  a  Colorado  joint  venture  which  will  allow it to earn up to an 80
percent working interest in the Cerro Gordo property in Inyo County, California.
The property  covers 80 patented and  unpatented  mining  claims.  The agreement
provides  for ESI to arrange  financing  of up to $4.2  million to place the "H"
area into production to earn an 80% working interest in the property. Evaluation
of a 4 hole drilling  program  conducted in December is in progress to determine
further action on the property. See Item 2(f) below.

On November 15,  1996,  ESI received  notice from Battle  Mountain  Gold Comapny
("BMGC")  that they had  completed  mining at the San Luis project at the end of
October  and  that  reclamation  activities  were  continuing  with an  expected
completion date toward the end of March, 1997.

                                       1

<PAGE>


In  March  1997,  ESI  issued  $2,510,000  of  4%  convertible  debentures  (the
"Debentures")  for which ESI received net proceeds of approximately  $2,309,000.
Interest  is payable  quarterly.  The  Debentures  are  convertible  at any time
following  45  days  after  the  issuance  thereof  and  are  all  automatically
convertible on March 31, 1999. The  Debentures  are  convertible  into shares of
common stock based on a 25%  discount  from the market price of the common stock
at the time of conversion, but not in excess of $3.25 per share. ESI is required
to  register  the shares  underlying  the  Debentures,  and may  repurchase  the
Debentures at a 25% premium under certain circumstances.

On February 18, 1997, ESI signed a Letter of Intent to acquire a majority equity
position in ADA  Environmental  Solutions LLC through a combination of stock and
cash. The closing of the  acquisition,  scheduled for April 30, 1997, is subject
to a number  of  preconditions,  including  the  negotiation  and  execution  of
definitive documentation.

During 1996, through ESI's Venezuelan  company,  ESIGEO,  formed by ESI in joint
venture with GEO C.A.  ("GEO"),  ESI continued gold  exploration and development
activities in Venezuela.  ESI also owns 49% of another company,  Minera Antabari
C.A.  ("Antabari"),  which received a contract on a 1200 acre site on the Guyana
Shield in March 1992.  To date,  geologic  mapping,  geochemistry  of drainages,
soils  and  old  workings,   and  detailed  trenching  and  pitting  of  several
mineralized zones has been performed.  ESIGEO is discussing further  exploration
work at this contract area with third parties.  Three other contracts were filed
for in 1994 and refiled in 1995 with the Venezuelan Ministry of Energy and Mines
("MEM").  ESIGEO is awaiting  response  from MEM on these  filings.  ESI reached
agreement in 1996 with certain shareholders in GEO and Antabari to acquire their
holdings in exchange for 20,000 shares of stock. When the transference of shares
is completed in 1997, ESI will have a 67% ownership of GEO, and an effective 83%
ownership  of  Antabari  and  ESIGEO.  Several  other  sites with  existing  MEM
concessions  are being  evaluated,  and ESIGEO is  negotiating  with the current
concession  holders to obtain  rights to further  explore  these areas.  In 1997
ESIGEO  expects to conduct  surface  exploration on the  concessions,  currently
filed for, when they are granted, and other areas, if any, obtained from ongoing
negotiations.

         (b) Business of Issuer.
Registrant is a diversified  mineral  exploration and  development  company with
planned production of purified  phosphate  products in Calgary.  Registrant owns
the San Luis gold mine; a processing facility in Calgary,  Alberta, Canada which
recovered  uranium oxide from  phosphoric  acid and for which the  production of
purified phosphate  products is being pursued;  alunite properties which contain
alumina,  sulfur and potash; other domestic properties containing gold, vanadium
and phosphate;  and controls prospects  containing copper,  molybdenum,  silver,
lead and zinc.

Registrant  through its 49% ownership in Minera Antabari C.A.  ("Antabari")  and
its 50%  ownership in Recursos  Minerales  ESIGEO C.A.  ("ESIGEO") is exploring,
evaluating, acquiring and plans to develop gold resources in Venezuela.

                               San Luis Gold Mine
As a result of  transactions  in 1987, ESI (1) sold its working  interest in the
San Luis gold mine to BMGC, (2) acquired the underlying property and (3) through
a lease of the property to BMGC, has a 3 1/2% gross royalty on future production
from the mine. Mining and milling activities were completed by BMGC in 1996.

During 1996 approximately 52,400 ounces of gold and 28,000 ounces of silver were
produced by BMGC from the  property,  as  compared to 72,700  ounces of gold and
32,000 ounces of silver in 1995.  ESI  recognized  $692,000 in revenue from that
production in 1996, as compared to $978,000 in 1995. ESI recognized cash flow of
approximately $720,000 from its royalty interest in 1996. ESI does not expect to
recognize  any  significant  royalty  revenue  from the San Luis mine in 1997 or
thereafter.

                       Calgary Solvent Extraction Facility
In 1996, ESI continued  activities for production of purified phosphate products
at the  facility.  The  planned  schedule  to restart  the  facility in Calgary,
Alberta to  produce  purified  phosphoric  acid  (PPA) and  by-products  targets
production commencing in May 1997 assuming the planned construction and start-up
schedule can be  maintained.  Earth  Sciences  Extraction  Company  ("ESEC"),  a
wholly-owned  Canadian limited partnership of ESI, intends to produce PPA at its
solvent   extraction   facility  in  Calgary,   Alberta.   The  facility,   with
modification,  is expected  to have the  capacity to produce in excess of 80,000
tons of P2O5 per year in the form of PPA and recover other valuable constituents
available in the feedstock.

                                       2

<PAGE>


ESEC's Facility The phosphoric acid treatment  facility has been maintained on a
standby basis since its uranium recovery  operations were suspended in 1987 when
the  adjacent  fertilizer  plant,  which  had  supplied   feedstock,   suspended
operations.  Certain  contractual  restraints and lower uranium prices have made
the  stand-alone  recovery of uranium from other feedstock  sources  uneconomic.
ESEC is  modifying  the  facility to purify  superphosphoric  acid  ("SPA") to a
technical  grade PPA and  manufacture  by-products.  The SPA  feedstock is to be
purchased  from  producers in Idaho and Florida for which supply  contracts with
Agrium Inc. and Farmland Industries,  Inc. have been negotiated.  In the future,
it is anticipated  that phosphate rock from an open pit deposit owned by ESI may
be processed  under a tolling  arrangement to provide  feedstock for the Calgary
plant. (See Item 2(a) below).

Market for Purified Phosphoric Acid
Phosphorus  in the form of purified  phosphoric  acid,  H3PO4 (PPA),  is a basic
commercial  chemical  essential to a broad  variety of  industrial  and consumer
applications.  At  present  ESEC would  compete  with four  North  American  PPA
producers in the 700,000 ton P2O5  industrial  market where 200,000 tons P2O5 of
direct  consumption PPA is sold. ESEC would be the sole producer in Canada,  and
would be the only  producer in western North  America.  ESEC's  targeted  market
segments  include  those  where  growth  is 10% or  more  per  year,  where  the
predominate   users  are  in  ESEC's  freight  advantage  area,  and  the  large
Minneapolis/Chicago area market. In the first year of production ESEC expects to
capture  approximately  5% of the North  American  PPA market by matching  other
producers' quality but with lower prices. It is anticipated that cost advantages
would be realized from the use of less expensive  purification  through  solvent
extraction and lower freight costs. It is anticipated that by-products  would be
sold in local markets, which ESEC believes are large enough to absorb the volume
without being disrupted. There can be no assurances that actual sales recognized
by ESEC will equal the anticipated volumes.

Solvent Extraction Process
It is  anticipated  that the facility will produce PPA using an  environmentally
clean solvent  extraction  process employing  tributyl phosphate with a kerosene
diluent.  The basic process is well  established in the industry and believed by
ESEC to be free of patent  conflicts.  The ESEC  process has been  verified  for
anticipated  ESEC feedstocks by numerous  laboratory  bench tests and continuous
recycle  pilot  plant  runs.  The  studies  show that a  competitive  PPA can be
produced from any fertilizer  grade  phosphoric  acid feedstock with  extraction
efficiencies  of 70 to 90%. The remaining  material will be sold in local market
for its contained phosphate values. ESEC believes that no significant waste will
be generated at the ESEC facility.

Production Plan and Operating Costs
ESEC  intends to start  production  in 1997 at the rate of 10,000  tons P2O5 per
year of  technical  grade PPA,  carrying  54.4% P2O5,  or 18,400 tons of product
acid.  Associated  with the PPA  will be the  production  of 2,800  tons of P2O5
contained in other  material.  An 8% per year growth is  anticipated  in tonnage
sales.

Future Potential
The upside potential of the ESEC facility in Calgary is substantial.  Management
believes  relatively  minor changes would have to be made to increase the output
from  10,000  tons to 80,000  tons P2O5 per year.  In  addition,  the  raffinate
contains a large number of valuable elements in high  concentrations,  including
uranium,  vanadium,  yttrium,  scandium and the rare earths.  The technology for
recovery of these elements is available. The plant has a good deal of additional
equipment  including a second solvent  extraction circuit that could possibly be
utilized for that purpose.  ESEC intends to pursue these recovery  opportunities
in earnest after the commencement of PPA production.


                           Venezuelan Gold Activities
ESI's Venezuelan joint venture with GEO commenced initial exploration activities
in the fall of 1988.

In order to facilitate the  development of the Company's  various  expected land
concessions in Venezuela,  the Venezuelan corporate structure was reorganized in

                                       3

<PAGE>

1994 by  forming  a  holding  company  called  Recursos  Minerales  ESIGEO  C.A.
("ESIGEO") that is controlled  equally by ESI and its Venezuelan  partners,  GEO
C.A. ("GEO").  It is anticipated that each new land concession will be placed in
a separate entity, owned and controlled by ESIGEO. ESI reached agreement in 1996
with  certain  shareholders  in GEO and  Antabari to acquire  their  holdings in
exchange  for  20,000  shares  of  stock.  When the  transference  of  shares is
completed in 1997,  ESI will have a 67%  ownership of GEO, and an effective  83%
ownership of Antabari and ESIGEO.  The joint company will continue in the manner
in which ESI has conducted  exploration for thirty years.  That is to define and
acquire land positions in key areas that have a high probability of being within
the heart of future  mining  districts.  After  minimal  work to define  mineral
potential,  these  prospects are then sold to major mining  companies for a cash
payment and a royalty on future  production.  To facilitate this approach,  each
land  concession is to be held in a separate  company,  wholly-owned  by ESIGEO,
which can be sold without  additional  regulatory  review and delay. The goal of
ESIGEO in Venezuela is to enter into  several  such  agreements  with major gold
producers within the next several years.

The decree which empowered the Corporacion Venezolana de Guyana ("CVG") to issue
land  contracts in the Guyana  Shield has been  determined  to be illegal by the
Venezuelan courts. The Ministry of Energy and Mines ("MEM") is expected to issue
concessions  to  replace  the  over 450  existing  CVG  contracts  after a study
commissioned  to evaluate the existing  contracts'  status is complete and final
legislative  action  annuls the rights  granted CVG.  The SAMI land  contract is
included in this category and it is  anticipated  that its terms will improve as
the new concession terms will be more favorable.  The three applications for new
land  contracts  discussed  below are included with some 300 other  unacted-upon
requests  that have  accumulated  with CVG since  March  1994,  when CVG stopped
signing contracts.  New applications to MEM have been made for these three areas
and assurances have been obtained that they will receive  priority when they are
ultimately  considered.  Due to political  complexities of coordinating land use
between MEM and  designated  regions and states,  it is uncertain when these new
applications will be acted upon.

SAMI Area Contract
In 1991,  ESI and GEO formed  Antabari,  a Venezuelan  company of which ESI owns
49%. In November  1991,  Antabari filed for a contract with CVG for 488 hectares
to be explored and exploited for gold. The area,  called SAMI for San Miguel, is
located  southeast of the town of Upata,  Bolivar  state,  Venezuela in the open
country of the savannas,  and is readily  accessible from established roads. The
contract,  which was  issued  in March  1992,  provides  a two year  period  for
exploration work and to prepare a plan for  exploitation.  An extension has been
granted to complete  further  exploration  work. The contract  requires  certain
financial  guarantees with regard to exploration and  reclamation,  and requires
that the area be reduced by one-half at the end of the exploration period.

Antabari has performed  geologic mapping,  geochemistry of drainages,  soils and
old workings,  and trenching of several  mineralized  zones. One such zone has a
continuity of over 600 feet with a width of 40 feet and has yielded values of up
to 1.6 ounces per ton of gold.  Additional  sampling and analysis from extensive
pitting show a large (8 acre) anomalous gold area, clearly open to the north and
east. Drilling and further sampling will be necessary to determine the potential
of the area. ESIGEO is evaluating this next phase and/or a sale to third parties
at this time.

New Filings
In 1994,  formal  applications were made to CVG, which in 1995 have been renewed
in applications to MEM, to acquire exclusive mineral exploration rights on three
new land areas located in the Bolivar state in southeastern  Venezuela.  ESI has
been advised that ESIGEO's filings establish  priority for the areas sought. The
Company is very optimistic about the potential these areas hold for further gold
exploration  and  exploitation.  The areas were first  identified  as  potential
targets through regional geochemistry that defined anomalous occurrences of gold
and associated  minerals,  and legends of past  production by primitive  methods
which have  historically  been key to  exploration  in remote areas.  Queries of
natives and  sampling of stream  sediments  has  allowed  selection  of the best
targets from a 130 square km area that was investigated.

Apicharai
- ---------
The first concession area covering 500 hectares  (approx.  1200 acres), is known
as  Apicharai,  located  about 165 km from the town of La  Paragua.  This  small
tributary  to the  Antabari  river  has a history  of  panning  and small  scale
hydraulic  mining.  Apicharai  has an  abundance  of thick  quartz  veins in the
drainage  and gold is commonly  visible.  The  mineralization  of  Apicharai  is
typically  associated  with the quartz  veining in acidic  pyroclastics.  One 80
meter  zone on the river is panned  every  year by the  natives  after the rainy
season.  The gold particles commonly run 0.5mm and angular quartz is dominate in
the creek sediments.  As a result of the stream sediment  sampling,  an area has
been  selected for further work where the source of the gold  mineralization  is
likely to be located.

                                       4

<PAGE>


Man-cai
- -------
The second concession area, known as Man-cai, covers 500 hectares, is located in
a remote area near the Brazilian  border  accessible by boat from the La Paragua
river.  Reports are that 100 kilos of gold were taken by primitive  methods from
an area of only a few  hectares.  Sampling and  estimates of  alluvial-colluvial
material show that there is another 50-100 kilos available in a very small area.
It is believed that this gold can be easily  recovered with portable  equipment.
The source rock may hold significant  potential and will be targeted early on in
the further exploration program. Considerable pyrite exists in the volcanic host
rock and upstream, out of the rhyolite, gold is at background levels, helping to
define the source  material.  The  existence  of easily  obtainable  gold in the
surface  material  and the boundary  definition  of the source rock make this an
excellent target for significant gold mineralization.

Manaima
- -------
The third  concession  area,  known as Manaima,  also covers 500 hectares and is
located  50 Km from the town of La  Paragua.  This is an area rich in history of
small  primitive  mining  operations.  The  hydrothermal  mineralization  on the
property  is  associated  with a fault zone where gold is  typically  found with
copper and manganese.

Specific work programs are being formalized for initial detailed  exploration of
the above mentioned  areas. The plans provide for the building of an airstrip to
facilitate access and  transportation  of equipment into Apicharai,  Man-cai and
other prospects. Access is now being accomplished via river routes.

The primary objectives of the 1997 plans are to determine as quickly as possible
the  nature  and  extent  of gold  mineralization  on the  anticipated  new land
concessions  and to  continue to define  those  additional  areas  where  future
filings will be made.  Activities  will include surface  geochemistry,  geologic
mapping and trenching.

                           ADA Environmental Solutions
On February 18, 1997, ESI signed a Letter of Intent to acquire a majority equity
position in ADA  Environmental  Solutions LLC ("ADA")  through a combination  of
stock and cash. The acquisition was prompted by synergism  involving products to
be produced by the solvent extraction  facility in Calgary.  These products will
be  utilized  by  ADA  in  a  new  proprietary  technology  designed  to  reduce
particulate  emissions from plants burning  low-sulfur coal. It is expected that
the 1990 Clean Air Act Amendments  will result in 600 to 800 coal-fired  boilers
switching  to  low-sulfur  coal by the year 2000.  ADA  anticipates  capturing a
significant  portion of this  market  with its  proprietary  non-toxic  chemical
conditioner  which  offers  both  technical  and  economic  advantages  over the
hazardous  chemicals  currently  being  used.  The  closing of the  acquisition,
scheduled for April 30, 1997, is subject to a number of preconditions, including
the negotiation and execution of definitive documentation.

The Letter of Intent  provided for (i) an immediate cash payment of $400,000 for
a 4.8% equity interest,  (ii) a combination of $500,000 in cash and $1.6 million
in  notes  to be paid  at the  scheduled  closing,  for  the  acquisition  of an
additional  46.2%  interest in ADA, and (iii) an option to acquire the remaining
equity  interests  (49%) in ADA during the six months  following May 1, 1998 for
issuance  of stock  valued at  approximately  $5.8  million.  In  addition,  the
principals of ADA will have an option to require ESI to sell its 51% interest in
ADA for the price paid by ESI plus  interest in the event ESI does not  exercise
its option.

                  Mineral Properties and Other Business Matters
During 1996 Registrant  maintained its ownership position in the several mineral
interests it holds.  The mineral  interests  maintained  by  Registrant  include
significant resource interests in alumina,  gold,  vanadium,  potash and sulfur,
and  prospects  for  copper/molybdenum  and  silver  (see  Item  2  below).  Raw
materials,  as the term is generally  used,  are not  essential to  Registrant's
mineral  acquisition and development  activities  performed for its own account.
However,  Registrant's  commercialization  of its  properties is dependent  upon
securing adequate supplies of energy and water. The planned production of PPA at
the Calgary facility will require adequate  supplies of SPA feedstock.  Adequate
supplies of this material are currently available in the required quantities and
at reasonable  prices.  There can be no assurance  that such  availability  will
continue in the future.

                                       5

<PAGE>


Registrant  holds no patents,  licenses,  franchises or land  contract  which it
considers material in light of its other assets.  However,  Registrant holds for
itself, and in association with others,  Federal Potassium  Prospecting Permits,
State Potash and Alunite Leases,  Federal Potassium  Preference Right Leases and
Applications,  Federal Phosphate Prospecting Permits,  Federal Phosphate Leases,
State  Phosphate  Leases,  fee mineral rights and other  exploration and mineral
interests  which  are the  basis for  Registrant  to  explore  and  develop  the
properties  subject thereto.  In certain  instances such mineral  interests give
preferential leasing rights to Registrant upon location and demonstration to the
US  Geological  Survey  Conservation  Division  that the deposit is a "valuable,
workable deposit in commercial quantities".

Registrant also holds certain of its mineral properties by means of "unpatented"
lode and  placer  mining  claim  locations.  Unpatented  mining  claims  require
compliance  with  certain  Federal and State laws in order to  maintain  mineral
interests thereon. Legislation enacted in October 1992 requires a $100 per claim
rental charge on all unpatented mining claims.

Numerous and in some regards  conflicting bills have been introduced and are now
pending  in  the US  Congress  which  would  supplant  or  radically  alter  the
provisions of the US Mining Law of 1872, under which npatented mining claims are
located. If enacted,  such legislation could substantially  increase the cost of
holding  unpatented  mining  claims and could impair the ability of companies to
develop mineral resources on unpatented mining claims.  Under the terms of these
bills,  the ability of companies to obtain  patents on unpatented  mining claims
would be nullified or substantially  impaired,  and most contain  provisions for
the payment of royalties to the federal government in respect of production from
unpatented  mining  claims,  which  could  adversely  affect the  potential  for
unpatented mining claims.  Registrant's financial performance could therefore be
affected  adversely by passage of such  legislation.  Pending possible reform of
the Mining Law of 1872,  Congress has put in place a moratorium  which prohibits
acceptance or processing of most mineral patent applications. It is not possible
to predict  whether  any change in the  Mining  Law of 1872  will,  in fact,  be
enacted or, if enacted, the form the changes may take.

The  activities  of  Registrant  performed for its own account are not seasonal,
although winter weather may limit certain activities.

Registrant's  mineral  exploration and property  acquisition  activities are not
dependent   upon  one  or  a  few   major   customers.   The   search   for  and
commercialization  of economic  mineral  deposits is highly  competitive.  Large
companies  having greater  financial  resources  than  Registrant and many small
mining  companies are active in acquiring,  evaluating  and  developing  mineral
resource prospects in the western United States and Venezuela.

Registrant spent approximately $109,000 and $183,000 on research and development
activities  related to the  Calgary  extraction  facility  during 1996 and 1995,
respectively.

Registrant is subject to regulation by various local, state and Federal agencies
with regard to the environmental effects of its business. Although environmental
regulatory  costs to date and those expected in 1997 are not  significant,  they
may become  substantial  in the future.  Such costs are considered a part of the
ordinary costs of Registrant's business.

As of December 31, 1996 Registrant employed 5 personnel at its Golden, Colorado,
offices and 14 fulltime at the Calgary  facility.  In addition,  other personnel
were employed on a contract basis for specific project tasks.


Item 2.  Description of Property. 1
Registrant  owns,  controls  and  participates  with others in mineral  property
interests  and  mineral  property   exploration  and  development   programs  in
California, Colorado, Idaho, Montana, Nevada, Utah, and Venezuela. The following
property  descriptions  contain  deposit  references  according to the indicated
definitions,  although it has not been proven that any of these deposits, except
the San Luis gold mine, are commercially viable. In-house studies for several of
the undeveloped  properties  indicate  technical and economic  feasibility.  The
following is summary information regarding Registrant's principal properties.








                                       6

<PAGE>

(a)  Vanadium/Phosphate Property near Paris and Bloomington,  Idaho
See Item 3(f),  1975-1977  Forms  10-K for the  property  acquisition,  property
rights,  property  description and  exploration  program prior to 1979. See Item
1(c) 1981 Form 10-K concerning  Registrant's sale and option of its interests on
the properties in January,  1981.  Registrant reacquired all of the interests in
the properties from the Conda Partnership in 1992.

To date,  drill  testing on the southern  portion of the deposit show tonnage of
approximately 34 million tons of phosphate rock classified as Measured Reserves,
with an  additional  19 million tons of phosphate  rock  classified as Indicated
Reserves.  The grade of the upper bed material of the block is  calculated to be
25% P2O5  over a  thickness  of 9 feet and the  grade of the  lower  (main)  bed
material is calculated to be 30% P2O5 over a 6 foot thickness.

Metallurgical  test work on the  vanadium  bed has  resulted  in a patent  being
issued to Registrant regarding the extraction techniques which were developed as
a result of such work. Economic feasibility calculations show that production of
vanadium from the property is commercially feasible. Registrant is investigating
plans for  development  of the property,  however there can be no assurance that
marketing  and  financing  arrangements  can be  obtained.  In 1993,  Registrant
negotiated  an  arrangement  with a third  party  to  allow a  minor  amount  of
phosphate  ore  to be  removed  from  the  outcrop  on a  portion  of one of its
properties  held in fee interest.  That party  obtained  permits in 1994 to mine
3,000 tons from the property but no mining has yet taken place. This deposit may
provide a source for the intended  purified  phosphoric  acid  production at the
Calgary facility (See Item 1(a) above).

(b) San Luis Gold Mine.
See Item 3(h) 1975 Form 10-K for a description of the property.
See Item 1(c)(1) 1988 Form 10-K and above concerning  Registrant's sale to BMGC,
other related  transactions in 1987 and BMGC development  work.  Registrant owns
the 800 acre site on which the mine is located, has leased the property to BMGC,
and  received a 3 1/2% gross  royalty  from all  production.  Mining and milling
activities  were  completed by BMGC in 1996 and  Registrant  does not expect any
significant  revenue in 1997 or thereafter.  BMGC commenced mining operations in
early 1991.

Production during the period from 1991 through 1996 was as follows:

         Year                     Ounces of Gold            Ounces of Silver
         1991                       31,500                       21,600
         1992                       55,600                       21,000
         1993                       72,800                       27,000
         1994                       72,700                       19,400
         1995                       72,700                       31,800
         1996                       52,400                       28,000
(c)  Alunite Resources. 2

- ----------------------------------------
 1 For  purposes  of this Item,  the term  "Measured  Reserves"  and  "Indicated
Reserves" shall have the meaning as adopted by the US Geological  Survey and the
US Bureau of Mines, as follows: Measured Reserves are reserves for which tonnage
is computed from dimensions revealed in outcrops,  trenches,  workings and drill
holes,  and for which the grade is computed  from results of detailed  sampling.
The sites for inspection,  sampling and  measurement are so closely spaced,  and
the geologic  character is defined so well,  that the size,  shape,  and mineral
content are well  established.  The computed  tonnage and grade are judged to be
accurate  within limits which are stated,  and no such limit is judged to differ
from the  computed  tonnage or grade by more than 20%.  Indicated  Reserves  are
reserves  from which the tonnage  and grade are  computed  partly from  specific
measurements,  samples,  or production data, and partly from projections,  for a
reasonable distance,  on geologic evidence.  The sites available for inspection,
measurement,  and sampling are too widely or otherwise inappropriately spaced to
outline the reserve completely or to establish its grade throughout.

2 Acquisition of Federal alunite mineral rights is accomplished  through Federal
Potassium  Preference  Right Leases issued under Section 4 of the Leasing Act of
February 7, 1927.

                                       7

<PAGE>

Alunite is a source of alumina (the raw material of aluminum), potassium sulfate
fertilizer, sulfuric acid and sulfur.

           (1) "LC" Alunite Property.
See Item  3(b)(1),  1974 and 1975 Forms 10-K and Item 3(h),  1976 and 1977 Forms
10-K for property  description,  property rights and  exploration  work in prior
years.  Results of exploration work to date show a total of 61.1 million tons of
material classified as Measured or Indicated Reserves. The grade of the material
is  calculated  to average  approximately  39.6%  alunite  (approximately  14.7%
alumina).

In 1978,  Registrant  applied for a Preference  Right Lease for potassium on the
property (a "PRLA"),  in 1979  submitted the "initial  showing"  required in the
lease  application and in 1982 submitted the operating plan for an environmental
impact  assessment.  Approval of the project was recommended by a Bureau of Land
Management advisory panel. However, in 1985 a Congressional resolution suspended
all  Preference  Right Lease activity in Wilderness  Study Areas.  Until further
Congressional  action is taken,  progress on the project will be restricted.  In
1991, Registrant received notice from the Department of Interior that the Bureau
of Land Management  considers the PRLA as a valid existing right with respect to
any future  wilderness  designation.  Registrant  relinquished its 48 unpatented
mining claims covering the alunite property in 1993.

          (2)"NG" Property and Other Utah Alunite Interests.
See Item 3(a)(1),  (2), (3), (4) and (5),  1974-1979  Forms 10-K for NG Property
and other Utah alunite  interest  descriptions,  property rights and exploration
programs  prior to 1978.  ESI was  granted  Preference  Right  leases on the ten
principal  tracts that  comprise the NG deposit on January 13, 1983.  The leases
were  assigned to the Alumet  Partnership  effective  February  1, 1983.  Alumet
assigned its Utah  alunite  interests  back to ESI in  December,  1986 (See item
1(c)(1) 1986 Form 10-K). ESI relinquished a portion of the leases,  reducing the
acreage under lease to 680 acres. All required lease payments were made in 1996.

Results of exploration and drilling  programs on the properties to date show 129
million  tons  of  material  classified  as  Measured  Reserves,  with  a  grade
calculated to be 37.9% alunite (approximately 14.03% alumina) with an additional
287 million tons classified as Indicated Reserves with average grades calculated
to range from 33.5% to 39.4% alunite (approximately 12.4% to 14.6% alumina).

(d) Calgary Solvent Extraction Facility.
Registrant owns a hydrometallurgical  solvent extraction facility which was used
to extract uranium from  phosphoric acid from June 1983 through  September 1987,
when the adjacent  phosphoric  acid  fertilizer  plant supplying feed stock shut
down. (See Item 1(a) and 1(b) above). The facility occupies a 20,000 square foot
building and is located in southeast  Calgary,  Alberta on a 12 acre site leased
from the adjacent fertilizer plant.

(e)  Emigrant Property.
In 1987 Registrant  acquired fee ownership of two patented lode mining claims in
the Emigrant Peak area, Park County, Montana containing  approximately 38 acres.
Registrant  also owns two other patented  placer claims  containing 37 acres and
holds 13  unpatented  mining  claims in the same area.  This block of contiguous
mining  claims  contains  copper,  molybdenum,   gold,  silver,  lead  and  zinc
mineralization  which has not yet been fully delineated.  All necessary payments
were made to hold the unpatented claims in 1996.

During 1992, a third party conducted limited  geochemical  sampling,  geological
mapping and a remote sensing study using Landsat  Thematic Mapper data and image
enhancements.  One core hole was subsequently drilled to a depth of 588 feet. In
1993, an additional four reverse  circulation holes were drilled on the property
totaling 950 feet.  Analysis of samples  from the drilling  helped to define the
southwest boundaries of a breccia pipe containing gold, silver, copper, zinc and
lead  mineralization.  Based on the drilling performed a deposit of from 750,000
to 1.5 million tons of material  classified as Measured and  Indicated  Reserves
can be delineated with current metal values of over $15 per ton.

(f)  Cerro Gordo Property.
In July 1996,  Registrant entered into an agreement with Martin Trost Associates
("MTA"),  a  Colorado  joint  venture  which  will  allow it to earn up to an 80
percent working interest in the Cerro Gordo property in Inyo County, California.

                                       8

<PAGE>


The agreement provides for Registrant to arrange financing of up to $4.2 million
to place the "H" area into  production  to earn an 80%  working  interest in the
property.  MTA acquired a mineral  lease in August 1995 on 75  unpatented  and 5
patented  claims.  Terms of the lease are a 5% net  smelter  royalty  and annual
payments  averaging  $36,000 per year. Two patented  claims lie within the claim
block and are currently held by third parties.

The Cerro Gordo  property lies in the Inyo Mountains east of Owens Lake and west
of Death  Valley at an  elevation of  approximately  7800 feet.  Access is by an
existing, county maintained, gravel road. Temperatures are moderate with limited
snowfall   during  the  months  of  January  and   February.   The  property  is
approximately  equidistant  from  Reno and Las  Vegas,  Nevada  and Los  Angles,
California.

Based on 36,000 feet of past drilling and old underground workings,  gold/silver
mineralization  has been demonstrated along a NW-SE mineralized trend stretching
8,000 feet long and 5,600 feet wide. The  mineralized  area appears zoned with a
lead/zinc/silver/tungsten  core  trending  outward to the west to a  gold/silver
zone. The large areal extent of the gold/silver  mineralization  may lend itself
to the  discovery of a  significant  gold mine.  Evaluation of a 4 hole drilling
program  conducted in December is in progress to determine further action on the
property.

Item 3.  Legal Proceedings.
In June 1993, a lawsuit was filed in the United  States  District  Court for the
Northern  District of California  against ESI Chemical,  Inc.  (ESIC), a dormant
subsidiary  of  Registrant,  by Volvo  GM Heavy  Truck  Corporation.  The  claim
concerns contamination at a property in Oakland,  California previously owned by
a predecessor of ESIC. HM Holdings,  Inc. is also a defendant in the action. The
complaint  seeks  recovery  of  response  costs,  damages,  and  injunctive  and
regulatory  relief. A court ordered mediation took place in January,  1997 which
led to a  settlement  in  principle  involving  all the  parties.  Drafts of the
settlement  agreements  are in  process  of  being  prepared,  and if the  final
settlement is executed with the terms and conditions  contained in the agreement
in principle, it will not have a material effect on the Registrant.

See also note 8 to the consolidated  financial  statements submitted in response
to Item 7 below concerning legal proceedings of Registrant.

Item 4.  Submission of Matters to a Vote of Security Holders.
None.


                                     PART II
Item 5.  Market for Common Equity and Related Stockholder Matters.
(a)  Market Information.
Registrant's common  stock  trades on The NASDAQ  Small-Cap
             Market  under the symbol  ESCI.
                   Price  Ranges (closing high and low bids)
                                     1996                      1995
1st Quarter                   $ 1.63   -  2.56            $ 1.06  -  1.69
2nd Quarter                     1.63   -  4.31              1.00  -  1.38
3rd Quarter                     1.50   -  3.75              1.00  -  2.25
4th Quarter                     1.75   -  3.88              1.25  -  2.63

The  price  ranges  shown  are based on NASDAQ  quotations  as  reported  by the
National  Association  of  Securities  Dealers,   Inc.  The  quotations  reflect
inter-dealer prices, without retail mark-up, mark-down or commission and may not
represent actual transactions.

(b) Holders.
The number of record  holders of common stock,  one cent par value of Registrant
as of March 15, 1997 was  approximately  1,870,  which number  excludes  "street
name" holders.

(c) Dividends.
Registrant has not paid dividends since its inception and there are no plans for
paying dividends in the foreseeable future.

                                       9

<PAGE>


Item 6.  Management's Discussion and Analysis of Financial Condition and Results
         of Operations.
This Annual Report may contain forward-looking  statements within the meaning of
Section 27A of the Securities Act of 1933. Such  forward-looking  statements may
be found in this section under and under "Description of Business," "Management'
Discussion  and  Analysis of Financial  of  Financial  Condition  and Results of
Operations."  Actual  events or  results  could  differ  materially  from  those
discussed in the forward-looking statements as a result of various factors.

                         Liquidity and Capital Resources
Management  believes that existing working capital and recent private placements
of stock and convertible  debentures are sufficient to fund revamp  construction
and start up activities at Calgary and planned operations until positive casflow
is achieved in Calgary,  which is  anticipated  in the 4th quarter of 1997.  The
achievement  of such  positive  cash  flow is  dependent  upon  several  factors
including  commercialization of the purification  process,  success in marketing
product and competition, any of which could delay or frustrate such achievement.
Additional funds may be required to meet the further obligations associated with
the ADA acquisition,  exercise of the Yankee Option, further exploration work on
the Cerro Gordo property,  and any expanded exploration  activities in Venezuela
(see  Item  1(b)  above).  Private  placements  of  common  stock,   convertible
debentures  and bank  borrowings  may be  evaluated  to fund such  requirements.
Registrant  received a net of $1,954,000 from Regulation S offerings and private
placements of its common stock in 1996 and a net of $2,309,000 from the issuance
of convertible debentures in the first quarter of 1997 (see Item 1(a) above).

Based on current  estimates,  the Calgary  facility  will require an  additional
approximately  Can. $3 million to finalize revamp  construction and re-start the
plant for the  production  of purified  phosphate  products,  planned for Spring
1997.  Registrant  expects to finance those  requirements  from existing working
capital and the convertible debentures sold in March 1997.

Registrant  is  funding  the  majority  of cash  costs  of the  Venezuelan  gold
exploration activities. Activities planned on the existing contract and on those
concessions  expected to be  acquired in the future can be met through  existing
working capital.  Registrant plans to raise the additional  capital, if and when
needed,  through further  private  placements of stock,  convertible  debentures
and/or joint venture arrangements, if appropriate.

Cash flow provided by (used in)  operations  totaled  $(233,000) for 1996 versus
$336,000 for 1995. Cash flow from investing activities for 1996 included funding
and collections on notes receivable of $70,000, capital expenditures of $736,000
and the net purchase of marketable securities $660,000. Cash flow from financing
activities in 1996  consisted of payments on notes payable and long-term debt of
$9,000,  proceeds  from the issuance of stock of  $1,055,000  and proceeds  from
convertible debentures of $899,000.

Results of Operations
In 1991,  royalty  income  from the San Luis  gold  mine  commenced.  Registrant
recognized $692,000 and $978,000 in revenue from the production and sale of gold
and silver from the property in 1996 and 1995, respectively. Production from the
mine ended in November 1996.

Operating  expenses  increased  significantly  in 1996 as staff  and  activities
related to the Calgary facility expanded,  whereas research and development work
related to the Calgary  facility  decreased from $183,000 in 1995 to $109,000 in
1996. General and  administrative  expenses rose significantly in 1996 also as a
result of adding staff in Calgary for construction  and start-up  activities and
an aggressive investor relations program that commenced in 1996.

Registrant's  interest expense totaled  approximately  $82,000 for both 1996 and
1995.  Interest  expense includes  approximately  $40,000 in 1996 and $45,000 in
1995 from the  consolidation of the Canadian  subsidiary's  results.  Based on a
recently  adopted new position of the SEC staff,  Registrant  may be required to
recognize as much as $837,000 in interest expense in the 1st and 2nd quarters of
1997 as a result of the convertible debentures issued in March 1997.

Extraordinary  gain from debt  extinquishment  recognized in 1996 represents the
difference  between the  recorded  liabilities  at the time of  settlement  with
Alberta  Treasury  of  approximately  $600,000  and the  settlement  payment  of
$76,000, net of income taxes of $159,000.

                                       10

<PAGE>


Item 7.  Financial Statements.
Index to Financial Statements
Independent Auditor's Report
Financial Statements:
         Earth Sciences, Inc. and Subsidiaries
           Consolidated Balance Sheet, December 31, 1996
           Consolidated  Statements of Operations,
             For the Years Ended December  31, 1996 an 1995
           Consolidated  Statement of Stockholders' Equity,
             For the Period  from  January 1, 1995 to December  31, 1996
           Consolidated Statements of Cash Flows,
             For the Years Ended  December 31, 1996 and 1995 
           Notes to Consolidated Financial Statements

Item 8.  Changes In and Disagreements With Accountants on Accounting and
         Financial Disclosure.
None.







                   (Balance of this page intentionally blank)

                                       11

<PAGE>



                      Earth Sciences, Inc. and Subsidiaries

                        Consolidated Financial Statements
                           December 31, 1996 and 1995





<PAGE>

                          INDEX TO FINANCIAL STATEMENTS




                                                                        PAGE
                                                                        ----

Independent Auditor's Report........................................... F-2

Consolidated Balance Sheet - December 31, 1996......................... F-3

Consolidated Statements of Operations -
  For the Years Ended December 31, 1996 and 1995....................... F-4

Consolidated Statements of Changes in Stockholders' Equity -
  For the Years Ended December 31, 1996 and 1995....................... F-5

Consolidated Statements of Cash Flows - For the
  Years Ended December 31, 1996 and 1995............................... F-6

Notes to Consolidated Financial Statements............................. F-7




                                       F-1

<PAGE>

                          INDEPENDENT AUDITOR'S REPORT




To the Board of Directors and Stockholders
Earth Sciences, Inc. and subsidiaries
Golden, Colorado



We have audited the accompanying  consolidated  balance sheet of Earth Sciences,
Inc. and  subsidiaries  as of December 31,  1996,  and the related  consolidated
statements of operations, changes in stockholders' equity and cash flows for the
years ended December 31, 1996 and 1995. 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.  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 financial position of Earth Sciences, Inc.
and  subsidiaries  as of December 31, 1996, and the results of their  operations
and  their  cash  flows for the  years  ended  December  31,  1996 and 1995,  in
conformity with generally accepted accounting principles.




HEIN + ASSOCIATES LLP

Denver, Colorado
February 3, 1997

                                      F-2

<PAGE>



                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                           CONSOLIDATED BALANCE SHEET
                                DECEMBER 31, 1996

                                     ASSETS
                                     ------

CURRENT ASSETS:
    Cash and cash equivalents                                      $    586,000
    Marketable securities                                             1,135,000
    Receivables                                                         101,000
    Prepaid expenses and other                                          217,000
                                                                   ------------
             Total current assets                                     2,039,000


PROPERTY, PLANT AND EQUIPMENT, at cost                               17,198,000
    Less accumulated depreciation and amortization                   (5,043,000)
                                                                   ------------
             Net property, plant and equipment                       12,155,000
                                                                   ------------

OTHER ASSETS                                                            207,000
                                                                   ------------
TOTAL ASSETS                                                       $ 14,401,000
                                                                   ============

                      LIABILITIES AND STOCKHOLDERS' EQUITY
                      ------------------------------------

CURRENT LIABILITIES:
    Accounts payable                                               $    151,000
    Note payable - related party                                         58,000
    Other current liabilities                                            69,000
                                                                   ------------
             Total current liabilities                                  278,000

LONG-TERM LIABILITIES:

    Deferred revenues                                                 9,382,000
    Long-term debt from related parties                                 167,000
    Accrued decommissioning liability                                   220,000
    Other liabilities                                                   174,000
                                                                    -----------
                                                                      9,943,000

COMMITMENTS AND CONTINGENCIES (Notes 2, 3, 7, and 8)                       --

STOCKHOLDERS' EQUITY:
    Common stock, $.01 par value; 25,000,000
         shares authorized;
         8,449,000 shares issued                                         84,000
    Additional paid-in capital                                        8,645,000
    Accumulated deficit                                              (2,721,000)
    Cumulative translation adjustments                               (1,828,000)
                                                                   ------------
                 Total stockholders' equity                           4,180,000
                                                                   ------------

    TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY                     $ 14,401,000
                                                                   ============



       See accompanying notes to these consolidated financial statements. 

                                       F-3

<PAGE>
<TABLE>
<CAPTION>
                           EARTH SCIENCES, INC. AND SUBSIDIARIES

                           CONSOLIDATED STATEMENTS OF OPERATIONS


                                                                      FOR THE YEARS ENDED
                                                                         DECEMBER 31,
                                                               ------------------------------
                                                                   1996               1995
                                                               -----------        -----------
<S>                                                            <C>                 <C>  
REVENUES:
    Royalty income                                             $   692,000        $   978,000
    Rental income                                                   19,000             18,000
    Other income                                                    87,000             47,000
                                                               -----------        -----------
             Total revenues                                        798,000          1,043,000

EXPENSES:
    Operating                                                      505,000            146,000
    General and administrative                                     380,000            260,000
    Research and development                                       109,000            183,000
    Depletion, depreciation and amortization                       260,000            234,000
    Interest                                                        82,000             82,000
                                                               -----------        -----------
             Total expenses                                      1,336,000            905,000
                                                               -----------        -----------

INCOME (LOSS) BEFORE EXTRAORDINARY ITEMS AND TAXES                (538,000)           138,000

INCOME TAX BENEFIT                                                 159,000               --
                                                               -----------        -----------

INCOME (LOSS) BEFORE EXTRAORDINARY GAIN                           (379,000)           138,000
                                                               -----------        -----------

EXTRAORDINARY GAIN FROM DEBT EXTINGUISHMENT, 
    (net of income tax of  $159,000)                           $   371,000               --
                                                               -----------        -----------

NET INCOME (LOSS)                                              $    (8,000)       $   138,000
                                                               ===========        ===========
NET INCOME (LOSS) PER COMMON SHARE:
    Before extraordinary item                                  $      (.05)       $       .02
    Extraordinary Gain                                                 .05               --
                                                               -----------        -----------
             Net Income (Loss) Per Common Share                $      --          $       .02
                                                               ===========        -----------

WEIGHTED AVERAGE COMMON SHARES OUTSTANDING                       7,186,000          6,382,000
                                                               ===========         ==========





              See accompanying notes to these consolidated financial statements.

                                               F-4
</TABLE>

<PAGE>
<TABLE>
<CAPTION>

                                        EARTH SCIENCES, INC. AND SUBSIDIARIES

                             CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
                                    FOR THE YEARS ENDED DECEMBER 31, 1996 AND 1995


                                                                                                 
                                                              COMMON STOCK           Additional                   Cumulative
                                                        -------------------------     Paid-in     Accumulated     Translation
                                                           Shares        Amount       Capital       Deficit       Adjustments
                                                           ------        ------       -------       -------       -----------

<S>                                                      <C>         <C>           <C>           <C>            <C>         
BALANCES, January 1, 1994                                 6,354,000   $    64,000   $ 6,390,000   $(2,851,000)   $(2,056,000)

    Net income                                                 --            --            --         138,000           --
    Foreign currency translation                               --            --
      adjustment                                               --            --            --            --          261,000
                                                        -----------   -----------   -----------   -----------    -----------

    BALANCES, December 31, 1995                           6,354,000        64,000     6,390,000    (2,713,000)    (1,795,000)

    Debt converted to common stock                          883,000         8,000       891,000          --             --
    Related party debt converted to common
           stock                                            210,000         2,000       111,000          --             --
    Stock issued for cash, net of related costs             899,000         9,000     1,046,000          --             --
    Stock issued for services                               100,000         1,000       135,000          --             --
    Stock options issued for services                          --            --          64,000          --             --
    Stock issued to employees for bonuses                     3,000          --           8,000          --             --
    Net loss                                                   --            --            --          (8,000)          --
    Foreign Currency translation adjustment                    --            --            --            --          (33,000)
                                                        -----------   -----------   -----------   -----------    -----------

    BALANCES, December 31, 1996                           8,449,000   $    84,000   $ 8,645,000   $(2,721,000)    $(1,828,000)
                                                        ===========   ===========   ===========   ===========    ===========







                                See accompanying notes to these consolidated financial statements. 

                                                             F-5
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                          EARTH SCIENCES, INC. AND SUBSIDIARIES

                                          CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                                                           FOR THE YEARS ENDED
                                                                                               DECEMBER 31,
                                                                                   ----------------------------------
                                                                                       1996                  1995
                                                                                   ------------           -----------
<S>                                                                                <C>                     <C> 
CASH FLOWS FROM OPERATING ACTIVITIES:
    Net income (loss)                                                              $    (8,000)           $   138,000
    Adjustments to reconcile net income (loss) to net cash provided by (used in)
         operating activities:
             Depletion, depreciation and amortization                                  260,000                234,000
             Gain on settlement of debt, net of income taxes                          (371,000)                  --
             Income tax benefit                                                       (159,000)
             Expenses paid with stock                                                  208,000                   --
             Changes in operating assets and liabilities:
                 (Increase) decrease in:
                      Receivables                                                      116,000                (85,000)
                      Other assets                                                    (387,000)               (13,000)
                 Increase (decrease) in:
                      Accounts payable                                                 145,000                  6,000
                      Other liabilities                                                (37,000)                56,000
                                                                                   -----------            -----------
         Net cash provided by (used in) operating activities                          (233,000)               336,000

CASH FLOWS FROM INVESTING ACTIVITIES:
    Collections on notes receivable                                                     70,000                130,000
    Notes receivable funded                                                            (70,000)              (130,000)
    Capital expenditures                                                              (736,000)               (25,000)
    Purchase of marketable securities                                               (3,084,000)              (190,000)
    Sale of marketable securities                                                    2,424,000                   --
                                                                                   -----------            -----------
         Net cash used in investing activities                                      (1,396,000)              (215,000)

CASH FLOWS FROM FINANCING ACTIVITIES:
    Payments on notes payable and long-term debt                                        (9,000)              (181,000)
    Proceeds from issuance of common stock                                           1,055,000                   --
    Proceeds from convertible debentures                                               899,000                   --
                                                                                   -----------            -----------
         Net cash provided by (used in) financing activities                         1,945,000               (181,000)

EFFECT OF EXCHANGE RATE CHANGES ON CASH                                                  8,000                 (1,000)
                                                                                   -----------            -----------

INCREASE (DECREASE) IN CASH                                                            324,000                (61,000)

CASH AND CASH EQUIVALENTS, beginning of year                                           262,000                323,000
                                                                                   -----------            -----------

CASH AND CASH EQUIVALENTS, end of year                                             $   586,000            $   262,000
                                                                                   ===========            ===========
SUPPLEMENTAL SCHEDULE OF CASH FLOW INFORMATION:

    Cash payments for interest                                                     $    40,000            $    37,000
                                                                                   ===========            ===========

    Conversion of notes payable                                                    $ 1,012,000            $         -
                                                                                   ===========            ===========
    Stock and options issued for investor relations                                $   200,000            $         -
                                                                                   ===========            ===========

    Purchase of property and equipment for debt                                    $   125,000            $         -
                                                                                   ===========            ===========
    Stock issued for payment of employee bonuses                                   $     8,000            $         -
                                                                                   ===========            ===========







                           See accompanying notes to these consolidated financial statements 

                                                          F-6
</TABLE>

<PAGE>


                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



1. SUMMARY OF NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES:
   --------------------------------------------------------------------

     Nature of Operations - The accompanying  consolidated  financial statements
     include the accounts of Earth  Sciences,  Inc.  (ESI) and its  wholly-owned
     subsidiaries,  ESI Chemicals, Inc. (ESIC) and ESI Resources Limited (ESIR).
     ESIC has been a dormant  subsidiary  since  1983.  ESIR's only asset is its
     investment  in  its  wholly-owned  subsidiary,  Earth  Sciences  Extraction
     Company  (ESEC).  All  significant  intercompany   transactions  have  been
     eliminated. Collectively, these entities are referred to as the Company.

     The  Company  is  principally  engaged in  natural  resources  exploration,
     research and  development  and planned  production in the second quarter of
     1997 of purified phosphate products in Calgary, Alberta.

     Cash Equivalents - For purposes of the statement of cash flows, the Company
     considers all highly liquid debt  instruments  with original  maturities of
     three months or less to be cash  equivalents.  At December  31, 1996,  cash
     equivalents  consisted  of  money  market  instruments  in  the  amount  of
     $520,000, which are not FDIC insured.

     Marketable  Securities - Marketable securities consist of government backed
     debt  securities,  corporate stock and bonds and  certificates of deposits,
     which mature  within one year or less.  The  securities  are  classified as
     trading securities, as defined in Financial Accounting Standards (FAS) 115,
     and are stated at market, which approximates cost at December 31, 1996.

     Property,  Plant and Equipment - Property, plant and equipment is stated at
     cost and  includes  a  solvent  extraction  facility.  Depreciation  on the
     facility  and its  equipment,  while it was in  production,  was  generally
     provided using the units of production method based on estimated production
     over the  life of the  contract.  Depreciation  on the  solvent  extraction
     facility  while not in operation is being computed at 1% per year (see Note
     2). Depreciation on other assets is provided using the straight-line method
     based on estimated  useful lives  ranging from 3 to 20 years.  Depletion of
     producing  mineral  properties  is  computed  using the unit of  production
     method  based on proved  reserves.  Maintenance  and repairs are charged to
     operations as incurred.  When assets are retired, or otherwise disposed of,
     the property  accounts are relieved of costs and  accumulated  depreciation
     and any resulting gain or loss is credited or charged to income.

     Deferred  Exploration and Development Costs - Land and mineral  properties,
     including related deferred  exploration and development  costs, are carried
     at cost.

     The Company follows the policy of capitalizing all direct costs,  including
     labor,  related to the  exploration  and  development of properties held or
     controlled  by the Company,  which,  in the opinion of  management,  have a
     continuing value.

     Impairment of Long-Lived  Assets - In fiscal 1996, the Company  adopted FAS
     121  "Impairment  of Long-  Lived  Assets."  In the  event  that  facts and
     circumstances  indicate  that the cost of  assets  or other  assets  may be
     impaired,  an  evaluation  of  recoverability  would  be  performed.  If an
     evaluation  is  required,  the  estimated  future  undiscounted  cash flows
     associated with the asset would be compared to the asset's carrying amount

                                       F-7

<PAGE>
                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

     to determine if a write-down to market value or discounted  cash flow value
     is  required.  Adoption of FAS 121 had no effect on the  December  31, 1996
     financial statements.

     Deferred  Revenues  -  Deferred  revenues  represent  non-interest  bearing
     prepayments  from Vermont  Yankee  Nuclear  Power Corp.  and Yankee  Atomic
     Electric Company (the Yankee  Companies) for future production and delivery
     of uranium (see Note 2).

     Income Taxes - The Company  accounts  for income taxes under the  liability
     method of SFAS No.  109,  whereby  current  and  deferred  tax  assets  and
     liabilities  are  determined  based on tax rates and laws enacted as of the
     balance  sheet  date.  Deferred  tax expense  represents  the change in the
     deferred tax asset/liability balance.

     Foreign  Currency  Translation  - The  accounts of ESEC are  maintained  in
     Canadian  dollars,  its functional  currency.  Assets and  liabilities  are
     translated into U.S. dollars at the current exchange rate, and earnings  or
     losses are translated at the average exchange rate for the year;  resulting
     translation   adjustments   are   recorded  as  a  separate   component  of
     stockholders'  equity.  Transactional  gains and losses are recorded in the
     statement of operations.

     Royalty Income - Royalty income represents the Company's 3.5% gross royalty
     in  production  from the San Luis  gold  mine.  The mine is  leased  to and
     operated by a third  party.  During the years ended  December  31, 1996 and
     1995,  the Company had  $638,000  and  $978,000  in royalty  income,  which
     represented 86% and 94% of the Company's  revenues,  respectively.  The ore
     reserves at San Luis gold mine were depleted in the fourth quarter of 1996.

     Research and Development Costs - Research and development costs are charged
     to operations in the period incurred.

     Net  Income  (Loss)  Per Share - Net  income  (loss)  per  common  share is
     calculated  based upon the weighted  average  number of shares  outstanding
     during the years ended  December  31, 1996 and 1995.  In 1996,  convertible
     debt, stock options, and warrants have not been included in the calculation
     of net loss per share, as the result is anti-dilutive. In 1995, convertible
     debt, stock options,  and warrants have been included in the calculation of
     net income per share as the result is  dilutive.  Income per common  share,
     assuming full dilution, approximates primary income per common share.

     Stock-Based  Compensation - In fiscal 1996, the Company  adopted  Financial
     Accounting  Standards Board "Accounting for Stock-Based  Compensation" (FAS
     123).  FAS 123  encourages,  but does not  require,  companies to recognize
     compensation  expense for grants of stock, stock options,  and other equity
     instruments to employees  based on fair value.  Companies that do not adopt
     the fair value  accounting  rules must  disclose the impact of adopting the
     new method in the notes to the financial statements. Transactions in equity
     instruments with  non-employees for goods or services must be accounted for
     on the fair value  method.  The  Company  has elected not to adopt the fair
     value accounting  prescribed by FAS 123 for employees,  and is subject only
     to the disclosure requirements prescribed by FAS 123.


                                       F-8

<PAGE>
                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



     Use of Estimates - The preparation of the Company's  consolidated financial
     statements in conformity  with  generally  accepted  accounting  principles
     requires the Company's  management to make estimates and  assumptions  that
     affect the amounts reported in these financial  statements and accompanying
     notes. Actual results could differ from those estimates.  The Company makes
     significant  assumptions concerning the decommissioning cost of its solvent
     extraction facility,  the realizability of its investment in its extraction
     facility  and land and mineral  properties,  and the  ultimate  liabilities
     associated  with  asserted  claims  (see Note 8). Due to the  uncertainties
     inherent in the estimation  process and the significance of these costs, it
     is at least reasonably  possible that the Company's estimates in connection
     with these items could be further materially revised within the next year.


2. EARTH SCIENCES EXTRACTION COMPANY (ESEC):
   -----------------------------------------

     In 1978,  ESI  entered  into a  20-year  sales  agreement  with the  Yankee
     Companies,  covering  substantially all of the uranium produced from ESEC's
     solvent extraction facility.  During the period from 1980 through 1987, the
     Yankee Companies made required  prepayments for uranium under the agreement
     related to debt  service  on a term  loan,  which were in excess of uranium
     production  from the  facility and which have  accumulated  as a prepayment
     balance.

     In September  1987,  ESEC  suspended  operations  due to the  suspension of
     fertilizer  manufacturing  operations at an adjacent facility that provided
     feedstock  to ESEC.  In May 1990,  ESI and the Yankee  Companies  agreed to
     modify the long-term sales  agreement to allow ESEC to develop  alternative
     uses at the  facility  with the  provision  that  certain  royalties or net
     profits from the facility be paid to the Yankee Companies,  and provide for
     repayment of any remaining prepayment balance over a seven year period with
     interest  accruing  as of  January  1,  2005 at 8.50%  and  with  repayment
     commencing no earlier than  December 31, 2004.  The  prepayment  balance is
     collateralized  by the  solvent  extraction  facility,  certain  underlying
     agreements,  the land lease  where the  facility  is  located,  and certain
     leases held by the Company in Idaho. ESI is a co-obligor of this liability.

     In November  1996,  the Company  reached  agreement in  principal  with the
     Yankee  Companies to purchase a 270-day  option (the "Option") for $100,000
     to terminate their deferred revenue position in the Calgary facility. Under
     the terms of the option,  if  exercised,  the Company  would pay the Yankee
     Companies  $1,150,000 and grant them a 10-year non-cost bearing net profits
     royalty on  activities  at the  Calgary  facility.  Payments  to the Yankee
     Companies would be capped at a total of $6 million,  excluding the $100,000
     option payment,  and the Company could purchase the royalty interest for $3
     million plus  $50,000 per year after the  exercise  date for a total of not
     more than  $3,250,000.  The  definitive  documents for this  agreement were
     signed in January 1997.

     At December 31, 1996,  the Company's  consolidated  balance sheet  included
     assets with a remaining  net book value of  approximately  $9,732,000  that
     relates to the extraction  facility,  consisting of other current assets of
     $28,000  and  the  extraction   facility  with  a  net  carrying  basis  of
     $9,704,000,  and  approximately  $9,382,000 of deferred revenues related to
     the long-term  sales  contract for output from the facility and $221,000 in
     accrued  decommissioning costs. The recovery of the Company's investment in
     these assets and its ability to fulfill the terms of its agreement with the
     Yankee Company, is dependent upon future operations of the facility, a sale

                                       F-9

<PAGE>
                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

     of such  assets  or  exercise  of the  Option.  The  Company  currently  is
     modifying the extraction  facility for the production of purified phosphate
     products and expects to be in production in the second quarter of 1997.


3. PROPERTY, PLANT AND EQUIPMENT:
   ------------------------------

     Property,  plant and  equipment  as of December 31, 1996 is  summarized  as
     follows:

         Extraction facility                                   $14,494,000
         San Luis Land and mineral property                        577,000
         Land and mineral properties, including deferred
            exploration and development costs (a)                1,518,000
         Building and other equipment                              609,000
                                                               -----------

                                                               $17,198,000
                                                               ===========
- ---------
            
(a)  These land and mineral  properties are not in  production.  The recovery of
     the  Company's   investment  in  these  assets  is  dependent  upon  future
     production from such assets or a sale of the Company's interests therein.


     The Company's  mineral  properties  include patented and unpatented  mining
     claims;  the latter  requiring  annual  rental fees to maintain  possessory
     titles.  Certain  bills have been  introduced  to in both  houses of United
     States  which could  adversely  effect the  potential  for  development  of
     existing  unpatented  mining claims and the economics of operating mines on
     Federal unpatented mining claims if enacted.  All of these bills are in the
     early stages of the  legislative  process and it is not possible to predict
     whether any change in the mining  laws will be enacted or if  enacted,  the
     form the changes may take. In addition,  the Company  leases or has options
     to lease various other claims.  Such leases are cancelable at the option of
     the Company.


4. LONG-TERM DEBT:
   ---------------
                                                                December 31,
                                                                    1996
   Related Parties:                                             ------------
   ----------------

     Note payable to stockholder  at 9%.  Principal and
     accrued  interest  payments  are due in  1998  and
     convertible to common stock at $.54 per share.               $27,000

     Notes  payable to  officers/directors  at 8%, with
     quarterly  payments of interest  and  principal of
     $250  and  the  balance  due  October  31,   1998,
     collateralized by real property.                               9,000


                                      F-10

<PAGE>

                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS





     Notes   payable  to   officers/directors   at  9%,
     principal and interest payments are due January 1,
     1998.  However,  a  $58,000  note  payable  to  an
     officer/director  has been  classified as current,
     as the Company lent the officer/director a similar
     amount  subsequent to December 31, 1996. The notes
     are collateralized by a mining property. Principal
     and accrued  interest  are  convertible  to common
     stock at $.54 per share.                                    189,000
                                                                --------   
                                                                $225,000
                                                                ========

     Future maturities of notes payable and long-term debt are as follows:

         1997                                                   $ 58,000
         1998                                                    167,000
                                                                --------
                                          
                                                                $225,000
                                                                ========

     During  1996,  the  Company  settled a note  payable  and  related  accrued
     interest  totaling  $605,000 with the Province of Alberta for approximately
     $75,000 in cash. As a result,  the Company recorded a extraordinary gain on
     debt  extinguishment  of  $371,000  in 1996,  net of income tax  expense of
     $159,000.

5. INCOME TAXES:
   -------------

     Deferred  tax  assets  (liabilities)  are  comprised  of the  following  at
     December 31, 1996:
                                                      CANADIAN
                                                     SUBSIDIARY        U.S.
                                                     OPERATIONS     Operations
                                                     ----------     ----------
Deferred assets (liabilities):
        Net operating loss carryforward             $   405,000     $ 1,122,000
        Tax credit carryforwards                         80,000          13,000
        Depreciation differences                        671,000          13,000
        Mining properties basis differences                --           364,000
        Deferred revenue                              3,114,000            --
        Other                                           140,000         115,000
                                                    -----------     -----------
Net deferred tax assets                               4,410,000       1,627,000
Less valuation allowance                             (4,410,000)     (1,627,000)
                                                    -----------     -----------

Net deferred tax assets                             $      --       $      --
                                                    ===========     ===========



                                      F-11

<PAGE>
                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

     The  valuation  allowance  increased  $372,000 for the Canadian  subsidiary
     operations and decreased  $356,000 for U.S.  operations  since December 31,
     1995.

     The  Company's  actual  effective  income  tax rate  differs  from the U.S.
     Federal  corporate  income  tax rate of 34% as  follows  for the year ended
     December 31, 1996:

         Tax at statutory rate                                     $   2,000
         Non-deductible expenses:
            Equity in loss of foreign subsidiary                     107,000
            Other                                                      4,000

        Reduction in valuation allowance due to usage of NOL
            carryforward and temporary differences utilized         (113,000)
                                                                    -------- 

        Tax at effective tax rate                                   $      -
                                                                    ======== 

     The  Company  has  remaining  U.S. a net  operating  loss  carryforward  at
     December  31, 1996 of  approximately  $3,000,000,  which if not utilized to
     reduce  taxable  income in future  periods,  will  expire in the years 1996
     through 2007. In addition,  the Company has $13,000 of alternative  minimum
     tax credit which is available to offset future U.S.  regular tax liability.
     The net operating loss carryforward  related to the Canadian subsidiary and
     operations  is  $799,000  (U.S.).   The  Canadian   investment  tax  credit
     carryforward for this subsidiary is $80,000 (U.S.).


6. STOCKHOLDERS' EQUITY:
   ---------------------

     The Company has reserved 125,000 shares for awards under a stock bonus plan
     established  in  1978.  As of  December  31,  1996,  69,900  shares  remain
     available for award under the plan.

     During 1996,  the Company  received net proceeds of $899,000 and $1,055,000
     from  offerings of  convertible  debt and common stock,  respectively.  The
     convertible  debt was  subsequently  converted to common stock during 1996.
     Certain   officers/directors   also  converted   notes  payable,   totaling
     approximately  $113,400  to  shares of common  stock  under  terms of their
     notes, and were issued a total of 210,060 shares.

     In August  1996,  the  Company  engaged  an entity to provide  the  Company
     investor  relation services over a five-year period. In addition to certain
     cash payments, the Company issued options to the entity to purchase 300,000
     shares of common stock at prices  ranging from $2.00 to $4.00.  The options
     expire at the rate of 60,000  per year  over  each of the  following  three
     years with the remaining  120,000  expiring in 2001.  The cash payments and
     related  expense  associated with the option grants are being expensed over
     the expected  period the services will be performed,  the majority of which
     is during the first year of the contract.


                                      F-12

<PAGE>


                                EARTH SCIENCES, INC. AND SUBSIDIARIES

                              NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



     The following is a table of options issued during 1996 and 1995:
<TABLE>
<CAPTION>
                                                                                                      Weighted
                                                                                                       Average
                                                            Employees          Non-employee           Exercise
                                                             Options             Options               Price
                                                            ---------          ------------           --------

     <S>                                                    <C>                 <C>                   <C>
     OPTIONS OUTSTANDING, January 1, 1995                     75,000               --                   $1.25
  
        Options granted                                       75,000               10,000               $1.33
                                                            --------            ---------             -------

     OPTIONS OUTSTANDING, December 31, 1995                  150,000               10,000               $1.29

        Options granted:
            Officers                                         250,000              --                    $1.69
            Consultants                                        --                  29,000               $1.69
            Investor relations                                 --                  60,000               $2.00
            Investor relations                                 --                 120,000               $2.60
            Investor relations                                 --                 120,000               $3.60
                                                            --------            ---------             -------

      OPTIONS OUTSTANDING, December 31, 1996                 400,000              339,000               $2.09
                                                            ========            =========             =======
</TABLE>

     For all options  granted during 1996 and 1995, the weighted  average market
     price of the  Company's  common  stock on the grant date was  approximately
     equal  to  the  weighted  average  exercise  price.  The  weighted  average
     remaining  contractual life for all options and warrants as of December 31,
     1996 was  approximately  2.3 years.  At December 31, 1996, all options were
     exercisable.  If not previously exercised,  options outstanding at December
     31, 1996, will expire as follows:
                                                            Weighted
                                                             Average
                                        Number of           Exercise
      Year                               Shares               Price
      ----                              ---------           ---------

      1997                              135,000               $1.58
      1998                              135,000               $1.79
      1999                              339,000               $1.89
      2000                               10,000               $1.50
      2001                              120,000               $3.60
                                        -------

                                        739,000
                                        =======

                                      F-13

<PAGE>


                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



     Pro Forma  Stock-Based  Compensation  Disclosures - The Company applies APB
     Opinion 25 and related  interpretations in accounting for its stock options
     and warrants which are granted to employees.  Accordingly,  no compensation
     cost has been  recognized  for grants of options and  warrants to employees
     since  the  exercise  prices  were  not less  than  the  fair  value of the
     Company's  common  stock on the grant  dates.  Had  compensation  cost been
     determined  based on an  estimate  of the fair  value  consistent  with the
     method of FAS 123 at the grant  dates for awards  under  those  plans,  the
     Company's  net income and earnings per share would have been reduced to the
     pro forma amounts indicated below.

                                                         Year Ended December 31,
                                                        ------------------------
                                                          1996           1995
                                                        ---------     ---------

     Net income (loss) applicable to common stockholders:
       As reported                                      $  (8,000)    $138,000
       Pro forma                                        $(255,000)    $ 83,000
     Net income (loss) per common share:
       As reported                                      $       -     $    .02
       Pro forma                                        $    (.04)    $    .01


     The fair value of each employee option and warrant granted in 1996 and 1995
     was estimated on the date of grant using the  Black-Scholes  option-pricing
     model with the following weighted average assumptions:

                                                   Year Ended December 31,
                                                 --------------------------
                                                   1996               1995
                                                 -------            -------

       Expected volatility                           67%               74%
       Risk-free interest rate                      5.7%              5.7%
       Expected dividends                             -                 -
       Expected terms (in years)                      3                 3


7. PROFIT SHARING RETIREMENT PLAN:
   -------------------------------

     Effective  January 1, 1988, the Company formed a defined  contribution  and
     401(k) plan to cover all eligible  employees.  The Company paid $30,196 and
     $28,715 as the contributions for 1996 and 1995,  respectively  based on 10%
     of the  eligible  employees'  annual  compensation.  In 1996 and 1995,  the
     Company  also  matched  401(K)  employee  contributions  up to 5% of  gross
     salary, totaling $15,098 and $14,358, respectively.



                                      F-14

<PAGE>
                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

8. CONTINGENCIES:
   --------------

     In 1993, a lawsuit was filed in the United  States  District  Court for the
     Northern  District  of  California  against  ESIC by Volvo  GM Heavy  Truck
     Corporation.  The claim  concerns  contamination  at a property in Oakland,
     California previously owned by a predecessor of ESIC. HM Holdings,  Inc., a
     prior  property  owner,  is also a defendant in the action.  The  complaint
     seeks recovery of response  costs,  damages,  and injunctive and regulatory
     relief. A court ordered mediation took place in January 1997 which led to a
     settlement in principle involving all the parties. Drafts of the settlement
     agreements are in process of being prepared, and if the final settlement is
     executed  with the terms  and  conditions  contained  in the  agreement  in
     principle, it will not have a material effect on the Company.


9. RELATED PARTY:
   --------------

     During  1995 and  1996,  the  Company  made  loans  to an  officer/director
     totaling  $130,000  at an  interest  rate of 8%. Not more than  $70,000 was
     outstanding at any one time and these loans, and the related interest, were
     paid back to the Company during the year. The loans were  collateralized by
     amounts  owing  Subsequent  to  year-end,   the  Company  loaned  the  same
     officer/director  $50,000 at 8% interest.  This loan is  collateralized  by
     amounts owing to the officer/director from the Company (see Note 4).


10. FAIR VALUE OF FINANCIAL INSTRUMENTS (FAS 107):
    ----------------------------------------------

     The  estimated  fair  values  for  financial  instruments  under  FAS  107,
     Disclosures  about Fair value of Financial  Instruments,  are determined at
     discrete  points  in time  based  on  relevant  market  information.  These
     estimates  involve  uncertainties  and cannot be determined with precision.
     The estimated  fair values of the  Company's  financial  instruments  which
     differ from their  recorded  values,  as measured on December  31, 1996 and
     1995, are as follows:

                                                    December 31, 1996
                                                    -----------------
                                                Carrying            Fair
                                                 Amount             Value
                                               -----------       ----------

     Long-term debt                            $   225,000       $  213,000
     Deferred revenues                           9,382,000        4,250,000

     The following  methods and assumptions were used to estimate the fair value
     of each class of financial instrument:

     Long-Term  Debt - The fair value is difficult to estimate as loans are from
     related  parties.  However,  fair  value was  estimated  using an effective
     borrowing rate of 15%.


                                      F-15

<PAGE>
                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



     Deferred Revenues - The fair value is estimated based on the total payments
     which would be required for terminate the deferred  revenue  position as of
     December 31, 1996.


11. CONCENTRATIONS OF CREDIT RISK:
    ------------------------------

     Credit risk  represents the accounting loss that would be recognized at the
     reporting  date  if   counterparties   failed   completely  to  perform  as
     contracted. Concentrations of credit risk (whether on or off balance sheet)
     that arise from  financial  instruments  exist for groups of  customers  or
     counterparties when they have similar economic  characteristics  that would
     cause  their  ability  to  meet  contractual  obligations  to be  similarly
     effected by changes in economic or other  conditions  described  below.  In
     accordance  with FASB Statement No. 105,  Disclosure of  Information  about
     Financial Instruments with Off-Balance-Sheet Risk and Financial Instruments
     with  Concentrations  of Credit Risk,  the credit risk amounts shown do not
     take  into  account  the value of any  collateral  or  security.  Financial
     instruments that subject the Company to credit risk consist  principally of
     money market instruments, receivables, and investments, which includes U.S.
     Treasury bills,  Certificates of Deposits,  corporate  bonds, and preferred
     stock.

     All of the Company's  royalty  income for the years ended December 31, 1996
     and December 31, 1995 was generated from one customer.  The Company will no
     longer receive  royalty income from this customer as the mining  operations
     related to the royalty  income ceased in the fourth  quarter of 1996.  This
     customer also is  responsible  for a  substantial  portion of the Company's
     receivables.

     At December 31, 1996,  receivables  totaled  $101,000.  For the years ended
     December  31,  1996 and 1995,  the  Company  had no bad debts.  The Company
     believes that no allowance for doubtful accounts is considered necessary.


12. SUBSEQUENT EVENTS:
    ------------------

     In January 1997, the Company  issued an additional  18,520 shares of common
     stock in return for  marketing  services.  Certain  officers of the Company
     also converted an additional $37,809 in debt to 70,020 in common stock. The
     Company  also  issued an  additional  20,000  shares of common  stock to an
     existing stockholder for net proceeds of $41,720.

     In February,  the Company signed a letter of intent to buy an environmental
     services  entity (ESE).  The Letter of Intent provided for (i) an immediate
     cash payment of $400,000 for a 4.8% equity interest,  (ii) a combination of
     $500,000  in cash and  $1.6  million  in notes to be paid at the  scheduled
     closing,  for the  acquisition of an additional  46.2% interest in ESE, and
     (iii) an option to acquire the  remaining equity interests (49%) in the ESE
     during the six months following May 1, 1998 for issuance of stock valued at
     approximately  $5.8 million.  In addition,  the  principals of the acquired
     company will have an option to require the Company to sell its 51% interest
     in ESE for the price  paid by ESI plus  interest  in the event ESI does not
     exercise its option.


                                      F-16

<PAGE>
                      EARTH SCIENCES, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

     In March 1997, the Company issued  $2,510,000 of 4% convertible  debentures
     (the   "Debentures")  for  which  the  Company  received  net  proceeds  of
     approximately $2,309,000. Interest is payable quarterly. The Debentures are
     convertible  at any time  following 45 days after the issuance  thereof and
     are all  automatically  convertible  on March 31, 1999.  The Debentures are
     convertible into shares of common stock based on a 25% discount from market
     price of the common stock at the time of conversions,  but not in excess of
     $3.25 per share. The Company is required to register the shares  underlying
     the debentures.  The Company may repurchase the debentures at a 25% premium
     under certain circumstances.


13. BUSINESS SEGMENT INFORMATION:
    -----------------------------

     The Company  has  identified  its  principal  business  segments as natural
     resource  exploration and development and ownership of a solvent extraction
     facility.  These  segments are shown in the  accompanying  table as ESI and
     ESIR, respectively. ESIR is located in Canada.


                                      F-17

<PAGE>
<TABLE>
<CAPTION>
                                          EARTH SCIENCES, INC. AND SUBSIDIARIES

                                       NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                                                                                                   Depletion,
                                  Inter-                            Net                          Depreciation
                   TOTAL          Segment                         Income        Identifiable         and           Capital
                  REVENUE         Revenue         Revenue         (Loss)           Assets        Amortization   Expenditures
                -----------    --------------   -----------     -----------     ------------     ------------   ------------
<S>             <C>           <C>               <C>             <C>              <C>             <C>             <C>        
1996:
- -----                                                                                                                        
  ESI           $ 2,167,000     $ 1,369,000     $   798,000     $   130,000      $ 4,207,000     $   122,000     $    89,000
  ESIR                 --              --              --          (138,000)      10,194,000         138,000         647,000
                -----------     -----------     -----------      -----------     -----------     -----------     -----------

  Total         $ 2,167,000     $ 1,369,000     $   798,000     $    (8,000)     $14,401,000     $   260,000     $   736,000
                ===========     ===========     ===========     ===========      ===========     ===========     ===========

1995:
- -----                                                                                                                
  ESI           $ 1,063,000     $    20,000     $ 1,043,000     $   422,000      $ 2,983,000     $    97,000     $    17,000
  ESIR                 --              --              --          (284,000)       9,732,000         137,000           9,000
                                -----------     -----------     -----------      -----------     -----------     -----------

  Total         $ 1,063,000     $    20,000     $ 1,043,000     $   138,000      $12,715,000     $   234,000     $    26,000
                ===========     ===========     ===========     ===========      ===========     ===========     ===========

</TABLE>
                                                                F-18








<PAGE>


                                    PART III

Item 9. Directors, Executive Officers, Promoters and Control Persons; Compliance
With Section 16(a) of the Exchange Act.

<TABLE>
<CAPTION>


                                         Positions                   Term          First Became
     Name              Age               and Offices                Expires          Director
- ------------------------------------------------------------------------------------------------

<S>                     <C>       <C>                                <C>               <C>   
Ramon E. Bisque         65         Chairman of the Board of          Annual            1963     
                                   Directors and Member of the       Meeting
                                   Executive Committee               Date, 1997

Duane N. Bloom          63         Director, Secretary, Chairman         "             196
                                   of the Executive Committee

Robert C. Hart          88         Director, Member of the Audit         "             1973   
                                   Committee

Robert H. Lowdermilk    60         Director, Member of the Audit         "             1990  
                                   Committee 

Mark H. McKinnies       45         Director, President, Treasurer,       "             1983  
                                   Member of the Executive Committee

Kristen R. Stevens      34         Director, Member of the Audit         "             1991     
                                   Committee
</TABLE>

         There are no  arrangements or  understandings  between any directors or
executive  officers and any other person or persons  pursuant to which they were
selected as director or executive officer.
         Each  of the  officers  named  above  serves  from  year to year at the
pleasure of the Board of Directors.  Drs. Bisque and Bloom were first elected to
the Board of  Directors  of Earth  Sciences,  Inc.`s  predecessor  company as of
February 18, 1963.  Drs.  Bisque and Bloom were first  elected to serve in their
present  offices on March 22, 1974.  Mr.  McKinnies  was elected  Controller  on
January 25, 1980,  Secretary on January 23, 1981 and as a Director and President
on February 23, 1983.
         Dr.  Bisque is  Professor  Emeritus  at the  Colorado  School of Mines,
Golden,  Colorado  and was a co-founder  of Earth  Sciences,  Inc. in 1963.  Dr.
Bisque has been  Chairman of the Board of  Directors,  a member of the Executive
Committee and a full or part time employee of Registrant since 1974.
         Dr. Bloom was a co-founder of Earth  Sciences,  Inc. in 1963. Dr. Bloom
has been employed full time by Registrant since that time.
         For  several  years  prior  to his  retirement  in 1974,  Mr.  Hart was
employed by Rio Algom, Ltd., Toronto, Canada, as Manager of Exploration for that
Company.  Since his retirement,  Mr. Hart has been self-employed as a geological
consultant.
         Mr. Lowdermilk has been president of Tectonic  Construction  Company, a
producer of washed aggregates and specialty sands since 1986. Mr. Lowdermilk has
a long history in construction and engineering projects.
         Mr.  McKinnies  is a CPA and worked for Peat,  Marwick,  Mitchell & Co.
before  commencing  employment  at  ESI.  Mr.  McKinnies  joined  Registrant  as
Accounting  Manager in  January,  1978,  was  appointed  Manager of Finance  and
Administration  in January,  1979, was elected  Controller of the Corporation in
January,  1980, was elected Secretary in January, 1981 and was elected President
in February, 1983.
         Ms.  Stevens has been an attorney  since her  graduation  from Stanford
University in 1987 and specializes in real estate and other business matters.
         Mr.  Hart is the  step-grandfather  of Ms.  Stevens.  No  other  family
relationship exists between any individuals named in Item 9(a) above.

                                       12

<PAGE>

Item 10.  Executive Compensation.
<TABLE>
<CAPTION>


                                                              Summary Compensation Table
                                            Annual Compensation                    Long Term Compensation
                                            -------------------                    ----------------------
Name of Individual and                                                                  Awards
Principal Position                          Year     Salary     Other(2)   Securities Underlying Options (#)
- -------------------------------------------------------------------------------------------------------------
<S>                                         <C>     <C>         <C>                     <C>   
Ramon E. Bisque(1)                          1996    $ 81,288    $11,706                 50,000
Chairman of the Board                       1995    $ 74,765    $11,148                 25,000
                                            1994    $ 72,630    $10,617                 25,000

Duane N. Bloom(1)                           1996    $107,240    $15,607                 50,000
Chairman of the Executive Committee         1995    $101,931    $14,864                 25,000
Secretary and Director                      1994    $ 96,927    $14,156                 25,000

Mark H. McKinnies(1)                        1996    $101,568     $15,142               150,000
Director, President and Treasurer           1995    $ 96,763     $13,735                25,000
                                            1994    $ 92,182     $13,735                25,000

</TABLE>

(1)  Member of the Executive Committee of Registrant,  which performs the duties
     of the Chief Executive Officer.

(2)  Amounts  represent pension and matching 401(k) payments made to a qualified
     plan by Registrant for the benefit of the named individual.

<TABLE>
<CAPTION>

                                        Options/SAR Grants in Last Fiscal Year
                                                  Individual Grants
                           Number of Securities    % of Total Options
                           Underlying Options      Granted to Employees   Exercise or Base      Expiration
Name                       Granted (#)             in Fiscal Year           Price ($/Sh)           Date
- -----------------------------------------------------------------------------------------------------------
<S>                         <C>                        <C>                     <C>               <C>  
Ramon E. Bisque             50,000                     18%                     $1.69             10/7/99
Duane N. Bloom              50,000                     18%                     $1.69             10/7/99
Mark H. McKinnies          150,000                     54%                     $1.69             10/7/99
</TABLE>

All options shown for each individual were exerciseable as of December 31, 1996,
except the option of Mr McKinnies to acquire 100,000 shares which is exercisable
after April 30, 1997.

<TABLE>
<CAPTION>


                         Aggregated Option Exercises in Last Fiscal Year and FY-End Option Values

                    Share Acquired    Value     Number of Securities Underlying    Value of Unexercised
Name                on Exercise     Realized   Unexercised Options at FY-End (#)     Options at FY-End
- --------------------------------------------------------------------------------------------------------
<S>                       <C>       <C>                      <C>                          <C>     
Ramon E. Bisque           0         $     0                  100,000                      $195,250
Duane N. Bloom            0         $     0                  100,000                      $195,250
Mark H. McKinnies         0         $     0                  200,000                      $370,000
</TABLE>

All options shown for each individual were exerciseable as of December 31, 1996.

Compensation of Directors
Directors  who are not  also  executive  officers  of  Registrant  are  accruing
compensation  in the  amount of $500 per  quarter,  which  amount may be paid by
issuance of Registrant's  common stock, and are reimbursed for any out-of-pocket
expenses incurred in attendance at meetings. The number of shares of stock which
may be issued will be determined using the quarterly compensation amount and the
average between the bid and asked price quoted during the quarter.  No stock was
issued or other  payments  made in 1996 and $30,000 is owing as of December  31,
1996.

Item 11.  Security Ownership of Certain Beneficial Owners and Management.
The following table sets forth the number of shares of the  Registrant's  common
stock  owned  beneficially  as of  March  14,  1997,  by each  person  known  by
Registrant to have owned beneficially more than five percent of such shares then
outstanding,  by each  person  serving as a named  officer  and/or a director of
Registrant and by all of  Registrant's  officers and directors as a group.  With
the exception of Mr.  Lowdermilk , each of the individuals  named below has sole
voting and investment power for the respective shares.

                                       13

                                                   


<PAGE>
<TABLE>
<CAPTION>


Name and Address        Amount and Nature of Beneficial Ownership         Percent of Class
- -------------------------------------------------------------------------------------------

<S>                                    <C>                                   <C>     
Ramon E. Bisque                        512,341 (1)                            5.82%
9113 Fern Way
Golden, CO

Duane N. Bloom                         730,710 (2)                            8.23%
5565 Pine Ridge Rd.
Golden, CO

Robert C. Hart                          31,871                          Less then 1%
4 Willow St.
Waterloo, Ontario

Robert H. Lowdermilk                   463,666 (3)                            5.38%
100 Cherry St.
Denver, CO

Mark H. McKinnies                      265,565 (4)                            3.00%
10134 S. Pinedale Dr.
Conifer, CO

Kristen R. Stevens                         200 (5)                      Less then 1%
667 N. Marine Dr.
Tamuning, Guam

Directors and Officers as            1,972,482 (6)                           21.55%
a Group (6 individuals)
</TABLE>

Notes to Item 11:
(1)  Included in the amount shown are 186,531 shares to which Dr. Bisque has the
     right to acquire  beneficial  ownership through  convertible debt and stock
     options.
(2)  Included in the amount shown are 257,461  shares to which Dr. Bloom has the
     right to acquire  beneficial  ownership through  convertible debt and stock
     options.
(3)  Included in the amount shown are 125,000  shares  registered in the name of
     Mr. Lowdermilk's wife, Ann Gragg Lowdermilk.
(4)  Included in the amount shown are 236,025 shares to which Mr.  McKinnies has
     the right to acquire  beneficial  ownership  through  convertible  debt and
     stock options.
(5)  Ms.  Stevens  is the  step  granddaughter  of Mr.  Hart and  disclaims  any
     beneficial ownership in his shares.
(6)  The amount shown includes 680,017 shares to which  individuals in the group
     have the right to acquire beneficial ownership through convertible debt and
     stock options.

Item 12.  Certain Relationships and Related Transactions.
(a) At  various  times  during  1996 and 1995,  Dr.  Bisque  borrowed a total of
$70,000 and $130,000,  respectively,  from Registrant at an interest rate of 8%.
Not more than  $85,000 was  outstanding  at any one time in 1995 and these loans
were paid back to Registrant prior to each year end. All of the amounts borrowed
were  collateralized  by amounts owing to Dr. Bisque by Registrant and were made
available  from  funds  that  would  have   otherwise  only  earned   Registrant
approximately 5%.

Item 13.  Exhibits and Reports on Form 8-K.

                                       14

<PAGE>


(a) Exhibits and Index of Exhibits (all exhibits are  incorporated  by reference
except  Exhibit 27 which was filed  electronically;  Exhibits 3.1, 4.3, and 10.5
through 10.9 are filed herewith,  all other such Exhibits were filed as Exhibits
to Registrant's 1993 Form 10KSB).


No.       Description
- ---       -----------

3.1       Articles of Incorporation, as amended and restated.
3.2       By-laws.
4.1       Agreement for Conversion Rights dated July 31, 1991.
4.2       Conversion Agreement dated June 23, 1993.
4.3       Form of Convertible Debenture due March 31, 1999.
10.1      Uranium Extraction Agreement dated May 14, 1976 between Registrant
           and Western Co-operative Fertilizers, Limited.
10.2      Lease dated April 3, 1978 between Western Co-operative Fertilizers,
           Limited and ESI Resources, Ltd.
10.3      Mining Lease dated October 1, 1987 between Registrant and Battle
           Mountain Gold  Company.
10.4      Letter of Intent - Gold Joint Venture in Venezuela dated December 31,
           1987 between Registrant and GEO C.A.
10.5      Cerro Gordo Letter Agreement dated September 1, 1996 between
           Registrant and Martin Trost Associates.
10.6      Option Agreement dated January 20, 1997 between Registrant and Yankee
           Atomic Electric Company and Vermont Yankee Nuclear Power Corporation.
10.7      Letter of Intent among ADA Environmental Solutions LLC, ADA-ES, Inc.
           their respective members and shareholders and Registrant.
10.8      Securities Purchase Agreement dated March 21, 1997.
10.9      Registration Rights Agreement dated March 21, 1997.
21.1      Subsidiaries of Registrant.
27        Financial Data Schedule.

(b)  Reports on Form 8-K. None.


                                       15


<PAGE>


SIGNATURES
In accordance  with Section 13 or 15(d) of the Exchange Act, the  Registrant has
duly caused this report to be signed on its behalf by the undersigned, thereunto
duly authorized.

Earth Sciences, Inc.
 (Registrant)

By /s/ Mark H. McKinnies                   /s/ Duane N. Bloom
   ----------------------------                --------------------------------
Mark H. McKinnies, President                   Duane N.  Bloom,  Member of
and Principal Financial Officer               Executive Committee

Date   March 21, 1997                               March 21, 1997
       --------------                               --------------

In  accordance  with the Exchange  Act, this report has been signed below by the
following  persons on behalf of the  Registrant and in the capacities and on the
dates indicated.

/s/ Ramon E. Bisque                         /s/ Robert H. Lowdermilk
- ----------------------------------          -----------------------------------
Ramon E.  Bisque                                Robert H. Lowdermilk
Chairman of The Board of Directors              Director

March 21, 1997                                  March 21, 1997
- --------------                                  --------------
   Date                                               Date

/s/Duane N. Bloom                           /s/ Mark H. McKinnies
- ----------------------------------          -----------------------------------
Duane N.  Bloom, Director                       Mark H. McKinnies, Director

March 21, 1997                                  March 21, 1997
- --------------                                  --------------
   Date                                               Date

                                       16




                                                                   Exhibit 3.1
                              Amended and Restated
                            ARTICLES OF INCORPORATION
                                       OF
                              EARTH SCIENCES, INC.


                                    ARTICLE I
                                    ---------

     The name of the corporation is EARTH SCIENCES, INC.

                                   ARTICLE II
                                   ----------

     The nature, objectives and purposes of the business to be transacted by
the corporation shall be:

     1. To prospect,  explore,  purchase or otherwise acquire, either absolutely
or conditionally, and either solely or jointly with others, to sell, dispose of,
and deal in lands  and  interests  in and over  lands  and  properties  of every
description including mines, works, steamships,  railways,  tramways,  telegraph
and telephone lines, wharves, docks, canals, waterways, electric light and power
plants, quarries,  forests, pits mills, buildings,  machinery,  mining, milling,
concentrating,  smelting, refining, and manufacturing plants, ores and minerals,
and  claims  and  interests  therein,   and  shares  in  the  capital  stock  of
corporations  owning or operating the same, in any part of the world,  upon such
terms and in such manner as may be deemed advisable;  to develop,  improve,  and
work the same; to conduct mining operations of every kind, and to operate plants
for reducing, smelting, and refining ores, minerals matte, and bullion; to enter
into  contracts  with  other  persons,  firms  or  corporations  (including  any
corporation  in which the  directors  of this company may be  interested,  or of
which they may be officers or directors, or which may be the owner of a large or
controlling interest of the stock of this company)for the reduction,  treatment,
smelting, and refining of the ores, minerals,  matte and bullion produced by the
corporation hereby organized; to search for, obtain, and disseminate information
as to mines, mining districts, mining claims, water claims, water rights and any
other rights,  claims,  and property;  to examine,  investigate,  and secure the
titles to lands,  mines,  minerals  ores, and mining or other rights and claims,
and interests therein,  in any part of the world; to employ and send to any part
of the world,  and to pay the fees,  costs,  charges,  and expenses of,  agents,
including  persons and  corporations,  mining  experts,  legal counsel,  and all
persons  useful in  examining,  investigating,  and securing the title to lands,
mines, minerals,  ores, mining and other rights and claims, or interest therein,
in any part of the world; to print, publish,  advertise,  and circulate reports,
maps, plans, prospectuses,  and documents of every kind whatsoever,  directly or
indirectly relating to lands, mines, minerals, ores, and mining or other rights,
concessions, and claims in any part of the world, or to the title thereto, or to
the  organization,  operations,  and  objects of this  company,  or of any other
company.

     2. to manufacture,  sell,  import,  export,  purchase,  hold, own,  assign,
transfer,  invest,  trade,  and  deal in or with all  kinds  of ores,  minerals,
metals, and the products and by-products thereof, and goods, wares, merchandise,
and other  materials and property of every class and  description  necessary for
the  convenient  and  proper   accomplishment  of  the  purposes  or  objectives
enumerated herein; to acquire,  transport,  ship, buy, sell,  contract for, deal
in,  engage in trade or commerce in, or  otherwise  dispose of products of ores,
mineral substances,  mineral compounds,  metals, and intermediate  metallurgical
compounds or substances obtained from the mining, production,  manufacturing, or
refining of ores, minerals or metals which are for export or are to be exported,
or are in the course of being  exported,  or have been  exported from the United
States, to any foreign nation;  or to act as the agent,  broker,  consignee,  or
factor for others in respect to the foregoing.

     3. To carry on the business of advisors,  consultants,  and managers in any
or all fields of the earth sciences;  to engage in a general  counseling service
and to gather, compile, and disseminate information, data, and advice in respect
to matters of a commercial,  financial,  statistical,  professional and business
nature,  and to render and furnish  services  pertinent  thereto;  to enter into
agreements with any corporation,  association,  individual, or enterprise and to
carry on and  undertake any business and to render any service which it may seem
to the company capable of being  conveniently  carried on in connection with the
above, and in promoting,  advising,  consulting with, maintaining, and operating
any business enterprise;  to contract for, acquire, plan,  superintend,  manage,
operate,  cooperate  with,  and assist  in, the  maintenance  and  operation  of
business  enterprises  of any and every kind,  and to do and carry on such other
work of every kind and of any and every nature; to own, operate,  mange, assist,
finance, audit, supervise, and otherwise deal with corporations, associations,


                                       


<PAGE>

business,  financial, and other enterprises; and to aid and assist in any manner
any corporation,  association or reorganization with which this company may have
business relations.

     4. To engage in any lawful act or activity  for which  corporations  may be
organized under the laws of the State of Colorado.

     5. The foregoing enumeration of purposes shall not be deemed to limit or to
restrict in any manner the exercise of other and further rights and powers which
may now or hereafter  be allowed or permitted by law; the purposes  specified in
each of the  paragraphs  of this Article II shall not be restricted by reference
to or inference from the terms of any other paragraph,  but shall be regarded as
independent purposes.

                                   ARTICLE III
                                   -----------

     The affairs and management of this  corporation are to be under the control
of a Board of  Directors.  The number of directors  shall be as specified in the
By-laws of the  corporation,  but in no event shall there be fewer than three or
more than fifteen directors of the corporation

                                   ARTICLE IV
                                   ----------

     The  aggregate  number  of  shares  which the  corporation  shall  have the
authority to issue shall be 25,000,000, which shall consist of a single class of
shares designated "Common Stock" of par value of one cent per share.

                                    ARTICLE V
                                    ---------

     All stock shall be fully paid and nonassessable.

                                   ARTICLE VI
                                   ----------

     The stockholders of this  corporation  shall not have a preemptive right to
subscribe  to any or all  issues  of  stock or  other  securities  of any or all
classes of stock of the  corporation  or  securities  convertible  into stock or
which carry stock purchase warrants or privileges.

                                   ARTICLE VII
                                   -----------

     Cumulative voting shall not be allowed.

                                  ARTICLE VIII
                                  ------------

     The principal place of business of said corporation shall be Georgetown, in
the County of Clear Creek,  State of Colorado,  and the principal office of said
corporation  shall be 1700  Broadway,  Denver,  Colorado  80202 or at such other
location as the Directors of the corporation shall hereafter select.

                                        2


                          FORM OF CONVERTIBLE DEBENTURE


"THESE  SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE  "SECURITIES  ACT"), OR THE SECURITIES  LAWS OF ANY STATE,  AND ARE
BEING  OFFERED  AND  SOLD  PURSUANT  TO  AN  EXEMPTION  FROM  THE   REGISTRATION
REQUIREMENTS  OF THE SECURITIES ACT AND SUCH LAWS.  THESE  SECURITIES MAY NOT BE
SOLD OR TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER
THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE  EXEMPTION FROM THE  REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT OR SUCH OTHER LAWS."


                            4% CONVERTIBLE DEBENTURE
                               Due March 31, 1999

March __, 1997
$2,510,000

No. ESI-1A

     Earth  Sciences,  Inc., a Colorado  corporation  with  principal  executive
offices located at 910 12th Street, Golden, Colorado 80101 the ("Company"),  for
value  received,  hereby  promises to pay to the Holder (as defined  below),  or
order, on March 31, 1999 (the "Maturity  Date") the principal sum of Two Million
Five Hundred and Ten Thousand  Dollars and No Cents  ($2,510,000.00)  and to pay
interest thereon from the date of original issuance (or the most recent interest
payment  date to which  interest has been paid),  quarterly in arrears,  on each
March 31, June 30, September 30 and December 31 of each year, commencing on June
30, 1997, at the rate of 4% per annum (the "Debenture Interest Rate"), until the
principal  of this  Debenture  has  been  paid in full or duly  and  irrevocably
provided  for. The interest so payable and duly and  punctually  provided for on
any  interest  payment  date  shall be paid to the  Person  in whose  name  this
Debenture is registered at the close of business on the 15th day next  preceding
the applicable  interest  payment date and all interest payable on the principal
amount of this  Debenture  shall be  calculated on the basis of 365-day year for
the actual number of days elapsed.

                                    ARTICLE 1
                                   DEFINITIONS

     SECTION 1.1 Definitions. The terms defined in this Article whenever used in
this Debenture have the following respective meanings:

          (a)  "Additional  Capital Shares" has the meaning set forth in Section
3.1(c).

                                                   

<PAGE>

          (b)  "Affiliate"  has the meaning  ascribed to such term in Rule 12b-2
under the Securities Exchange Act of 1934, as amended.

          (c) "Business Day" means a day other than Saturday,  Sunday or any day
on which banks  located in the state of New York are  authorized or obligated to
close.

          (d) "Capital  Shares"  means the Common Shares and any other shares of
any other class or series of common stock,  whether now or hereafter  authorized
and however designated,  which have the right to participate in the distribution
of earnings and assets (upon  dissolution,  liquidation  or  winding-up)  of the
Company.

          (e) "Closing Date" means March __, 1997.

          (f)  "Common  Shares" or  "Common  Stock"  means  shares of the common
stock, $.01 par value, of the Company.

          (g) "Common Stock Issued at  Conversion"  when used with  reference to
the  securities  issuable upon  conversion of this  Debenture,  means all Common
Shares now or hereafter  Outstanding and securities of any other class or series
into  which the  Debenture  hereafter  shall have been  changed or  substituted,
whether now or hereafter created and however designated.

          (h) "Company" means Earth Sciences, Inc., a Colorado corporation,  and
any successor or resulting corporation by way of merger, consolidation,  sale or
exchange of all or substantially all of the Company's assets, or otherwise.

          (i) "Conversion Date" means any day on which all or any portion of the
principal  amount  of  this  Debenture  is  converted  in  accordance  with  the
provisions hereof.

          (j) "Conversion Notice" has the meaning set forth in Section 3.2.

          (k) "Conversion Price" has the meaning set forth in Section 3.1.

          (l) "Conversion Ratio" has the meaning set forth in Section 3.1.

          (m)  "Current  Market  Price" on any date of  determination  means the
closing  bid price of a Common  Share on such day as  reported  on the  National
Association of Securities  Dealers,  Inc. Automated  Quotation  ("NASDAQ") Small
Market System or, if the Common Shares are listed on the NASDAQ  National Market
Capitalization  System  or  on  an  established  United  States  national  stock


                                        2

<PAGE>

exchange, the  closing  price of a Common  Share on such day as reported by such
system or exchange (provided,  that the NASDAQ quotation shall shall be utilized
in the event of the dual listing of the Common Shares).

          (n) "Debenture" means this 4% Convertible Debenture due March 31, 1999
of the Company or such other  convertible  debentures  or  Debentures  exchanged
therefor as provided in Section 2.1.

          (o) "Default  Interest Rate" shall be equal to the Debenture  Interest
Rate plus an additional 4% per annum.

          (p) "Event of Default" has the meaning set forth in Section 6.1.

          (q) "Holder" means ___________________,  any successor thereto, or any
Person to whom this Debenture is subsequently transferred in accordance with the
provisions hereof.

          (r)  "Market  Disruption  Event"  means any event  that  results  in a
material suspension or limitation of trading of Common Shares on NASDAQ.

          (s) "Market  Price" per Common  Share means the average of the closing
bid  prices  of the  Common  Shares  as  reported  on the  NASDAQ  Small  Market
Capitalization  System for the five Trading Days in any Valuation  Period or, if
the  Common  Shares are listed on the  NASDAQ  National  Market  System or on an
established  United States national stock  exchange,  the average of the closing
prices of the Common Shares for the five Trading Days in any Valuation Period as
reported by such system or exchange  (provided,  that the NASDAQ quotation shall
shall be utilized in the event of the dual listing of the Common Shares).

          (t) "Maximum Rate" has the meaning set forth in Section 6.3.

          (u) "Outstanding" when used with reference to Common Shares or Capital
Shares (collectively, "Shares"), means, on any date of determination, all issued
and  outstanding  Shares,  and includes  all such Shares  issuable in respect of
outstanding scrip or any certificates  representing fractional interests in such
Shares; provided,  however, that any such Shares directly or indirectly owned or
held by or for the account of the Company or any Subsidiary of the Company shall
not be deemed "Outstanding" for purposes hereof.


                                        3

<PAGE>

          (v) "Person" means an individual,  a  corporation,  a partnership,  an
association,   a  limited   liability   company,   a   unincorporated   business
organization,  a trust or other entity or  organization,  and any  government or
political subdivision or any agency or instrumentality thereof.

          (w) "Registration  Rights  Agreement" means that certain  registration
rights   agreement   dated   March   __,   1997,   between   the   Company   and
________________________.

          (x) "SEC" means the United States Securities and Exchange Commission.

          (y) "Securities Act" means the Securities Act of 1933, as amended, and
the rules and regulations of the SEC thereunder, all as in effect at the time.

          (z)  "Securities  Purchase  Agreement"  means that certain  Securities
Purchase   Agreement   dated   March  __,   1997,   between   the   Company  and
___________________________.


          (aa)  "Subsidiary"  means  any  entity  of which  securities  or other
ownership  interests  having  ordinary  voting  power to elect a majority of the
board of directors  or other  persons  performing  similar  functions  are owned
directly or indirectly by the Company.

          (bb)  "Trading  Day"  means  any day on which  purchases  and sales of
securities  authorized  for quotation on the NASDAQ Small Market  Capitalization
System  are  reported  thereon  and on  which no  Market  Disruption  Event  has
occurred.

          (cc) "Valuation Event" has the meaning set forth in Section 3.1.

          (dd) "Valuation  Period" means the five Trading Day period immediately
preceding the Conversion Date.

          All  references  to "cash" or "$" herein means  currency of the United
States of America.

                                    ARTICLE 2
                             EXCHANGES AND TRANSFER

     SECTION 2.1 Exchange and Registration of Transfer of Debentures. The Holder
may, at its option,  surrender this Debenture at the principal executive offices
of the Company and receive in exchange therefor a Debenture or Debentures,  each
in the  denomination  of  $10,000  or  integral  multiples  of  $1,000 in excess
thereof,  dated as of the date of this Debenture,  and,  subject to Section 4.2,
payable to such Person or order as may be designated by such Holder. The

                                        4

<PAGE>

aggregate  principal  amount  of  the  Debenture  or  Debentures   exchanged  in
accordance  with this  Section 2.1 shall equal the  aggregate  unpaid  principal
amount of this Debenture as of the date of such  surrender;  provided,  however,
that upon any  exchange  pursuant to this  Section 2.1 there shall be filed with
the  Company  the name and  address  for all  purposes  hereof of the  Holder or
Holders  of the  Debenture  or  Debentures  delivered  in  such  exchange.  This
Debenture,  when  presented  for  registration  of transfer  or for  exchange or
conversion,  shall (if so  required  by the  Company)  be duly  endorsed,  or be
accompanied by a written instrument of transfer in form reasonably  satisfactory
to the Company duly executed, by the Holder duly authorized in writing.


     SECTION 2.2 Loss, Theft, Destruction of Debenture. Upon receipt of evidence
satisfactory  to the Company of the loss,  theft,  destruction  or mutilation of
this Debenture  and, in the case of any such loss,  theft or  destruction,  upon
receipt of indemnity or security reasonably  satisfactory to the Company, or, in
the  case of any  such  mutilation,  upon  surrender  and  cancellation  of this
Debenture,  the Company  shall make,  issue and  deliver,  in lieu of such lost,
stolen,  destroyed or  mutilated  Debenture,  a new  Debenture of like tenor and
unpaid  principal  amount dated as of the date hereof.  This Debenture  shall be
held and owned upon the express  condition  that the  provisions of this Section
2.2 are exclusive  with respect to the  replacement  of a mutilated,  destroyed,
lost or  stolen  Debenture  and shall  preclude  any and all  other  rights  and
remedies notwithstanding any law or statute existing or hereafter enacted to the
contrary  with respect to the  replacement  of negotiable  instruments  or other
securities without the surrender thereof.

     SECTION 2.3 Who Deemed Absolute  Owner.  The Company may deem the Person in
whose name this  Debenture  shall be registered  upon the registry  books of the
Company  to be,  and may  treat it as,  the  absolute  owner  of this  Debenture
(whether or not this  Debenture  shall be overdue)  for the purpose of receiving
payment of or on  account of the  principal  amount of this  Debenture,  for the
conversion of this Debenture and for all other  purposes,  and the Company shall
not be  affected  by any  notice to the  contrary.  All such  payments  and such
conversion  shall be valid and  effectual to satisfy and discharge the liability
upon this  Debenture to the extent of the sum or sums so paid or the  conversion
so made.



                                        5

<PAGE>

                                    Article 3
                             CONVERSION OF DEBENTURE

     SECTION 3.1 Conversion;  Conversion  Price. At the option of the Holder, at
any time, and from time to time,  from and after the 45th day following the date
of issuance of this Debenture  until this Debenture is paid in full at maturity,
this  Debenture  may be  converted,  either in whole or in part,  up to the full
principal  amount  hereof  (in  increments  of not less than  $10,000  principal
amount) into Common Shares (calculated as to each such conversion to the nearest
1/100th of a share), at a conversion price (the "Conversion Price") equal to 75%
of the  Market  Price  (the  "Conversion  Ratio"),  but in no  event  shall  the
Conversion  Price be in excess of $_______ per Common Share (the Current  Market
Price on the day preceding the execution by the Buyer of the Securities Purchase
Agreement);  provided,  however,  that the  Holder  shall  not have the right to
convert any  portion of this  Debenture  to the extent that the  issuance to the
Holder of Common  Shares upon such  conversion  would result in the Holder being
deemed  the  "beneficial  owner"  of 5% or more of the then  outstanding  Common
Shares within the meaning of Rule 13d-3 of the Securities  Exchange Act of 1934,
as amended.  At the Company's option,  the amount of accrued and unpaid interest
as of the Conversion  Date shall not be subject to conversion but instead may be
paid in cash as of the Conversion Date.

          Notwithstanding  anything  to  the  contrary  contained  herein,  if a
Valuation Event occurs during any Valuation Period, a new Valuation Period shall
begin on the Trading Day immediately  following the occurrence of such Valuation
Event and end on the Conversion Date;  provided that if a Valuation Event occurs
on the fifth day of any Valuation Period, then the Conversion Price shall be the
Current  Market Price of the Common Shares on such day; and  provided,  further,
that the Holder may,  in its  discretion,  postpone  such  Conversion  Date to a
Trading Day which is no more than five Trading Days after the  occurrence of the
latest  Valuation Event. In the event that the Holder deems the Valuation Period
to be other than the five Trading Days immediately prior to the Conversion Date,
the Holder shall give written  notice of such fact to the Company at the time of
conversion.

For purposes of this  Section  3.1, a  "Valuation  Event" shall mean an event in
which  the  Company  at any time  during a  Valuation  Period  takes  any of the
following actions:

          (a) subdivides or combines its Capital Shares;

          (b)  pays  a  dividend  in its  Capital  Shares  or  makes  any  other
distribution of its Capital Shares;


                                        6

<PAGE>

          (c) issues any  additional  Capital  Shares (the  "Additional  Capital
Shares"), otherwise than as provided in the foregoing Sections 3.1(a) and 3.1(b)
above,  at a price per share less, or for other  consideration  lower,  than the
Current Market Price in effect  immediately prior to such issuances,  or without
consideration, except for issuances under employee benefit plans consistent with
those presently in effect and issuances under  presently  outstanding  warrants,
options or convertible securities;

          (d) issues any  warrants,  options or other rights to subscribe for or
purchase  any  Additional  Capital  Shares  and the  price  per  share for which
Additional  Capital  Shares may at any time  thereafter be issuable  pursuant to
such  warrants,  options or other rights  shall be less than the Current  Market
Price in effect immediately prior to such issuance;

          (e)  issues  any  securities   convertible  into  or  exchangeable  or
exercisable  for  Capital  Shares  and the  consideration  per  share  for which
Additional Capital Shares may at any time thereafter be issuable pursuant to the
terms of such convertible,  exchangeable or exercisable securities shall be less
than the Current Market Price in effect immediately prior to such issuance;

          (f) makes a distribution of its assets or evidences of indebtedness to
the holders of its  Capital  Shares as a dividend  in  liquidation  or by way of
return of capital or other than as a dividend payable out of earnings or surplus
legally  available  for the payment of  dividends  under  applicable  law or any
distribution to such holders made in respect of the sale of all or substantially
all of the Company's assets (other than under the circumstances  provided for in
the foregoing Sections 3.1(a) through 3.1(e)), provided, in each case, that such
distribution  described in this Section  3.1(f) does not  constitute an Event of
Default; or

          (g) takes any  action  affecting  the  number of  Outstanding  Capital
Shares,  other than an action described in any of the foregoing  Sections 3.1(a)
through 3.1(f) hereof, inclusive, which in the opinion of the Company's Board of
Directors,  determined in good faith,  would have a material adverse effect upon
the rights of the Holder at the time of a conversion of this Debenture.

     SECTION 3.2  Exercise  of  Conversion  Privilege.  (a)  Conversion  of this
Debenture may be exercised, in whole or in part, by the Holder by telecopying an
executed and completed  notice of conversion in the form annexed hereto as Annex
I (the  "Conversion  Notice")  to the  Company  and  sending a  manually  signed
original  Conversion Notice and this Debenture to the Company by express courier


                                        7

<PAGE>

not later  than five (5)  Business  Days  next  following  the date on which the
telecopied  Conversion Notice has been transmitted to the Company.  Each date on
which a  Conversion  Notice is  telecopied  to and  received  by the  Company in
accordance with the provisions of this Section 3.2 shall constitute a Conversion
Date.  The Company shall convert the Debenture and issue the Common Stock Issued
at Conversion  effective as of the Conversion  Date. The Conversion  Notice also
shall state the name or names (with  addresses) of the persons who are to become
the holders of the Common Stock Issued at  Conversion  in  connection  with such
conversion.  Upon surrender for conversion,  this Debenture shall be accompanied
by a proper  assignment  hereof to the  Company  or be  endorsed  in  blank.  As
promptly  as  practicable  after the  receipt of the  Conversion  Notice and the
surrender of this  Debenture as  aforesaid,  but in any event not more than five
Business  Days  after  the  Company's  receipt  of such  Conversion  Notice  and
surrender of this Debenture, the Company shall (i) issue the Common Stock Issued
at Conversion in accordance with the provisions of this Article 3, and (ii) mail
for  delivery  by  overnight   courier  to  the  Holder  (X)  a  certificate  or
certificate(s)  representing  the number of Common Shares to which the Holder is
entitled by virtue of such conversion,  (Y) cash, as provided in Section 3.4, in
respect of any fraction of a Share issuable upon such conversion and (Z) cash in
the  amount of accrued  and unpaid  interest  as of the  Conversion  Date to the
extent payable in cash. Such conversion shall be deemed to have been effected at
the time at which the  Conversion  Notice  indicates  so long as this  Debenture
shall have been  surrendered  as  aforesaid  at such time,  and at such time the
rights of the Holder of this Debenture,  as such, shall cease and the Person and
Persons in whose name or names the Common  Stock Issued at  Conversion  shall be
issuable  shall be deemed to have  become the holder or holders of record of the
Common Shares  represented  thereby.  The Conversion  Notice shall  constitute a
contract between the Holder and the Company,  whereby the Holder shall be deemed
to  subscribe  for the  number of Common  Shares  which it will be  entitled  to
receive  upon  such  conversion  and,  in  payment  and   satisfaction  of  such
subscription  (and for any cash  adjustment to which it is entitled  pursuant to
Section  3.4), to surrender  this  Debenture and to release the Company from all
liability thereon. No cash payment aggregating less than $1.50 shall be required
to be given unless specifically requested by the Holder.

          (b) If, at any time  after  the date of this  Debenture,  the  Company
challenges,  disputes  or denies  the right of the  Holder  hereof to effect the
conversion  of this  Debenture  into Common  Shares or  otherwise  dishonors  or
rejects any Conversion  Notice  delivered in accordance with this Section 3.2 or
if at any time after the date of this  Debenture,  any third party commences any

                                        8

<PAGE>

lawsuit or proceeding or otherwise  asserts any claim before any court or public
or governmental authority which seeks to challenge, deny, enjoin, limit, modify,
delay or dispute the right of the Holder hereof to effect the conversion of this
Debenture into Common Shares,  then the Holder shall have the right,  by written
notice to the Company,  to require the Company to promptly redeem this Debenture
for cash at a  redemption  price equal to 125% of the  principal  amount  hereof
together with all accrued and unpaid interest  thereon (the "Mandatory  Purchase
Amount").  Under any of the  circumstances set forth above, the Company shall be
responsible  for the payment of all costs and expenses of the Holder,  including
legal fees and  expenses,  as and when  incurred in disputing any such action or
pursuing its rights hereunder (in addition to any other rights of the Holder).

     SECTION 3.3 [This Section Reserved]

     SECTION  3.4  Fractional  Shares.  No  fractional  Common  Shares  or scrip
representing  fractional  Common Shares shall be issued upon  conversion of this
Debenture.  Instead of any  fractional  Common Shares which  otherwise  would be
issuable  upon  conversion  of this  Debenture,  the  Company  shall  pay a cash
adjustment in respect of such fraction in an amount equal to the same  fraction.
No cash  payment  of less than  $[1.50]  shall be  required  to be given  unless
specifically requested by the Holder.

     SECTION 3.5  Reclassification,  Consolidation,  Merger or  Mandatory  Share
Exchange. At any time while this Debenture remains outstanding and any principal
amount hereof has not been converted,  in case of any reclassification or change
of Outstanding  Common Shares issuable upon conversion of this Debenture  (other
than a change in par value, or from par value to no par value per share, or from
no par  value  per  share  to par  value  or as a  result  of a  subdivision  or
combination  of  outstanding   securities   issuable  upon  conversion  of  this
Debenture) or in case of any  consolidation,  merger or mandatory share exchange
of the  Company  with  or into  another  corporation  (other  than a  merger  or
mandatory  share  exchange  with another  corporation  in which the Company is a
continuing  corporation  and which  does not result in any  reclassification  or
change,  other than a change in par value, or from par value to no par value per
share,  or from no par  value  per  share  to par  value,  or as a  result  of a
subdivision or combination of Outstanding  Common Shares upon conversion of this
Debenture), or in the case of any sale or transfer to another corporation of the
property  of the Company as an entirety or  substantially  as an  entirety,  the
Company, or such successor, resulting or purchasing corporation, as the case may
be, shall, without payment of any additional  consideration therefor,  execute a
new Debenture providing that the Holder shall have the right to convert such new

                                        9

<PAGE>


Debenture (upon terms and conditions not less favorable to the Holder than those
in effect pursuant to this Debenture) and to receive upon such exercise, in lieu
of each Common Share theretofore issuable upon conversion of this Debenture, the
kind and  amount  of  shares  of  stock,  other  securities,  money or  property
receivable upon such reclassification,  change, consolidation, merger, mandatory
share exchange, sale or transfer by the holder of one Common Share issuable upon
conversion of this Debenture had this Debenture been converted immediately prior
to  such  reclassification,   change,  consolidation,  merger,  mandatory  share
exchange or sale or transfer. The provisions of this Section 3.5 shall similarly
apply  to  successive  reclassifications,   changes,  consolidations,   mergers,
mandatory share exchanges and sales and transfers.

     SECTION 3.6 Adjustments to Conversion  Ratio. For so long as this Debenture
is  outstanding,  if the Company (i) issues and sells  pursuant to an  exemption
from registration under the Securities Act (A) Common Shares at a purchase price
representing  a percentage  of the Current  Market Price on the date of issuance
thereof that is lower than 75%,  (B) warrants or options with an exercise  price
representing a percentage of the Current Market Price on the date of issuance of
the  warrants  or  options  that is lower  than 75%,  except  for  stock  option
agreements or stock incentive  agreements,  or (C) convertible,  exchangeable or
exercisable securities with a right to exchange at lower than 75% of the Current
Market  Price on the Common  Shares on the date of  issuance or  conversion,  as
applicable, of such convertible,  exchangeable or exercisable securities, except
for stock option agreements or stock incentive  agreements;  and (ii) grants the
right to the purchaser(s)  thereof to demand that the Company register under the
Securities  Act such Common  Shares  issued or the Common  Shares for which such
warrants  or options  may be  exercised  or such  convertible,  exchangeable  or
exercisable  securities  may be  converted,  exercised  or  exchanged,  then the
Conversion  Ratio  shall  be  reduced  to equal  the  lowest  of any such  lower
percentages.

     SECTION 3.7 Optional Redemption Under Certain Circumstances. If, for two or
more Trading Days in any five-Trading  Day period (whether or not  consecutive),
the Market  Price per Common Share is less than $1.50,  then the  Company,  upon
notice  delivered  to the Holder as  provided  in Section  3.8,  may redeem this
Debenture (but only with respect to such principal amount as to which the Holder
has not  theretofore  furnished a Conversion  Notice),  at 125% of the principal
amount  thereof,  together with all accrued and unpaid  interest  thereon to the
date of redemption (the  "Redemption  Date") which shall be no later than thirty
(30) days following the expiration of such  five-Trading  Day period.  Except as
set forth in this Section 3.7, the Company shall not have the right to prepay or
redeem this Debenture.

                                       10

<PAGE>

     SECTION 3.8 Notice of Redemption. Notice of optional redemption pursuant to
Section  3.7 shall be  provided  by the  Company to the  Holder in  writing  (by
registered mail or overnight  courier at the Holder's last address  appearing in
the Company's security registry) not less than seven nor more than 15 days prior
to the Redemption Date, which notice shall specify the Redemption Date and refer
to Section 3.7  (including a statement of the Market Price per Common Share) and
this Section 3.8.

     SECTION 3.9 Surrender of Debentures.  Upon any redemption of this Debenture
pursuant to Section 3.7, the Holder shall either  deliver this Debenture by hand
to the Company at its principal  executive  offices or surrender the same to the
Company at such  address by express  courier.  Payment of the  redemption  price
specified  in Section  3.7 shall be made by the  Company  to the Holder  against
receipt of this  Debenture (as provided in this Section 3.9) by wire transfer of
immediately  available  funds to such  account(s) as the Holder shall specify to
the  Company.  If  payment of such  redemption  price is not made in full by the
Redemption Date, the Holder shall again have the right to convert this Debenture
as provided in Article 3 hereof.


                                    ARTICLE 4
                        STATUS; RESTRICTIONS ON TRANSFER

     SECTION 4.1 Status of Debenture. This Debenture is a general, unsecured and
unconditional  obligation of the Company,  and  constitutes  a legal,  valid and
binding  obligation of the Company,  enforceable  in  accordance  with its terms
subject, as to enforceability, to general principles of equity and to principles
of  bankruptcy,  insolvency,  reorganization  and other  similar laws of general
applicability relating to or affecting creditors' rights and remedies generally.

     SECTION 4.2 Restrictions on Transfer. This Debenture, and any Common Shares
issuable  according  to the terms  hereof,  have not been  registered  under the
Securities  Act. This Debenture and any Common Shares issued upon conversion may
not be offered or sold, directly or indirectly,  except pursuant to an effective
registration  statement  under the Act, or pursuant  to an  available  exemption
therefrom.


                                       11

<PAGE>
                                    ARTICLE 5
                                    COVENANTS

     The Company  covenants and agrees that so long as this  Debenture  shall be
outstanding:

     SECTION 5.1 Conversion. The Company shall not later than five Business Days
after its receipt of the Conversion Notice,  issue and deliver to the Holder the
requisite  shares of common stock  issuable  upon  conversion,  according to the
terms hereof.

     SECTION  5.2  Notice of  Default.  If any one or more  events  occur  which
constitute or which,  with notice,  lapse of time, or both,  would constitute an
Event of Default, or if the Holder shall demand the issuance of Common Shares or
take any  other  action  permitted  upon  the  occurrence  of any such  Event of
Default,  the Company shall forthwith give notice to the Holder,  specifying the
nature and status of the Event of  Default or other  event or of such  demand or
action, as the case may be.

     SECTION 5.3  Insurance.  The Company shall carry and maintain in full force
and effect at all times with insurers that are  financially  sound and reputable
such insurance in such amounts as is customary in the  respective  industries of
the Company and such subsidiaries.

     SECTION  5.4  Payment of  Obligations.  Prior to  conversion  of the entire
principal amount of this Debenture,  the Company shall pay, extend, or discharge
at or before maturity,  all its respective material obligations and liabilities,
including,  without  limitation,  tax liabilities,  except where the same may be
contested in good faith by appropriate proceedings.

     SECTION  5.5  Compliance  with Laws.  The  Company  shall  comply  with all
applicable   laws,   ordinances,   rules,   regulations,   and  requirements  of
governmental authorities.

     SECTION 5.6  Inspection of Property,  Books and Records.  The Company shall
keep proper books of record and account in which full,  true and correct entries
shall be made of all dealings and  transactions  in relation to its business and
activities  and shall  permit  representatives  of the  Holder  at the  Holder's
expense to visit and inspect any of its  respective  properties,  to examine and
make abstracts  from any of its respective  books and records and to discuss its
respective  affairs,   finances  and  accounts  with  its  respective  officers,
employees and independent public  accountants,  all at such reasonable times and
as often as may reasonably be desired.


                                       12

<PAGE>
                                    ARTICLE 6
                                    REMEDIES

     SECTION 6.1 Events of  Default.  "Event of  Default"  wherever  used herein
means any one of the following events:

          (a) the  Company  shall  default  in the  payment of  principal  of or
interest on this Debenture as and when the same shall be due and payable and, in
the case of an interest  payment  default,  such default shall continue for five
Business Days after the date such interest payment was due, or the Company shall
fail to perform or  observe  any other  covenant,  agreement,  term,  provision,
undertaking  or  commitment  under  this  Debenture,   the  Securities  Purchase
Agreement or the  Registration  Rights Agreement and such default shall continue
for a period of five  Business Days after the delivery to the Company of written
notice that the Company is in default hereunder; or

          (b) any of the  representations  or  warranties  made  by the  Company
herein, the Securities Purchase Agreement,  the Registration Rights Agreement or
in any  certificate  or  financial or other  written  statements  heretofore  or
hereafter  furnished  by or on  behalf of the  Company  in  connection  with the
execution and delivery of this Debenture,  the Securities  Purchase Agreement or
the  Registration  Rights Agreement shall be false or misleading in any material
respect on the Closing Date; or

          (c) the entry of a decree or order by a court having  jurisdiction  in
the premises adjudging the Company or any subsidiary a bankrupt or insolvent, or
approving  as properly  filed a petition  seeking  reorganization,  arrangement,
adjustment  or  composition  of or in  respect of the  Company  under the United
States Bankruptcy Code of 1978, as amended (the "Bankruptcy Code"), or any other
applicable Federal or state law, or appointing a receiver, liquidator, assignee,
trustee or  sequestrator  (or other  similar  official) of the Company or of any
substantial  part of its property,  or ordering the winding-up or liquidation of
its  affairs,  and any such decree or order  continues  and is  unstayed  and in
effect for a period of 60 calendar days; or

          (d) the institution by the Company or any Subsidiary of proceedings to
be adjudicated a bankrupt or insolvent,  or the consent by it to the institution
of  bankruptcy or  insolvency  proceedings  against it, or the filing by it of a
petition  or answer  or  consent  seeking  reorganization  or  relief  under the
Bankruptcy Code or any other applicable  federal or state law, or the consent by
it to the  filing of any such  petition  or to the  appointment  of a  receiver,
liquidator, assignee, trustee or sequestrator (or other similar official) of the
Company or of any  substantial  part of its property,  or the making by it of an

                                       13

<PAGE>

assignment  for the benefit of  creditors,  or the admission by it in writing of
its  inability  to pay its debts  generally  as and when they become due, or the
taking of corporate action by the Company in furtherance of any such action; or

          (e) a final judgment or final judgments for the payment of money shall
have been entered by any court or courts of competent  jurisdiction  against the
Company and remains  undischarged  for a period (during which execution shall be
effectively  stayed) of 30 days,  provided that the aggregate amount of all such
judgments  at any time  outstanding  (to the extent  not paid or to be paid,  as
evidenced by a written communication to that effect from the applicable insurer,
by insurance) exceeds $100,000; or

          (f) it becomes  unlawful for the Company to perform or comply with its
obligations  under this  Debenture,  the  Securities  Purchase  Agreement or the
Registration Rights Agreement; or

          (g) the  Common  Shares  shall  be  delisted  from  the  NASDAQ  Small
Capitalization Market System or suspended from trading thereon, and shall not be
reinstated,  relisted or such suspension lifted, as the case may be, within five
(5) days; or

          (h) the Company shall default  (giving effect to any applicable  grace
period)  in the  payment of  principal  or  interest  as and when the same shall
become  due  and  payable,  under  any  indebtedness,  individually  or  in  the
aggregate, of more than $100,000.

     SECTION 6.2 Acceleration of Maturity; Rescission and Annulment. If an Event
of Default occurs and is continuing,  then and in every such case any Holder may
rescind the  Conversion  Notice and obtain  payment  for the entire  outstanding
principal  amount of the  Debenture  which remains  unconverted,  by a notice in
writing to the  Company,  and upon any such  declaration  the  entire  principal
amount of this Debenture  shall become  immediately due and payable by virtue of
such  rescission;  provided,  however,  in the  case  of any  Event  of  Default
described  in  paragraphs  (c),  (d) or (f) above,  the entire then  outstanding
principal  amount  of this  Debenture,  together  with all  accrued  and  unpaid
interest thereon, automatically shall become immediately due and payable without
the necessity of any notice or declaration as aforesaid.

     SECTION 6.3 Default  Interest  Rate. (a) If any portion of the principal of
or interest on the  Debenture  shall not be paid when due (whether at the stated
maturity, by acceleration or otherwise) such principal of and interest on the

                                       14

<PAGE>

Debenture  which is due and  owing  but not paid  shall,  without  limiting  the
Holder's rights under this Debenture, bear interest at the Default Interest Rate
until paid in full.

          (b)  Notwithstanding  anything herein to the contrary,  if at any time
the  applicable  interest  rate as provided  for herein shall exceed the maximum
lawful  rate which may be  contracted  for,  charged,  taken or  received by the
Lender in accordance with applicable laws of the State of Colorado (the "Maximum
Rate"), the rate of interest applicable to the Debenture shall be limited to the
Maximum Rate.

     SECTION 6.4 Remedies Not Waived.  No course of dealing  between the Company
and the Holder or any delay in exercising any rights  hereunder shall operate as
a waiver by the Holder.

     SECTION  6.5  Waiver.  No  recourse  shall  be had for the  payment  of the
principal of, or the interest on, this Debenture, or for any claim based hereon,
or otherwise in respect hereof, against any incorporator,  shareholder,  officer
or director,  as such, past,  present or future, of the Company or any successor
corporation,  whether by virtue of any constitution,  statute or rule of law, or
by the enforcement of any assessment or penalty or otherwise, all such liability
being, by the acceptance  hereof and as part of the  consideration for the issue
hereof, expressly waived and released.

                                    ARTICLE 7
                                  MISCELLANEOUS

     SECTION 7.1 Notice of Certain Events.  In the case of the occurrence of any
event described in Sections 3.1, 3.5 or 3.6 of this Debenture, the Company shall
cause to be mailed to the  Holder of this  Debenture  at its last  address as it
appears  in the  Company's  security  registry,  at least  20 days  prior to the
applicable record,  effective or expiration date hereinafter specified, a notice
stating  (x) the date on which a record is to be taken for the  purpose  of such
dividend, distribution,  issuance or granting of rights, options or warrants, or
if a record is not to be taken,  the date as of which the  holders  of record of
Common Stock to be entitled to such dividend, distribution, issuance or granting
of rights,  options or warrants  are to be  determined  or (y) the date on which
such  reclassification,  consolidation,  merger,  sale,  transfer,  dissolution,
liquidation  or winding-up is expected to become  effective,  and the date as of
which it is expected  that holders of record of Common Stock will be entitled to
exchange their shares for securities,  cash or other property  deliverable  upon
such  reclassification,   consolidation,  merger,  sale  transfer,  dissolution,
liquidation or winding-up.

                                       15

<PAGE>

     SECTION 7.2 Register.  (a) The Company shall keep at its principal office a
register  in which  the  Company  shall  provide  for the  registration  of this
Debenture.  Upon any transfer of this Debenture in accordance with Article 2 and
4 hereof, the Company shall register such transfer on the Debenture register.

          (b) The Company may deem the person in whose name this Debenture shall
be registered upon the registry books of the Company to be, and may treat it as,
the absolute  owner of this Debenture  (whether or not this  Debenture  shall be
overdue)  for the purpose of  receiving  payment of interest on or  principal of
this Debenture, for the conversion of this Debenture and for all other purposes,
and the Company  shall not be affected by any notice to the  contrary.  All such
payments  and such  conversions  shall be valid and  effective  to  satisfy  and
discharge the liability  upon this Debenture to the extent of the sum or sums so
paid or the conversion or conversions so made.

     SECTION 7.3  Withholding.  To the extent  required by  applicable  law, the
Company may withhold amounts for or on account of any taxes imposed or levied by
or on behalf of any taxing  authority in the United States  having  jurisdiction
over the Company from any payments made pursuant to this Debenture.

     SECTION  7.4  Governing  Law.  THIS  DEBENTURE  SHALL BE  GOVERNED  BY, AND
CONSTRUED IN ACCORDANCE  WITH, THE LAWS OF THE STATE OF NEW YORK (WITHOUT GIVING
EFFECT TO CONFLICTS  OF LAWS  PRINCIPLES).  WITH RESPECT TO ANY SUIT,  ACTION OR
PROCEEDINGS  RELATING TO THIS DEBENTURE,  THE COMPANY IRREVOCABLY SUBMITS TO THE
EXCLUSIVE  JURISDICTION  OF THE  COURTS OF THE STATE OF NEW YORK AND THE  UNITED
STATES  DISTRICT  COURT  LOCATED IN THE BOROUGH OF  MANHATTAN IN THE CITY OF NEW
YORK AND HEREBY WAIVES,  TO THE FULLEST EXTENT  PERMITTED BY APPLICABLE LAW, ANY
CLAIM  THAT  ANY  SUCH  SUIT,  ACTION  OR  PROCEEDING  HAS  BEEN  BROUGHT  IN AN
INCONVENIENT  FORUM.  SUBJECT TO APPLICABLE  LAW, THE COMPANY  AGREES THAT FINAL
JUDGMENT AGAINST IT IN ANY LEGAL ACTION OR PROCEEDING ARISING OUT OF OR RELATING
TO  THIS  DEBENTURE  SHALL  BE  CONCLUSIVE  AND  MAY BE  ENFORCED  IN ANY  OTHER
JURISDICTION  WITHIN OR OUTSIDE  THE UNITED  STATES BY SUIT ON THE  JUDGMENT,  A
CERTIFIED COPY OF WHICH JUDGMENT  SHALL BE CONCLUSIVE  EVIDENCE  THEREOF AND THE
AMOUNT OF ITS INDEBTEDNESS, OR BY SUCH OTHER MEANS PROVIDED BY LAW.


                                       16

<PAGE>

     SECTION 7.5  Headings.  The  headings of the  Articles and Sections of this
Debenture are inserted for convenience only and do not constitute a part of this
Debenture.


                                       17

<PAGE>

     IN WITNESS  WHEREOF,  the Company has caused this Debenture to be signed by
its duly  authorized  officer  under its  corporate  seal,  attested by its duly
authorized officer, on the date of this Debenture.

                                      EARTH SCIENCES, INC.



                                       By:
                                           ------------------------------------
                                           Name: Mark H. McKinnies
                                            Title: President


                                      Attest


                                       By:
                                          -------------------------------------
                                               Name:  Duane N. Bloom
                                               Title:  Secretary



INITIAL
HOLDER







By:
    --------------------------
Name:
Title:

                                       18

<PAGE>



                                                                         ANNEX I




                           [FORM OF CONVERSION NOTICE]


TO:      Earth Sciences, Inc.
         910 12th Street
         Golden, Colorado 80101
         Attention:
                   -------------------------

     The undersigned  owner of this 4% Convertible  Debenture due March 31, 1999
issued by Earth Sciences,  Inc. (the "Debenture")  hereby irrevocably  exercises
its option to convert $  principal  amount of the  Debenture  into shares of the
common stock,  $.01 par value,  of Earth Sciences,  Inc.  ("Common  Stock"),  in
accordance with the terms of the Debenture. The undersigned hereby instructs the
Company to convert the portion of the Debenture  specified  above into Shares of
Common Stock Issued at Conversion in accordance with the provisions of Article 3
of the  Debenture.  The  undersigned  directs that the Common Stock issuable and
certificates therefor deliverable upon conversion,  the Debenture recertificated
in the principal amount,  if any, not being  surrendered for conversion  hereby,
together with any check in payment for fractional Common Stock, be issued in the
name of and  delivered  to the  undersigned  unless  a  different  name has been
indicated  below.  All  capitalized  terms used and not defined  herein have the
respective meanings assigned to them in the Debenture.


Dated:
       --------------------------------------

                                                 Signature
- ----------------------------------------------


                     Fill in for registration of Debenture:


Please print name and address
(including zip code number) :


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

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

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





                                       19


                                                                   Exhibit 10.5

                          CERRO GORDO LETTER AGREEMENT

This letter agreement dated as of the 1st day of September, 1996 is made between
Earth Sciences, Inc. ("ESI"), a Colorado corporation and Martin Trost Associates
("MTA") a Colorado  joint venture  consisting of Mine  Development & Engineering
Corp. ("MDEC"), a California corporation and MTAARI, Inc. ("MTAARI"), a Colorado
corporation.  The  principals of MDEC and MTAARI are Bill Martin and Paul Trost,
respectively.

                                    RECITALS
MTA has leased certain  patented and  unpatented  mining claims near Cerro Gordo
peak in Inyo county,  California from Ms. Jody Stewart and the Montgomery  Moyer
Trust (the "Mining  Claims"),  under lease  agreements dated August 29, 1995 and
April 1, 1996,  respectively (the "Leases").  MTA has provided true and complete
copies of the Leases to ESI.

ESI and MTA desire, initially through an additional joint venture formed by them
(the "JV"),  to further  explore,  develop and place into  production the Mining
Claims.  ESI will  generally  arrange  for funds for  continuance  of the Lease,
preservation of the Mining Claims and other JV activities.  ESI's obligation for
expenditures  may earn ESI a working  interest in the Lease,  as outlined below.
MTA will  contribute  the Lease to the JV and, as approved by the JV,  agrees to
act as the operator for JV activities.  Both ESI and MTA will look solely to the
profits from future  production from the Mining Claims or proceeds from the sale
of JV assets to recover their respective investments in the JV. Both ESI and MTA
will only charge the JV on a cost basis for  activities  performed  on behalf of
the JV

                                    AGREEMENT
1.  DUTIES AND OBLIGATIONS OF THE PARTIES
ESI,  at its sole cost and  expense,  will  arrange  for up to $4.2  million  to
explore the Mining Claims and place the 'H' area into  profitable  production to
earn an 80%  working  interest in the Mining  Claims and  Leases.  Preproduction
exploration  has been  estimated by MTA at $650,000.  MTA will provide access to
all of the technical data it has in its possession  and/or  available to it, and
will provide assistance in JV activities as directed by the JV.

2.  FUNDING
Based on budgets  and  schedules  approved by the JV, ESI will fund the costs of
all JV  activities  up to the  agreed  amount  of $4.2  million  or until the JV
achieves cash flow, whichever occurs first.  Nevertheless,  ESI may, in its sole
discretion after a 30 day written notice to MTA, cease funding the activities of
the JV without  any future  obligation  except  for its  portion of the  working
interest  in the Leases and Mining  Claims it may have earned as a result of its
expenditures.  In accounting for the expenditures of ESI,  reasonable  salaries,
wages,  overhead and out-of-  pocket costs on a no profit basis of ESI personnel
engaged in JV activities shall be included.  The value of MTA's  contribution to
the JV as of the date of this  Agreement  is agreed to by the  parties  to equal
$92,000.

3.  ADDITIONAL FUNDING REQUIREMENTS
In the event that the funding  obligation of ESI is insufficient to achieve cash
flow  from  production,  the JV will  first  seek  third  party  debt or  equity
financing.  Failing such third party financing, ESI and MTA shall contribute the
funds required by the JV in proportion to their  respective  working interest at
the beginning of the calendar quarter in which funds are required.  In the event
that a party is either  unable or unwilling to  contribute  their  proportionate
share, the other party may make such contribution  diluting the working interest
of the non-contributing  party in proportion to the new expenditure required and
the total project expenditures.

4.  PURCHASE OF THE ROYALTY
At least one of the Leases  provides  the option to  purchase a royalty  granted
therein.  If,  outside the JV, either party were to exercise any such option the
other party shall have the right for a 2 year period to pay the purchasing party
their proportionate  amount of the purchase price plus interest at prime plus 2%
so that the royalty becomes owned by the JV.

5.  TIME SCHEDULE
Time is of the  essence  and both ESI and MTA  agree  to  carryout  all of their
respective duties and obligations under this Agreement in a timely fashion.  The
management  committee of the JV will establish a tentative  schedule of foreseen
near term activities as soon as practical.


                                       


<PAGE>

6.  FORMATION OF THE JV
ESI and MTA  agree to form a JV to  manage  and  control  the  joint  activities
intended under this Agreement. The JV shall not carry on its activities in a way
that it could be construed to be a  partnership  for U.S. tax purposes  and, ESI
and MTA agree to take all  reasonable  step to avoid such  classification.  With
regard to the recognition of tax attributes, any assets acquired by the JV shall
be jointly owned in proportion to the working interest of the parties at the end
of the calendar year in question.

7.  JV MANAGEMENT COMMITTEE
All the affairs of the JV shall be directed by a management committee (the "MC")
consisting  of 3 members  from ESI and 2 members  from MTA.  Decisions of the MC
will be on a  consensus  basis.  If a consensus  cannot be reached,  the MC will
proceed as provided below in the mediation section below.

8.  MTA AS OPERATOR
MTA will  serve as the  operator  for the JV.  The  continuation  of MTA in that
capacity  shall be subject to the  review  and  approval  of the MC from time to
time.  In such  capacity,  MTA has advised  that it will  charge  overhead on JV
expenditures which it manages as follows: 5% on 3rd party contractors, 7 1/2% on
purchases of materials and  supplies,  and 10% on other  expenditures.  MTA will
rent  equipment  it owns to the JV at blue book  rates less 10%.  Such  overhead
charges are to  represent an  estimation  of actual cost and are not intended to
include any significant  element of profit or loss.  Such overhead  charges will
compensate  MTA  for  the  cost  of  incidental   management  salaries,   office
facilities,  telephone,  and  other  items  commonly  included  in  general  and
administrative  expenses. As operator,  MTA will submit budgets and schedules to
the MC which shall  include their  overhead  charges for approval of the MC. MTA
and ESI management  personnel shall be reimbursed by the JV for their direct and
indirect costs without any additions.

9.  DISTRIBUTION OF PROFITS AND PROCEEDS
The   distribution   of  net  profits  and  any  net  proceeds   shall  be  made
proportionately to ESI and MTA until they have recovered their investment plus a
factor  for the cost of money  equal to the prime  interest  rate plus 2% if the
funds have been borrowed or the interest  income lost if funds come from amounts
on hand.  Thereafter,  ESI and MTA shall  share in the  distribution  of any net
profits and/or net proceeds on an 80/20 basis

10.  EARN-IN
As a  result  of its  expenditures  under  this  Agreement,  ESI  shall  earn an
undivided  interest  in the  Leases,  any  equipment  owned by the JV and Mining
Claims pursuant to the following schedule:

         Expenditure Level                                    Interest Earned
         -----------------                                    ---------------
         $  0         -  $  149,999                                 0%
         $  150,000   -  $  499,999                                10%
         $  500,000   -  $  999,999                                25%
         $1,000,000   - $1,999,999                               37.5%
         $2,000,000   - $4,199,999                                 50%
         $4,200,000                                                80%

MTA agrees to evidences such earned interest by a recordable assignment to ESI.

11.  MEDIATION
In the event the MC cannot  reach  consensus  on any issue it shall  become  the
subject  of  mediation  under  the  following  guidelines:  (1) ESI and MTA will
jointly select an unrelated third party familiar with the mining  industry,  (2)
with the aid of the third party ESI and MTA will reach a consensus  on a further
course of action.

12.  RIGHT TO ENCUMBER LEASES
ESI is granted  the right to encumber  the  Leases,  subject to the terms of the
underlying Leases, solely for the arrangement of financing its obligation for JV
activities.  ESI is responsible for repaying any such financing out of its share
of the JV cash flow.

                                       2

<PAGE>


13.  AREA OF INFLUENCE
The parties  agree to an area of  influence  of 5 miles from the location of the
Mining Claims in which all property or data already  acquired or acquired in the
future by either party will  immediately be disclosed to and become the property
of the JV. The  restriction  imposed by this  section  shall apply for two years
after the termination of the JV.

14.  TERMINATION
Either  party may  terminate  the JV at any time by  providing  30 days  written
notice to the JV, by paying for all JV  commitments  that were incurred prior to
the date of termination, and by assigning all of its right title and interest to
the Leases and Mining Claims to the other party.  In any event,  ESI and MTA can
mutually  agree  to  terminate  the JV at any  time.  In no case  will an act of
termination  relieve a party from liability for acts of the JV during the period
of that party's involvement.

15.  AGREEMENT TO FURTHER DEFINE UNDERSTANDINGS OF ESI AND MTA
The  parties  agree  that at a  mutually  agreeable  future  date that they will
negotiate  in good  faith to  further  define  and  formalize  the  relationship
outlined herein.

                                   SIGNATURES
In witness of the mutual  covenants and agreements made herein,  ESI, and MTA by
its principals, set their hands and seals as of the day first written above.

Earth Sciences, Inc.                       Martin Trost Associates


/s/ Mark H. McKinnies                     /s/ Bill Martin
- -----------------------------------       -------------------------------------
by Mark H. McKinnies, its President       by Bill Martin




                                          /s/ Paul Trost
                                          -------------------------------------
                                          by Paul Trost


                                       3



 
                                                                   Exhibit 10.6

                                OPTION AGREEMENT

This Option  Agreement,  dated as of January 20, 1997, is among Earth  Sciences,
Inc. ("ESI"), ESI Resources Limited, an Alberta corporation,  and Earth Sciences
Extraction Company, an Alberta limited partnership  (collectively referred to as
the "ESI Group") on the one hand and Yankee Atomic Electric  Company and Vermont
Yankee Nuclear Power  Corporation (such latter two companies are herein referred
to as "Yankee") on the other.

WHEREAS,  the parties hereto have previously entered into a Production  Purchase
Agreement  dated August 4, 1978,  which such agreement has been amended on three
occasions (the "PPA");

WHEREAS,  the  parties are  willing,  under the terms and  conditions  set forth
herein, to terminate the PPA and all related liens and mortgages;

NOW,  THEREFORE,  in  consideration of the mutual covenants set forth herein and
other  good  and  valuable  consideration,   the  receipt  of  which  is  hereby
acknowledged by each of the parties, the parties hereto hereby agree as follows:

Section 1. Payment for Option. ESI will,  simultaneously  with the execution and
delivery of this Agreement, wire transfer U.S. $100,000 in immediately available
federal funds to Yankee's bank account at Bank of New York, One Wall Street, New
York, New York (ABA  #021-000-018).  Such payment amount shall be  nonrefundable
and shall constitute consideration for the option granted in Section 2 below.

Section  2.  Option.  Yankee  hereby  grants  ESI on behalf of the ESI Group the
option,  exercisable on or before the close of business in Denver on October 20,
1997,  to terminate  the PPA without  further  liability to any party thereto by
delivering  to Yankee (i) the sum of U.S.  $1,150,000 in  immediately  available
federal funds and (ii) an  assignment,  executed by the ESI Group,  of a 10% net
profits interest in the form attached hereto as Exhibit A. If ESI exercises such
option,  then Yankee will  forthwith  take all steps  necessary  or desirable to
release all liens, mortgages and other encumbrances it may have which burden any
asset of the ESI  Group,  such  releases  to be in the form  attached  hereto as
Exhibit B.

Section  3.  The ESI  Group's  Representations  and  Warranties.  The ESI  Group
represents and warrants:

(a)  Organization,  Good Standing Related Matters.  Each member of the ESI Group
has been duly  incorporated  or formed and is validly  existing in good standing
under the laws of its state or  province  of  formation.  Each member of the ESI
Group is duly qualified to do business in any other  jurisdictions in which such
qualification  is required  except where  failure to so qualify would not have a
material adverse effect on the ESI Group or its business. Each member of the ESI
Group has all requisite  power and authority to own its  properties  and conduct
its business as presently being conducted.

(b) Authorization. The execution, delivery and performance by each member of the
ESI Group of this Agreement has been duly authorized by all necessary  corporate
action.

(c) Binding  Obligation.  This Agreement has been duly executed and delivered by
each  member  of the ESI  Group  and  constitutes  a legal,  valid  and  binding
obligation of each member of the ESI Group,  enforceable in accordance  with its
terms except as limited by bankruptcy, insolvency, moratorium, and other laws of
general  application  affecting  the  enforcement  of  creditors'  rights and by
general principles of equity.

(d) No  Conflicts.  The  execution  and  delivery  of  this  Agreement  and  the
consummation of the transactions  contemplated herein will not (i) conflict with
or result in a breach  of any of the  terms,  provisions  or  conditions  of any
material contract,  note, lease,  agreement or other instrument or obligation to
which any  member of the ESI Group is a party or (ii)  violate  any law,  order,
judgment, rule or regulation applicable to any member of the ESI Group.


                                       


<PAGE>


(e) Approvals and Consents. No approval, consent or authorization of any natural
person, firm,  corporation,  court or federal, state or provincial  governmental
authority is necessary  for the  execution or delivery of this  Agreement or for
the performance by any member of the ESI Group of any of the terms or conditions
hereof.

(f) Litigation.  There is no action, proceeding, or investigation pending or, to
the best knowledge of any member of the ESI Group, threatened against any member
of the ESI Group before any court or administrative  agency, nor any writ, order
or judgment of any court or administrative  agency,  that questions the validity
of this Agreement or the right of any member of the ESI Group to enter into such
agreement,  or to consummate the transaction  contemplated hereby or thereby, or
that  might  result  in the  aggregate  in any  material  adverse  change in the
business, prospects,  condition,  affairs, operations,  properties, or assets of
the ESI Group or in any material liability on the part of the ESI Group.

(g)  Compliance  with  Law.  Each  member of the ESI  Group,  to the best of its
knowledge after reasonable  investigation,  is in compliance with all applicable
statutes, laws, regulations and executive orders of the United States of America
and all states,  foreign countries,  and other governmental  bodies and agencies
having  jurisdiction  over its business or properties,  and no member of the ESI
Group has received  notice of any material  violation  of such  statutes,  laws,
regulations or orders which has not been remedied prior to the date hereof.

(h) Agreements, Contracts. No member of the ESI Group has breached, nor does any
member  of the ESI Group  have  knowledge  of any  claim or  threat  that it has
breached,  any of the terms or conditions of any material  agreement,  contract,
lease,  license,  instrument  or commitment  that in the aggregate  could have a
material  adverse  effect on the business,  properties,  financial  condition or
results of operations of the ESI Group. The execution,  delivery and performance
of and compliance with this Agreement,  have not resulted and will not result in
any  violation  of, or conflict  with,  or constitute a default under any of the
foregoing, or result in the creation of any mortgage,  pledge, lien, encumbrance
or charge upon any of the  properties  or assets of any member of the ESI Group.
To the  knowledge  of each  member  of the ESI  Group,  no  party  to any of its
material contracts is in material default of any such contract.

Section 4.  Yankee's  Representations  and  Warranties.  Yankee  represents  and
warrants:

(a)  Organization,  Good  Standing  and  Related  Matters . Yankee has been duly
incorporated and is validly existing as a corporation in good standing under the
laws of its state of  formation.  Yankee is duly  qualified  to do business as a
foreign  corporation in any other  jurisdictions in which such  qualification is
required  except where failure to so qualify  would not have a material  adverse
effect on Yankee or its business.  Yankee has all requisite  power and authority
to own its properties and conduct its business as presently being conducted.

(b)  Authorization.  The execution,  delivery and  performance by Yankee of this
Agreement has been duly authorized by all necessary action.

(c) Binding  Obligation.  This Agreement has been duly executed and delivered by
Yankee  and  constitutes  a legal,  valid  and  binding  obligation  of  Yankee,
enforceable  in  accordance  with its terms  except as  limited  by  bankruptcy,
insolvency,  moratorium,  and other laws of general  application  affecting  the
enforcement of creditors' rights and by general principles of equity.

(d) No  Conflicts.  The  execution  and  delivery  of  this  Agreement  and  the
consummation of the transactions  contemplated herein will not (i) conflict with
or result in a breach  of any of the  terms,  provisions  or  conditions  of any
material contract,  note, lease,  agreement or other instrument or obligation to
which  Yankee  is a party or (ii)  violate  any law,  order,  judgment,  rule or
regulation applicable to Yankee.

                                       2

<PAGE>
                                       

(e) Approvals and Consents. No approval, consent or authorization of any natural
person, firm,  corporation,  court or federal or state governmental authority is
necessary for the execution-or delivery of this Agreement or for the performance
by Yankee of any of the terms or conditions hereof.

(f) Litigation.  There is no action, proceeding, or investigation pending or, to
the best  knowledge of Yankee,  threatened  against  Yankee  before any court or
administrative  agency,  nor  any  writ,  order  or  judgment  of any  court  or
administrative  agency,  that  questions  the validity of this  Agreement or the
right of Yankee to enter into such  agreement,  or to consummate the transaction
contemplated  hereby or thereby,  or that might  result in the  aggregate in any
material  adverse  change  in  the  business,  prospects,   condition,  affairs,
operations,  properties, or assets of Yankee or in any material liability on the
part of Yankee.  Yankee does not  currently  intend to initiate any legal action
against any other person or entity.

(g) Execution of Agreement,  et al. The execution,  delivery and  performance of
and compliance with this Agreement, have not resulted and will not result in any
violation  of, or conflict  with,  or  constitute  a default  under any material
agreement,  contract,  lease,  license,  instrument  or  commitment  that in the
aggregate  could have a material  adverse  effect on the  business,  properties,
financial  condition  or  results  of  operations  of  Yankee,  or result in the
creation of any mortgage,  pledge,  lien,  encumbrance or charge upon any of the
properties  or assets of Yankee.  To Yankee's  knowledge  no party to any of its
material contracts is in material default of any such contract.

Section 5. Miscellaneous.

(a) Waiver and Amendment.  Any term hereof may be amended, and the observance of
any term hereof may be waived (either generally or in a particular  instance and
either  retroactively  or  prospectively),  only with the written consent of the
parties hereto.

(b) Severability.  Whenever possible,  each provision of this Agreement shall be
interpreted in such manner as to be effective and valid, but if any provision of
this  Agreement  shall be held to be  prohibited by or invalid,  such  provision
shall be  ineffective  only to the  extent of such  prohibition  or  invalidity,
without invalidating the remainder of such provision or the remaining provisions
of this Agreement.

(c) Colorado Law  Applicable.  This Agreement shall be governed by and construed
under the laws of the State of Colorado  without  regard to its conflicts of law
rules.

(d)  Counterparts.  This Agreement may be executed in two or more  counterparts,
each of which  shall be  deemed an  original,  but all of which  together  shall
constitute one and the same instrument.

(e) Notices.  Any notice required under this Agreement shall be given in writing
and  shall  be  deemed  effectively  given  upon  personal  delivery  or sent by
facsimile  to the number  set forth  below to the party to be  notified  or upon
deposit with the United  States Post Office by  registered  or  certified  mail,
postage prepaid (or with an equivalent independent postal service) and addressed
to the party at the address set forth below or at such other facsimile number or
address as may be designated by a party by written notice to the other party:

To ESI Group:

c/o Earth Sciences, Inc.
910 12th Street
Golden, CO 80401
Tel. No. (303) 279-7641
Fax No. (303) 279-1180

To Yankee:

                                        3

<PAGE>


c/o Yankee Atomic Electric Company
580 Main Street
Bolton, Massachusetts 01740
Tel. No. (508) 779-6711
Fax No. (508) 568-3703

(f) No  Implied  Waiver.  Failure  to insist  upon  strict  compliance  with any
provision  hereof shall not be a waiver of such provision or any other provision
hereof.  Further, the waiver by either party hereto of a breach of any provision
hereof by the other party shall not be construed to waive any subsequent  breach
by such party.

(g)  Entire  Agreement.  This  Agreement  sets forth the  entire  agreement  and
understanding of the parties and supersedes all prior understandings, agreements
or  representations  by or between the parties,  whether  oral or written,  with
respect to the Option.

IN WITNESS  WHEREOF,  the parties  hereto have executed this Agreement as of the
day and year hereinabove first written.

Earth Sciences, Inc.

By /s/Mark H. McKinnies
   --------------------------
President

ESI Resources, Limited

By /s/Mark H. McKinnies
- -----------------------------
President

Earth Sciences Extraction Company
by ESI Resources Limited, general partner

By /s/Mark H. McKinnies
- -----------------------------
President

Yankee Atomic Electric Company

By /s/T. W. Bennet
- -----------------------------
Authorized Officer

Vermont Yankee Nuclear Power Corporation

By /s/Bruce W. Wiggett
- -----------------------------
Authorized Officer

                                        4
<PAGE>

EXHIBIT A

                            ASSIGNMENT OF NET PROFITS
                            -------------------------
                                    INTEREST
                                    --------

KNOW ALL MEN BY THESE PRESENTS, THAT:

THIS ASSIGNMENT,  dated as of the Effective Date as herein defined,  is executed
by Earth  Sciences,  Inc., a Colorado  corporation,  ESI Resources  Limited,  an
Alberta  corporation,  and Earth Sciences Extraction Company, an Alberta limited
partnership, whose mailing address is c/o Earth Sciences, Inc., 910 12th Street,
Golden, Colorado 80401 (collectively, the "Assignor"), to Yankee Atomic Electric
Company and Vermont Yankee  Nuclear Power  Corporation,  jointly,  whose mailing
addresses  are c/o Yankee  Atomic  Electric  Company,  580 Main Street,  Bolton,
Massachusetts 01740 (collectively, the "Assignee"). Capitalized terms shall have
the meaning set forth above and in Article VIII hereof.

                              ARTICLE I CONVEYANCE
                                        ----------

Assignor,  for and in consideration of the sum of One Hundred Dollars  ($100.00)
and other good and valuable  consideration in hand paid by Assignee to Assignor,
the receipt  and  sufficiency  of which are hereby  acknowledged,  has  GRANTED,
BARGAINED,  SOLD, CONVEYED,  ASSIGNED and DELIVERED,  and by these presents does
hereby  GRANT,  BARGAIN,  SELL,  CONVEY,  ASSIGN and  DELIVER,  the Net  Profits
Interest unto ASSIGNEE.

TO HAVE AND TO HOLD the Net Profits Interest, together with all and singular the
rights  and  appurtenances  thereunto,   subject,  however,  to  the  terms  and
provisions  of the Permitted  Agreements  and Burdens and this  Conveyance;  and
Assignor does by these  presents bind and obligate  itself,  its  successors and
assigns,  to WARRANT  and  FOREVER  DEFEND,  all and  singular  the Net  Profits
Interest unto the Assignee,  its  successors  and assigns,  against every person
whomsoever,  lawfully  claiming  or to claim the same or any part  thereof,  by,
through or under the Assignor, but not otherwise.

                         ARTICLE II RECORDS AND REPORTS
                                    -------------------

2 01.  Books and  Records.  The Assignor  shall at all times  maintain  true and
correct  books and records  sufficient  to determine  the Net Profits  Interest,
including,  but not limited to,  accounts to which Gross  Revenues and Costs and
Expenses are credited and charged and from which Net Income is determined.  Such
books and records shall be maintained in accordance with GAAP.

2.02.  Inspections.  The books and records  referred to in Section 2.01 shall be
open for inspection,  copying and audit at the offices of ESI Resources Limited,
3077 Shepard Place S.E., Calgary, Alberta T2H 2H4 during normal business hours.

2.03.  Annual  Statements.  Within ninety (90) days next  following the close of
each calendar year,  Assignor  shall deliver to the Assignee,  together with any
payment  due  under  Section  3.01  below,  a  detailed  statement  showing  the
computation  of  Net  Income  attributable  to  such  year,   accompanied  by  a
certificate  of the chief  financial  officer of ESI stating that such statement
has been  prepared in accordance  with this  Agreement and that such person does
not know of any  inaccuracy  therein.  The statement  will be  accompanied by an
audit report on Earth Science,  Inc.'s year end financial  statement prepared by
Earth Science, Inc.'s independent certified public accountants.

2.04.  Assignee's  Exceptions  to Annual  Statements.  If  Assignee  shall  take
exception  to any item or items  included in the annual  statements  rendered by
Assignor,  Assignee shall notify  Assignor in writing within two (2) years after
the  receipt of  thereof,  setting  forth in such  notice the  specific  charges
complained  of and to which  exception  is taken or the specific  credits  which
should  have been made and  allowed,  and with  respect to such  complaints  and
exceptions as are justified, adjustment shall be made. If Assignee shall fail to
give Assignor notice of such


                                       


<PAGE>

complaints and exceptions prior to the expiration of such two year period,  then
the statements as originally  rendered by Assignor shall be deemed to be correct
as rendered.

                               ARTICLE III PAYMENT
                                           -------

3.01.  Payment. On or before the last Business Day in the month of March in each
year  commencing in 1998,  Assignor  shall pay to Assignee  (except as otherwise
provided in Article  VII) an amount  equal to the Net Profits  Interest  for the
prior  calendar  year or pro rata part  thereof  less Net Profits  Taxes paid or
payable by  Assignor  and/or  its  Affiliates  or other  Person on behalf of the
Assignee.  Such payment shall be  accompanied  by the statement and  certificate
required under Section 2.03 hereof. All payments shall be in U.S. dollars.

3.02. Interest on Past Due Payments. Any amount not paid by Assignor to Assignee
when due shall  bear,  and  Assignor  will pay,  interest at the rate of 18% per
annum, but not in excess of the maximum amount allowed by law.

3.03. Overpayment. If at any time Assignor inadvertently pays Assignee more than
the amount due, Assignee shall not be obligated to return such overpayment,  but
the amount or amounts  otherwise  payable for any  subsequent  period or periods
shall be reduced by such overpayment, without interest.

                      ARTICLE IV NON-LIABILITY OF ASSIGNEE
                                 -------------------------

In no event shall Assignee be liable or responsible in any way for any Costs and
Expenses or other costs or liabilities  incurred by Assignor in connection  with
the Facility.

                         ARTICLE V OPERATION OF FACILITY
                                   ---------------------

5.01.  Prudency  Standard.  Assignor  agrees that it will conduct or cause to be
conducted,  the  development,  maintenance  and  operation of the Facility  with
reasonable and prudent business judgment and in accordance with good practices.

5.02. Abandonment of Facility.  Nothing herein contained shall obligate Assignor
to continue to maintain or attempt to maintain the Facility  when, in Assignor's
sole opinion, the Facility is incapable of producing a profit to the Assignor.

5.03. Insurance.  Assignor shall maintain, or cause to be maintained,  insurance
in such  amounts  and  covering  such risk as is usually  carried  by  companies
engaged in  similar  business  and  owning  similar  properties.  All  insurance
required by this Section 5.03 shall be maintained with responsible and reputable
insurance  companies  or  associations,  and may  contain  such  deductibles  as
Assignor deems appropriate.

                             ARTICLE VI ASSIGNMENTS
                                        -----------

6.01. Assignment by Assignor. Assignor shall not have the right to assign, sell,
transfer,  convey,  mortgage or pledge any interest in the Facility  unless made
expressly  subject to the Net Profits  Interest and the terms and  provisions of
this Conveyance.

6.02.  Assignment by Assignee.  Assignee has the right to assign the Net Profits
Interest in whole or in part. However, no such assignment will affect the method
of  computing  Net  Income,  and if more than one  Person  becomes  entitled  to
participate in the Net Profits Interest, Assignor may withhold the furnishing of
any information provided for in ARTICLE II from such other Person until Assignor
is  furnished a  recordable  instrument  executed by or binding upon all Persons
interested in the Net Profits Interest  designating one Person who is to receive
such information.

                                        2

<PAGE>


6.03. Change in Ownership. No change of ownership or right to receive payment of
the Net Profits Interest, or of any part thereof, however accomplished, shall be
binding upon  Assignor  until notice  thereof  shall have been  furnished by the
Person  claiming  the benefit  thereof,  and then only with  respect to payments
thereafter made.

Notice of sale or assignment  shall consist of a certified  copy of the recorded
instrument  accomplishing  the same;  notice of change of  ownership or right to
receive payment accomplished in any manner (for example by reason of incapacity,
death or dissolution)  shall consist of certified  copies of recorded  documents
and complete  proceedings  legally  binding and  conclusive of the rights of all
parties.  Until such  notice  shall have been  furnished  to  Assignor  as above
provided,  the payment or tender of all sums payable on the Net Profits Interest
may be made in the manner  provided  herein  precisely  as if no such  change in
interest ownership or right to receive payment has occurred.  The kind of notice
herein  provided  shall be  exclusive,  and no other  kind,  whether  actual  or
constructive, shall be binding on Assignor.

6.04. Rights of Mortgagee or Trustee.  If the Assignee shall at any time execute
a mortgage or deed of trust  covering  all or part of the Net Profits  Interest,
the  mortgagee(s)  or trustee(s)  therein named or the holder of any  obligation
secured  thereby shall be entitled,  to the extent the mortgage or deed of trust
so  provides,  to  exercise  all the  rights,  remedies,  powers and  privileges
conferred  upon the  Assignee  by the  terms of this  Conveyance  and to give or
withhold all consents required to be obtained hereunder by the Assignee, but the
provisions of this Section 6.04 shall in no way be deemed or construed to impose
upon the Assignor any  obligation or liability  undertaken by the Assignee under
such mortgage or deed of trust or under the obligation secured thereby.

                          ARTICLE VII REPURCHASE OPTION
                                      -----------------

Assignor shall have the option to repurchase  the Net Profits  Interest from the
Assignee or its successors  and assigns at any time prior to the  termination of
the Net Profits  Interest by paying the Assignee or its  successors  and assigns
the sum of (a)  $3,000,000  plus (b) an additional  $50,000 for each January 1st
following the date of this Conveyance. In addition,  Assignor shall pay Assignee
on March 30 of the calendar  year  following  the year in which this  repurchase
option is  exercised  an amount  equal to (a) the Net Profits for the  preceding
calendar year  multiplied by (b) a fraction  equal to the numeric  equivalent of
the month in which the repurchase option is exercised divided by 12.

Notwithstanding  anything in this Article to the  contrary,  the Assignor  shall
never be required  to pay  Assignee  and its  successors  and assigns  more than
$3,250,000 to repurchase the Net Profits Interest.

                            ARTICLE VIII DEFINITIONS
                                         -----------

The following  words,  terms or phrases have the following  meaning when used in
this Agreement:

"Affiliate"  means as to any Person,  any Person  controlling,  controlled by or
under  common  control  with such  Person,  with the  concept of control in such
context meaning the possession,  directly or indirectly,  of the power to direct
or cause the  direction  of the  management  and  policies of  another,  whether
through the ownership of voting securities, by contract or otherwise.

"Assignee"  means the  Assignee  while it owns an  interest  in the Net  Profits
Interest,  and any other Person or Persons who subsequently  acquire legal title
to-all or any portion of the Net Profits Interest.

"Assignor"  means the Assignor  while it owns all or part of the Facility  other
than a royalty or profits interest,  and any other Person or Persons who acquire
all or any part of the Facility other than a royalty or profits interest.

"Business  Day"  means any day which is not a  Saturday,  Sunday or other day in
which national banking  institutions in the City of Denver,  Colorado are closed
as authorized or required by law.

"Conveyance" means this Assignment of Net Profits Interest.

                                        3

<PAGE>


"Costs  and  Expenses"  means the sum of the  following  amounts  related to the
Facility  determined in accordance  with GAAP from and after the Effective  Date
(which  shall be counted  only once even though they may be covered by more than
one of the subparagraphs or clauses of this definition):


(1) all actual cash expenditures and reasonable  accruals by the Assignor or its
Affiliates in connection with the operation of the Facility, including by way of
example and not limitation, all costs for any materials, processing, production,
haulage,   storage,   rentals,   assessments,   testing,  selling,  general  and
administrative costs directly relating to the Facility,  supplies, materials and
maintenance,  all  payments  of any  kind  to  Western  Cooperative  Fertilizers
Limited,  all taxes directly related to the Facility or the production therefrom
except  income  taxes,  all costs of  employees  utilized  on or for the  direct
benefit of the  Facility  and  operations  thereof,  including  wages,  plans of
deferred compensation, other employee contributions, and all additional benefits
such as insurance,  retirement and services  calculated on a cost (no profit and
including  only those bonuses that are reasonable and customary in the industry)
basis to Assignor and/or its Affiliates, including appropriate overhead charges,
all  costs  of  professional  consultants,  accounting  and  legal  services  or
independent  contractors  insofar  as  they  relate  directly  to the  Facility;
insurance;  utilities,  including  power and water,  and all other  costs of the
Assignor and/or its Affiliates in connection with the preservation and operation
of the Facility;

(2) Production Taxes related to the Facility;

(3) any amounts paid or accrued by the Assignor and/or its  Affiliates,  whether
as refund,  interest or penalty,  to a  purchaser  because the amount  initially
received by the  Assignor  and/or its  Affiliates  as sales  price was more,  or
allegedly more, than permitted by the terms of any applicable contract, statute,
regulation, order, decree or other obligations related to the Facility; and

(4) amounts paid by the Assignor and/or its Affiliates on and in accordance with
any  Permitted  Agreements  and Burdens,  interest paid by the Assignor to third
parties  on   indebtedness   incurred  in  connection   with  the  Facility  and
depreciation and amortization at a rate no greater than a straight line basis of
or related to the Facility.

"Effective  Date" means 12:01  a.m.,  Calgary  time on the first day of the next
succeeding  month after  exercise by ESI of the option  described  in the Option
Agreement,  dated as of ______________ to which Earth Sciences,  Inc. and Yankee
are, among others, parties.

"Facility" means the Assignor's solvent extraction  facility located in Calgary,
Alberta, the legal description of which is as follows:
MERIDIAN 4 RANGE 29 TOWNSHIP 23
SECTION 16
THAT PORTION OF THE NORTHEAST QUARTER WHICH LIES TO THE SOUTH AND WEST OF THE
ROADWAY ON PLAN 5170EZ AND TO THE SOUTH AND EAST OF THE LAND COMPRISED WITHIN
6460AR CONTAINING 53.7 HECTARES (132.67 ACRES) MORE OR LESS EXCEPTING THE
STREET WIDENING ON PLAN 8311428 CONTAINING 0.164 HECTARES (0.41 ACRES) MORE
OR LESS EXCEPTING THEREOUT ALL MINES AND MINERALS; and PLAN 6460AR BLOCK "X"
AND BLOCK "Y" EXCEPTING OUT OF SAID BLOCK "Y" THE RIGHT OF WAY ON PLAN RW543
CONTAINING 0.526 HECTARES (1.30 ACRES) MORE OR LESS EXCEPTING THEREOUT ALL
MINES AND MINERALS AND THE RIGHT TO WORK THE SAME.

"GAAP" means generally accepted accounting principles.

                                        4

<PAGE>

"Gross Revenues" means the sum of the following amounts determined in accordance
with GAAP from and after the  Effective  Date (which items shall be counted only
once even  though they may be covered by more than one of the  subparagraphs  or
clauses of this definition):

(1) An  amount  equal to all  sales of  products  from the  Facility  after  the
Effective Date recognized under GAAP by the Assignor and/or its Affiliates;

(2) The income from all insurance less costs of collection, judgments and claims
(including   settlements  thereof),   recognized  by  the  Assignor  and/or  its
Affiliates involving the Facility to the extent such income is not actually used
or committed  for use in repairing,  rebuilding  or replacing any property,  the
loss, damage, taking or condemning of which gave rise to such judgment or claim;
and

(3) All other  monies and things of value  recognized  as income by the Assignor
and/or its  Affiliates by virtue of the  ownership of the Facility,  except that
the income from the sale by the Assignor  and/or its  Affiliates of any interest
in the  Facility  shall not be included in Gross  Revenues in the event that the
Assignor and/or its Affiliates should hereafter sell any part of its interest in
the Facility subject to the Net Profits Interest herein assigned.

"Net Income" for any period means the excess of Gross Revenues recognized during
such period over the Costs and Expenses recognized during such period.

"Net Loss " at any calendar year end date means an amount equal to the excess of
Costs and Expenses over Gross Revenues for such period.  Net Loss will not carry
forward or carry back.

"Net Profits Interest" means 10% of the Net Income.

"Net Profits  Taxes" means all windfall  profit taxes,  state  severance  taxes,
excise taxes, ad valorem taxes, income taxes and all other taxes or governmental
charges  which are  attributable  to the Net  Profits  Interest,  to Net  Income
derived  by the  Assignee  therefrom,  or to both and as to which  the  Assignor
and/or its Affiliates is required to withhold and pay over or otherwise  account
to any taxing authority.

"Non-Affiliate"  means,  as to the party  specified,  any  Person  who is not an
Affiliate of such party.

"Permitted Agreements and Burdens" means all agreements,
whenever  entered  into,  relating to the  borrowing  of monies for use at or in
connection  with the Facility;  and, if consented to by the Assignee,  all other
agreements entered into after the Effective Date.

"Person" means any individual, corporation,  partnership, trust, estate or other
entity or organization.

"Production  Taxes" means (a) all windfall profit taxes,  state,  provincial and
local severance taxes and all other taxes,  excluding  income taxes, and (b) all
ad  valorem  taxes and other  taxes,  excluding  income  taxes,  imposed  on the
Facility or Assignor and/or its Affiliates' interest therein.

                            ARTICLE IX MISCELLANEOUS
                                       -------------

9.01.  Term. This Conveyance shall remain in force and effect until the earliest
of (i) the tenth  anniversary  following the Effective Date; (ii) payment by the
Assignor of a total of $4,850,000 pursuant to the terms hereof or by prepayment;
or (iii) the date on which the repurchase option described herein is exercised.

9.02. Further  Assurances.  Should any additional  instruments of assignment and
conveyance  be required to describe  more  specifically  any  interests  subject
hereto,  Assignor and Assignor  agree to execute and deliver the same.  Also, if
any other or additional instruments are required in connection herewith in order
to comply with  applicable  laws or  regulations,  Assignor  and  Assignee  will
execute and deliver the same.

                                        5

<PAGE>


9.03. Notices. All notices, statements,  payments and communications between the
parties hereto shall be deemed to have been sufficiently  given and delivered if
enclosed  in a post paid  wrapper  and  deposited  in the  United  States  mails
directed,  or if personally  delivered or  telecopied,  to the party to whom the
same is  directed  or to be  furnished  or made at the  respective  address,  as
follows:

   ASSIGNOR:

         c/o Earth Sciences, Inc.
         910 12th Street
         Golden, CO 80401
         Tel. No. (303) 279-7641
         Fax No. (303) 279-1180

   ASSIGNEE:
         c/o Yankee Atomic Electric Company
         580 Main Street
         Bolton, Massachusetts 01740
         Tel. No. (508) 779-6711
         Fax No. (508) 568-3703

Either  party or the  successors  or  assignees  of the  interest  or  rights or
obligations of either party  hereunder may change its address or designate a new
or different  address or addresses for the purposes  hereof by a similar  notice
given or directed to all parties interested hereunder at the time.

9.04. Binding Effect. This Conveyance shall bind and inure to the benefit of the
successors and assigns of Assignor and Assignee.

9.05.  Governing Law. The validity,  effect and  construction of this Conveyance
shall be governed by the laws of Colorado.

9.06.  Headings.  Article and Section  headings used in this  Conveyance are for
convenience only and shall not affect the construction of this Conveyance.

9.07.  Substitution of Warranty.  This instrument is made with full substitution
and  subrogation  of  Assignee  in and to all  covenants  of  warranty by others
heretofore  given or made with  respect to the  Facility or any part  thereof or
interest therein.

9.08.  Counterpart  Execution.  This  Conveyance  is being  executed in multiple
original  counterparts,  all of which are identical.  Every  counterpart of this
Conveyance  shall be  deemed to be an  original  for all  purposes  and all such
counterparts together shall constitute one and the same Conveyance.

IN WITNESS  WHEREOF,  the parties have caused this  Conveyance to be executed in
their  respective  names and their  corporate  seals to be  affixed  hereto  and
attested by their proper signatory  officers thereunto  authorized,  in multiple
originals, as of the Effective Date.

Earth Sciences, Inc.

By_________________________
President

                                       6
                                       

<PAGE>

ESI Resources Limited

By________________________
   President

Earth Sciences Extraction Company
by ESI Resources Limited, general partner

By_________________________
President

Yankee Atomic Electric Company

By_________________________
   Authorized Officer

Vermont Yankee Nuclear Power Corporation

By__________________________
Authorized Officer

STATE OF COLORADO   )
                    ) ss.
COUNTY OF JEFFERSON )

The foregoing  instrument was acknowledged before me this day of , 1997, by Mark
H. McKinnies as President of Earth Sciences, Inc.

Witness my hand and official seal.

My Commission Expires:
                                                  ------------------------------
                                                  Notary Public
                                                  Name:
                                                        ------------------------

                                                  Address:
                                                          ----------------------
STATE OF COLORADO   )
                    ) ss.
COUNTY OF JEFFERSON )

The foregoing  instrument was acknowledged before me this day of , 1997, by Mark
H.  McKinnies  as President  of ESI  Resources  Limited on its own behalf and as
general partner of Earth Sciences Extraction Company.

Witness my hand and official seal.

         My Commission Expires:
                                               ---------------------------------
                                               Notary Public

                                               Name:
                                                    ----------------------------

                                               Address:
                                                       ------------------------

COMMONWEALTH OF MASSACHUSETTS )
                              ) ss.
COUNTY OF WORCESTER           )

The  foregoing  instrument  was  acknowledged  before me this day of , 1997,  by
Andrew C. Kadak, as President of Yankee Atomic Electric Company.

Witness my hand and official seal.

My Commission Expires:
                                                  ------------------------------
                                                          Notary Public
                                                  Name:
                                                       -------------------------

                                                  Address:
                                                          ----------------------



                                       7
                                       


<PAGE>

STATE OF VERMONT  )
                  ) ss.
COUNTY OF WINDHAM )

The foregoing  instrument was acknowledged  before me this day of , 1997 by Ross
P. Barkhurst, as President of Vermont Yankee Nuclear Power Corporation.

Witness my hand and official seal.
My Commission Expires:

                                                    ---------------------------
                                                    Notary Public
                                                    Name:
                                                          ---------------------
                                                                     
                                                    Address:
                                                            -------------------



                                       8
                                       




                                                                   Exhibit 10.7
                                LETTER OF INTENT

This  Letter of Intent is made and  entered  into  February  18,  1997 among ADA
Environmental  Solutions  LLC, a Colorado  limited  liability  company  ("ADA"),
ADA-ES, Inc., a Colorado corporation, the parent company of ADA and the owner of
all the membership interests in ADA ("Parent"),  the shareholders of Parent (the
"Parent  Shareholders")  named on the signature page hereof and Earth  Sciences,
Inc., a Colorado  corporation  ("ESI').  ADA, the Parent  Company and the Parent
Shareholders are collectively referred to herein as the "ADA Parties."

WHEREAS,  the ADA Parties are seeking funding to accomplish the business plan as
set  forth  in the  document  entitled  "Business  Plan  for  ADA  Environmental
Solutions - Flue Gas Conditioning  Technology for Cost Effective  Enhancement of
ESPs and Baghouses," dated March 1996 (the "Business  Plan"),  which among other
matters  discusses  the  use of  phosphoric  acid  for  treatment  of  flue  gas
particulates;

WHEREAS, ESI's wholly-owned subsidiary intends to produce phosphoric acid at its
facility in Calgary; and

WHEREAS,  ESI desires to acquire a 51 % interest in ADA and an option to acquire
a 100% equity  interest in the Parent Company and provide the funding  necessary
to accomplish the Business Plan, all in accordance with the terms and conditions
set forth in this Letter of Intent;

NOW,  THEREFORE,  the ADA  Parties  and  ESI,  in  consideration  of the  mutual
covenants  set forth  herein  and other  good and  valuable  consideration,  the
receipt of which is hereby acknowledged by each of the parties,  hereby agree as
follows:

1. Acquisition of Membership Interest in ADA.
- ---------------------------------------------

Simultaneously with the execution and delivery of this letter of intent, ESI has
paid  ADA  cash  in the  amount  of  $400,000  and  has  been  issued  by ADA in
consideration thereof a membership interest representing a four and eight tenths
percent (4.8%) interest in ADA. The operating  agreement of ADA has been amended
simultaneously  herewith  to reflect  the  ownership  by ESI of such  percentage
interest.

      In the event the  transactions  specified  in  Paragraph 2 hereof have not
been  consummated  on or before  April 30,  1997,  ESI shall  have the option of
requiring  ADA  to  repurchase  such  4.8%  by  making  equal  monthly  payments
commencing  not later than April  30,1998  over a two (2) year  period  totaling
$400,000  plus  interest  at a  compound  rate of 8% per annum from the date the
funds  are  received  by ADA  until  payment  is  made to ESI In the  event  the
transactions  specified  in Paragraph 2 hereof have not been  consummated  on or
before  April 30, 1997 and ESI shall not, by May 15, 1997  exercise its right to
cause ADA to repurchase the foregoing membership  interest,  then ADA shall have
the right to purchase  such  membership  interest  over a one year period on the
same terms, such right to be exercised on or before June 15, 1997.


2.   Acquisition   of  Additional   Interest  in  ADA  and  Option  From  Parent
Shareholders.
- --------------------------------------------------------------------------------

(a) The Parties will use their good faith  efforts to  consummate  the following
transactions on or before April 30, 1997 (the "Closing Date"):

(i) ESI, or a wholly-owned  subsidiary of ESI, will acquire an additional  46.2%
equity  interest  from ADA in exchange for  $500,000 in cash and a  non-interest
bearing  note in the amount of  $1,600,000  (the  "Note"),  payable as  follows:
$600,000 on or before June 30, 1997;  $500,000 on or before January 1, 1998; and
$500,000 on or before April 30, 1998.

(ii) The Parent Shareholders will grant ESI an irrevocable option (the "Option")
to acquire all of their shares in Parent  during a six month  period  commencing

<PAGE>


May 1, 1998 and ending October 31, 1998 in exchange (the  "Exchange") for shares
of common  stock,  $.01 par value per share (the  "Common  Stock")  of ESI.  The
number of shares of Common  Stock to be issued (the  "Shares")  in the  Exchange
shall be 1,715,600. The Shares will be
restricted  from  trading  pursuant  to rules  of the  Securities  and  Exchange
Commission;  however,  ESI will prepare and file (at its expense) a registration
statement  with  the  SEC  with  respect  to the  offering  and  sale  or  other
disposition of the Shares within 3 months of the exercise of the Option.

(b) The following  shall be conditions  precedent to the  obligations of the ADA
Parties and ESI to consummate the  transactions  specified in Paragraph 2(a) and
to ESI's right to exercise the Option:

(i) ESI shall provide assurances to the ADA Parties, acting reasonably, that the
additional  funding  needed to pay the Note, is or will be available to ESI. ESI
acknowledges  that on April 30, 1997  $400,000 and on June 30, 1997  $330,000 of
the  proceeds  will be used to  repay  certain  indebtedness  owed by ADA to ADA
Technologies,  Inc. incurred for operating  expenses of ADA. ESI agrees to cause
ADA to make such payment.

(ii) ESI shall satisfy itself, acting reasonably,  that the nature and prospects
of ADA  are,  in  material  respects,  as set  forth  in the  Business  Plan and
financial  statements that have been provided to ESI, and that there has been no
material adverse change in the business from what is set forth therein.

(iii) ADA shall satisfy itself, acting reasonably, that the nature and prospects
of ESI are, in all  material  respects,  as set forth in ESI's 1995 Form 10-KSB,
1996  Quarterly  Form  10-QSB,  and  other  materials  that  have been or may be
provided  to ADA,  and that  there has been no  material  adverse  change in the
business from what is set forth therein.

(iv)  ADA  and  ESI  will  negotiate  satisfactory  employee  contracts  for the
continued  employment of certain individuals and satisfaction of certain accrued
incentives by issuance of 36,305 of Common Stock of ESI.

(v) ESI shall use its best efforts to make  available  one seat on the ESI Board
of Directors to the ADA Parties so long as, in the  aggregate,  they own no less
than one million  shares of Common  Stock and agrees to  nominate an  individual
designated by the ADA Parties for such seat. Management shareholders of ESI will
enter into appropriate voting agreements, agreeing to vote their shares in favor
of one individual designated by the ADA Parties for such seat.

(vi) ADA and ESI will use their best efforts to effect the Exchange of Shares on
a tax free basis.

(vii) The parties shall negotiate and execute definitive documentation regarding
the  transactions  set forth in Paragraph  2(a).  Such  agreement  shall contain
customary  terms and conditions  normally  contained in an agreement for a stock
exchange and shall  provide,  among other things,  the terms and  conditions set
forth in subparagraphs (i), (iv), (v) and (vi) above and following:

(aa) Standard  representations  and warranties  regarding ESI's,  Parent's,  and
ADA's  financial  conditions,  operations,  assets and  liabilities  and capital
stock;

(bb) Covenants by the parties that the transactions shall comply with applicable
law;

(cc) In the event  that ESI does not  exercise  the  Option,  ADA shall have the
option to repurchase  all of the  membership  interest in ADA owned by ESI for a
purchase  price equal to $900,000 plus any amount paid by ESI on the Note,  such
price to be payable over a three year period in equal monthly  installments with
interest at a compound rate of 8% per annum. Upon exercise of such option by ADA
the Note shall be canceled.

(dd) In the event that ESI shall default on any payments on the Note, the Option
shall automatically terminate and ADA shall have the option to repurchase all of
the  membership  interest  in ADA  owned by ESI for a  purchase  price  equal to
$900,000 plus any amounts paid by ESI on the Note, such price to be payable over
a three year period in equal  monthly  installments  with interest at a compound
rate of 8% per  annum.  Upon  exercise  of such  option by ADA the Note shall be
canceled.

                                        2

<PAGE>


(ee) Satisfactory  registration  rights provisions  applicable to the Shares and
the resale thereof by the Parent Shareholders.

(ff) ESI will maintain covenants to continue listing of Common Stock on NASDAQ.

3. Cooperation.
- ---------------

     The parties to this Letter of Intent  recognize  that open  disclosure  and
cooperation  are essential to consummate the several  transactions  contemplated
hereby,  and each party hereby commits to use its best efforts to accomplish the
goals agreed upon herein.  Any cost incurred by any party during the period from
the date of signing  this Letter of Intent  until the Closing  Date shall be for
that party's own account. Prior to the expiration of the Option, the ADA Parties
shall not permit any issue or transfer of any equity  interest in ADA or Parent,
except as contemplated herein.

4. Press Release.
   -------------

     The parties agree to issue,  as soon as practical,  a joint press  release,
substantially  in the form of the attached Exhibit A, to announce the agreements
made herein.

5.  This Letter of Intent shall be binding on all parties hereto.
- --  -------------------------------------------------------------


     IN WITNESS WHEREOF,  the parties hereto have executed this Letter of Intent
as of the day and year hereinabove first written.

 Earth Sciences, Inc.


By:_/s/ Mark H. McKinnies
    ---------------------------------
    Mark H. McKinnies, its President


ADA Environmental Solutions, LLC

By:_/s/ Michael D. Durham                 By:  /s/ Judith A. Armstrong
   ----------------------------------          --------------------------------
Michael D. Durham, its Manager                 Judith A. Armstrong
                                           President, ADA Technologies, Inc.

ADA-ES, Inc.

By:_/s/ Judith A. Armstrong               By:  /s/ Kenneth E.Baldrey
   -----------------------------------         --------------------------------
Judith A. Armstrong,                         Kenneth E. Baldrey, 2% Shareholder
President, ADA Technologies, Inc.
 80% Shareholder


By:_/s/C. Jean Bustard                     By:  /s/Cameron E. Martin
   ------------------------------------        --------------------------------
     C. Jean Bustard, 6% Shareholder         Cameron E. Martin,  1% Shareholder


By:__/s/ John F. Wurster
   -------------------------------------
     John F. Wurster, 11% Shareholder

                                                                    
                                       3

                                       




                                                                    EXHIBIT 10.8

                          SECURITIES PURCHASE AGREEMENT


     SECURITIES  PURCHASE  AGREEMENT  dated as of the 21st day of  March,  1997,
between EARTH SCIENCES,  INC., a Colorado  corporation with principal  executive
offices located at 910 12th Street, Golden, Colorado 80401 (the "Company"),  and
the undersigned ("Buyer").

                              W I T N E S S E T H:

     WHEREAS,  Buyer  desires to  purchase  from the  Company,  and the  Company
desires  to issue  and sell to the  Buyer,  upon the terms  and  subject  to the
conditions of this Agreement,  the Company's 4% Convertible Debentures due March
31, 1999 (the "Debentures")  which, upon the terms and subject to the conditions
of the  Debentures,  will be  convertible  into shares of the  Company's  common
stock, $.01 par value (the "Common Stock", and together with the Debentures, the
"Securities");

     NOW THEREFORE,  in  consideration  of the premises and the mutual covenants
contained  herein,  the parties  hereto,  intending to be legally bound,  hereby
agree as follows:

     1. PURCHASE AND SALE OF DEBENTURES

     a. Transaction.  Buyer hereby agrees to purchase from the Company,  and the
Company  hereby  agrees to issue  and sell to the  Buyer,  $2,510,000  aggregate
principal amount of the Debentures  having the terms and conditions and being in
the form attached hereto as Annex I.

     b. Purchase Price;  Form of Payment.  The purchase price for the Debentures
to be purchased by Buyer hereunder  shall be $2,510,000 (the "Purchase  Price").
Buyer shall pay the Purchase  Price by wire  transfer of  immediately  available
funds to the escrow agent (the "Escrow  Agent")  identified  in the Joint Escrow
Instructions  attached  hereto as Annex II (the  "Joint  Escrow  Instructions").
Simultaneously  against receipt by the Escrow Agent of the Purchase  Price,  the
Company  shall  deliver  one  or  more  duly  authorized,  issued  and  executed
certificates (I/N/O Buyer) evidencing the Debentures, to the Escrow Agent or its
designated depository. By executing and delivering this Agreement, the Buyer and
the Company each hereby agrees to observe the terms and  conditions of the Joint
Escrow  Instructions,  all of which are  incorporated  herein by reference as if
fully set forth herein.


                                        

<PAGE>

     c. Method of Payment.  Payment into escrow of the  Purchase  Price shall be
made by wire transfer of immediately available funds to:

J.P. Morgan Services, Inc.
500 Stanton Christiana
Newark, Delaware 19713-2107
ABA# 021000238
SWIFT# MGTCUS33
For the Account of:  Weil, Gotshal & Manges LLP Special
Account
Account# 158-37-474
Reference# 73601.0001

Simultaneously  with the  execution of this  Agreement,  the Buyer shall deposit
with the Escrow Agent the Purchase  Price and the Company shall deposit with the
Escrow Agent the Debentures.

     2. BUYER'S REPRESENTATIONS,  WARRANTIES; ACCESS TO INFORMATION; INDEPENDENT
INVESTIGATION.

     Buyer  represents and warrants to and covenants and agrees with the Company
as follows:

     a. Buyer is  purchasing  the  Debentures  (and the  shares of Common  Stock
issuable upon conversion  thereof) for its own account,  for investment purposes
only and not with a view  towards  or in  connection  with  the  public  sale or
distribution thereof in violation of the Securities Act of 1933, as amended (the
"Securities Act").

     b. Buyer is (i) an "accredited  investor" within the meaning of Rule 501 of
Regulation D under the Securities Act, (ii) experienced in making investments of
the kind  contemplated  by this  Agreement,  (iii)  capable,  by  reason  of its
business and financial  experience,  of evaluating the relative merits and risks
of an  investment  in the  Securities,  and (iv) able to afford  the loss of its
investment in the Securities.

     c. Buyer  understands  that the  Debentures  (and the Common Stock issuable
upon  conversion  thereof) are being offered and sold by the Company in reliance
on an exemption  from the  registration  requirements  of the Securities Act and
equivalent state securities and "blue sky" laws, and that the Company is relying
upon the  accuracy of, and Buyer's  compliance  with,  Buyer's  representations,
warranties   and  covenants  set  forth  in  this  Agreement  to  determine  the
availability  of such  exemption  and the  eligibility  of Buyer to purchase the
Debentures;


                                        2

<PAGE>

     d.  Buyer has been  furnished  with or  provided  access  to all  materials
relating to the  business,  financial  position  and results  operations  of the
Company,  and all  other  materials  requested  by Buyer to enable it to make an
informed investment decision with respect to the Debentures.

     e.  Buyer  acknowledges  that it has  been  furnished  with  copies  of the
Company's  Annual  Report on Form 10-KSB for the fiscal year ended  December 31,
1995,  the Company's  Quarterly  Reports on Form 10-QSB for the fiscal  quarters
ended March 31, 1996,  June 30, 1996 and September 30, 1996,  respectively,  and
all  other  reports  and  documents  heretofore  filed by the  Company  with the
Securities and Exchange Commission (the "Commission") pursuant to the Securities
Act and the  Securities  Exchange Act of 1934, as amended (the  "Exchange  Act")
since December 31, 1995 (collectively the "Commission Filings").

     f.  Buyer  acknowledges  that  in  making  its  decision  to  purchase  the
Debentures it has (i) relied upon independent  investigations made by it and its
professional  advisors,  (ii) visited the Company's  principal executive offices
and been given access and the  opportunity  to examine all material  agreements,
books and  records of the Company and all  documents  relating to the  Company's
private placement of the Debentures,  and (iii) been given an opportunity to ask
questions  of and to receive  answers  from the  Company's  executive  officers,
directors and  management  personnel  concerning the terms and conditions of the
private placement of the Debentures by the Company.

     g.  Buyer  understands  that  the  Securities  have not  been  approved  or
disapproved  by the Commission or any state  securities  commission and that the
foregoing  authorities  have  not  reviewed  any  documents  or  instruments  in
connection  with  the  offer  and  sale to it of the  Securities  and  have  not
confirmed  or  determined  the  adequacy or accuracy  of any such  documents  or
instruments.

     h.  This  Agreement  has been duly and  validly  authorized,  executed  and
delivered  by the  Buyer  and is a valid  and  binding  agreement  of the  Buyer
enforceable  against  it in  accordance  with its terms,  subject to  applicable
bankruptcy,  insolvency, fraudulent conveyance,  reorganization,  moratorium and
similar laws affecting creditors' rights and remedies generally.

     i. Neither Buyer nor its  affiliates  nor any person acting on its or their
behalf has the intention of entering,  or will enter into, prior to the Closing,
any put option,  short  position or other  similar  instrument  or position with
respect to the Common Stock and neither Buyer nor any of its  affiliates nor any
person acting on its or their behalf will use at any time shares of Common Stock

                                        3

<PAGE>

acquired  pursuant to this Agreement or the Debentures to settle any put option,
short  position  or other  similar  instrument  or  position  that may have been
entered into prior to the execution of this Agreement.

     3. COMPANY'S REPRESENTATIONS

     The Company represents and warrants to Buyer that:

     a. Capitalization. (i) The authorized capital stock of the Company consists
of 25,000,000  shares of Common Stock, of which 8,577,951 shares are outstanding
on the date  hereof;  all of the issued and  outstanding  shares of Common Stock
have  been  duly   authorized   and  validly  issued  and  are  fully  paid  and
non-assessable.  The Common Stock issuable upon conversion of the Debentures has
been duly and validly  authorized and reserved for issuance by the Company,  and
when  issued  by the  Company  upon  conversion  of,  or as  dividends  on,  the
Debentures,  will be duly and validly issued,  fully paid and non-assessable and
will not subject the holder  thereof to  personal  liability  by reason of being
such holder.  There are no  preemptive,  subscription,  "call" or other  similar
rights to  acquire  the Common  Stock  (including  Common  Stock  issuable  upon
conversion  of the  Debentures)  that have been issued or granted to any person,
except as disclosed in the Commission Filings or otherwise  previously disclosed
in writing to Buyer.

     (ii) Except as disclosed in the  Commission  Filings,  the Company does not
own or control,  directly or indirectly,  any interest in any other corporation,
partnership,  limited liability company,  unincorporated  business organization,
association,  trust  or  other  business  entity.  Except  as  disclosed  in the
Commission  Filings,  the Company owns 100% of the outstanding shares of capital
stock of each of its subsidiaries, free and clear of any and all liens, pledges,
encumbrances,  charges, agreements,  security interests,  mortgages or claims of
any kind whatsoever.

     b. Organization; Reporting Company Status. (i) The Company is a corporation
duly  organized,  validly  existing and in good  standing  under the laws of the
State  of  Colorado  and is  duly  qualified  as a  foreign  corporation  in all
jurisdictions  in which the failure to so qualify would have a material  adverse
effect  on  the  business,   properties,   prospects,  condition  (financial  or
otherwise) or results of operations of the Company and its  subsidiaries,  taken
as a whole, or on the  consummation of any of the  transactions  contemplated by
this Agreement (a "Material Adverse Effect"). Each of the Company's subsidiaries
is a corporation duly organized, validly existing and in good standing under the
laws of its respective  jurisdiction of incorporation and is duly qualified as a
foreign  corporation  in all  jurisdictions  in which the  failure to so qualify
would have a Material Adverse Effect.

                                        4

<PAGE>

     (ii) The Company has  registered the Common Stock pursuant to Section 12 of
the  Exchange  Act and has timely  filed with the  Commission  all  reports  and
information  required to be filed by it pursuant  to all  reporting  obligations
under  Section  13(a) or  15(d),  as  applicable,  of the  Exchange  Act for the
24-month  period  immediately  preceding  the date  hereof.  The Common Stock is
listed  and traded on the  National  Association  of  Securities  Dealers,  Inc.
Automated  Quotation  ("NASDAQ")  Small  Capitalization  Market  System  and the
Company has not received any notice regarding,  and to its knowledge there is no
threat,  of the termination or  discontinuance  of the eligibility of the Common
Stock for such listing.

     c.  Authorized  Shares.  The Company has duly and  validly  authorized  and
reserved  for  issuance  shares of Common  Stock  sufficient  in number  for the
conversion,  in full, of the  Debentures  (assuming for purposes of this Section
3.c. a conversion price of $.75).

     d. Terms of  Debentures.  The  Debentures  when issued to Buyer pursuant to
this Agreement shall be in the form of Annex I attached hereto.

     e. Authority;  Validity and  Enforceability.  The Company has the requisite
corporate power and authority to enter into this Agreement and the  Registration
Rights  Agreement of even date herewith between the Company and Buyer, a copy of
which is annexed hereto as Annex III (the  "Registration  Rights Agreement") and
to perform  all of its  obligations  hereunder  and  thereunder  (including  the
issuance,  sale and  delivery to Buyer of the  Debentures  and the Common  Stock
issuable upon conversion  thereof).  The execution,  delivery and performance by
the Company of this Agreement and the  Registration  Rights  Agreement,  and the
consummation by the Company of the transactions contemplated hereby and thereby,
has been duly  authorized by all necessary  corporate  action on the part of the
Company.  Each of this Agreement and the Registration  Rights Agreement has been
duly and validly  executed and delivered by the Company and  constitutes a valid
and binding agreement of the Company  enforceable  against it in accordance with
its terms, subject to applicable bankruptcy,  insolvency, fraudulent conveyance,
reorganization,  moratorium  and similar laws  affecting  creditors'  rights and
remedies  generally.  The Debentures  have been duly and validly  authorized for
issuance by the Company and, when executed and delivered by the Company, will be
valid  and  binding  obligations  of  the  Company  enforceable  against  it  in
accordance  with their  terms,  subject to  applicable  bankruptcy,  insolvency,
fraudulent  conveyance,  reorganization,  moratorium  and similar laws affecting
creditors' rights and remedies generally.

                                        5

<PAGE>

     f.  Non-contravention.  The  execution  and delivery by the Company of this
Agreement and the Registration Rights Agreement,  the issuance of the Debentures
(and the Common Stock issuable upon conversion thereof), and the consummation by
the Company of the other transactions  contemplated  hereby and thereby,  do not
and will not  conflict  with or result in a breach by the  Company of any of the
terms or provisions of, or constitute a default (or an event which, with notice,
lapse of time or both,  would  constitute  a default)  under,  the  articles  of
incorporation  or by-laws of the Company,  or any indenture,  mortgage,  deed of
trust or other  material  agreement or instrument to which the Company or any of
its  subsidiaries  is a  party  or by  which  its or  any  of its  subsidiaries'
properties or assets are bound, or any law, rule, regulation,  decree,  judgment
or order of any court or public or governmental  authority  having  jurisdiction
over the Company or any of its  subsidiaries or any of its or its  subsidiaries'
properties or assets,  except such  conflict,  breach or default which would not
have a Material Adverse Effect.

     g. Approvals. No authorization,  approval or consent of any court or public
or  governmental  authority  is  required  to be obtained by the Company for the
issuance  and  sale of the  Debentures  (and  the  Common  Stock  issuable  upon
conversion  thereof) to Buyer as  contemplated  by this  Agreement,  except such
authorizations,  approvals  and consents  that have been obtained by the Company
prior to the date hereof.

     h. Commission Filings. None of the Commission Filings contained at the time
they were filed any untrue  statement of a material fact or omitted to state any
material fact required to be stated  therein or necessary to make the statements
made  therein,  in light of the  circumstances  under which they were made,  not
misleading.

     i. Absence of Certain Changes.  Since the Balance Sheet Date (as defined in
Section  3.m.),  there has not occurred any change,  event or  development,  and
there has not existed  any  condition  having or  reasonably  likely to have,  a
Material Adverse Effect.

     j. Full  Disclosure.  There is no fact  known to the  Company  (other  than
general economic or industry  conditions known to the public generally) that has
not been fully  disclosed in writing to the Buyer that (i)  reasonably  could be
expected to have a Material  Adverse Effect or (ii) reasonably could be expected
to  materially  and  adversely  affect the ability of the Company to perform its
obligations pursuant to this Agreement or the Registration Rights Agreement.


                                        6

<PAGE>

     k. Absence of  Litigation.  There is no action,  suit,  claim,  proceeding,
inquiry or investigation pending or, to the Company's knowledge,  threatened, by
or before any court or public or  governmental  authority  which,  if determined
adversely  to the  Company  or any of its  subsidiaries,  would  have a Material
Adverse Effect.

     l.  Absence of Events of Default.  No "Event of Default" (as defined in any
agreement or  instrument  to which the Company or any of its  subsidiaries  is a
party) and no event which, with notice,  lapse of time or both, would constitute
an Event of Default (as so defined), has occurred and is continuing, which could
have a Material Adverse Effect.

     m. Financial Statements;  No Undisclosed Liabilities.  Seller has delivered
to Buyer true and complete copies of its (i) audited  consolidated balance sheet
as at December  31,  1995 and the related  audited  consolidated  statements  of
operations  and cash flows for the fiscal  years  ended  December  31,  1995 and
December 31, 1994 and (ii) unaudited consolidated balance sheets as at March 31,
1996,  June 30,  1996 and  September  30,  1996,  respectively,  and the related
unaudited  consolidated   statements  of  operations  and  cash  flows  for  the
three-month  periods ended March 31, 1996, June 30, 1996 and September 30, 1996,
respectively,  including  in all such  cases the  related  notes  and  schedules
thereto (collectively,  the "Financial Statements"), and all management letters,
if any,  from the  Company's  independent  auditors  relating  to the  dates and
periods covered by the Financial Statements. Each of the Financial Statements is
complete and correct in all material  respects,  has been prepared in accordance
with United States General Accepted Accounting  Principles ("GAAP") (subject, in
the case of the interim Financial Statements, to normal year-end adjustments and
the absence of  footnotes)  and in conformity  with the  practices  consistently
applied by the Company without modification of the accounting principles used in
the preparation thereof, and fairly presents the financial position,  results of
operations and cash flows of the Company and its consolidated subsidiaries as at
the dates and for the  periods  indicated.  For  purposes  hereof,  the  audited
consolidated  balance sheet of the Company and its  subsidiaries  as at December
31, 1995 is hereinafter referred to as the "Balance Sheet" and December 31, 1995
is hereinafter  referred to as the "Balance Sheet Date". Neither the Company nor
any of its subsidiaries has any indebtedness,  obligations or liabilities of any
kind (whether accrued, absolute,  contingent or otherwise, and whether due or to
become due) that would have been required to be reflected  in,  reserved

                                        7

<PAGE>

against or otherwise  described in the Balance  Sheet or in the notes thereto in
accordance  with GAAP,  which was not fully  reflected in,  reserved  against or
otherwise  described  in the  Balance  Sheet  or the  notes  thereto  or was not
incurred in the ordinary  course of business  consistent with the Company's past
practices since the Balance Sheet Date.

     n. Compliance with Laws; Permits.  The Company and each of its subsidiaries
is in  compliance  with all laws,  rules,  regulations,  codes,  ordinances  and
statutes  (collectively  "Laws")  applicable  to it or to  the  conduct  of  its
business, except for such non-compliance which would not have a Material Adverse
Effect.  The  Company  and  each  of its  subsidiaries  possesses  all  permits,
approvals,  authorizations,  licenses, certificates and consents from all public
and governmental authorities which are necessary to conduct its business, except
for those the absence of which would not have a Material Adverse Effect.

     o.  Related  Party  Transactions.  Except  as set  forth in the  Commission
Filings, neither the Company nor any of its officers,  directors or "Affiliates"
(as such term is defined in Rule 12b-2 under the Exchange  Act) has borrowed any
moneys from or has outstanding any indebtedness or other similar  obligations to
the  Company.  Neither  the  Company  nor  any of  its  officers,  directors  or
Affiliates (i) owns any direct or indirect  interest of any kind in, or controls
or is a director,  officer,  partner, member or employee of, or consultant to or
lender to or borrower  from, or has the right to  participate in the profits of,
any person or entity which is (x) a competitor,  supplier,  customer,  landlord,
tenant,  creditor  or  debtor of the  Company  or any of its  subsidiaries,  (y)
engaged  in a  business  related to the  business  of the  Company or any of its
subsidiaries,  or (z) a participant  in any  transaction to which the Company or
any of  its  subsidiaries  is a  party  or  (ii)  is a  party  to any  contract,
agreement,  commitment  or  other  arrangement  with the  Company  or any of its
subsidiaries.

     p.  Insurance.  The  Company  maintains  property  and  casualty,   general
liability,  workers'  compensation,  environmental  hazard,  personal injury and
other similar types of insurance with financially  sound and reputable  insurers
that  is  adequate,   consistent  with  industry  standards  and  the  Company's
historical claims experience,  to cover all loss contingencies  which forseeably
may arise in the conduct of the  business  of the Company and its  subsidiaries.
The Company has not received notice from, and has no knowledge of any threat by,
any insurer (that has issued any  insurance  policy to the Company or any of its
subsidiaries)  that such  insurer  intends  to deny  coverage  under or  cancel,
discontinue or not renew any insurance policy presently in force.

                                        8

<PAGE>

     q. Securities Law Matters.  Based, in part,  upon the  representations  and
warranties  of Buyer  set forth in  Section 2 hereof,  the offer and sale by the
Company  of the  Debentures  (and the  Common  Stock  issuable  upon  conversion
thereof)  is  exempt  from  (i)  the   registration   and  prospectus   delivery
requirements  of the  Securities  Act  and  the  rules  and  regulations  of the
Commission thereunder and (ii) the registration and/or qualification  provisions
of all applicable  state  securities and "blue sky" laws. Other than pursuant to
an effective  registration  statement  under the Securities Act, the Company has
not  issued,  offered  or sold the  Debentures  or any  shares of  Common  Stock
(including for this purpose any securities of the same or a similar class as the
Debentures or Common Stock, or any securities  convertible  into or exchangeable
or exercisable for the Debentures or Common Stock or any such other  securities)
within the six-month period next preceding the date hereof,  except as disclosed
in the Commission Filings or otherwise previously disclosed in writing to Buyer,
and the Company shall not directly or indirectly  take, and shall not permit any
of its  directors,  officers or Affiliates  directly or indirectly to take,  any
action  (including,  without  limitation,  any offering or sale to any person or
entity of the Debentures or shares of Common Stock),  so as to make  unavailable
the exemption from Securities Act registration  being relied upon by the Company
for the offer and sale to Buyer of the Debentures (and the Common Stock issuable
upon conversion  thereof) as contemplated by this Agreement.  No form of general
solicitation or advertising has been used or authorized by the Company or any of
its officers,  directors or  Affiliates in connection  with the offer or sale of
the  Debentures  (and the Common  Stock  issuable  upon  conversion  thereof) as
contemplated  by this Agreement or any other agreement to which the Company is a
party.

     r. Environmental Matters. (i) The operations of the Company and each of its
subsidiaries  are in compliance with all applicable  Environmental  Laws and all
permits issued pursuant to Environmental Laws or otherwise;

     (ii)  to its  knowledge,  the  Company  and  each of its  subsidiaries  has
obtained all permits required under all applicable  Environmental Laws necessary
to operate its business;

     (iii) neither the Company nor any of its subsidiaries is the subject of any
outstanding  written order of or agreement  with any  governmental  authority or
person  respecting (i)  Environmental  Laws,  (ii) Remedial  Action or (iii) any
Release or threatened Release of Hazardous Materials;


                                        9

<PAGE>

     (iv)  neither the  Company nor any of its  subsidiaries  has  received  any
written  communication  alleging  either or both that the  Company or any of its
subsidiaries may be in violation of any  Environmental  Law or any permit issued
pursuant to Environmental Law, or may have any liability under any Environmental
Law;

     (v)  neither  the  Company  nor any of its  subsidiaries  has  any  current
contingent  liability in connection with any Release of any Hazardous  Materials
into the indoor or outdoor environment (whether on-site or off-site);

     (vi)  except  as set  forth in the  Commission  Filings,  to the  Company's
knowledge, there are no investigations of the business, operations, or currently
or previously  owned,  operated or leased  property of the Company or any of its
subsidiaries  pending or  threatened  which could lead to the  imposition of any
liability pursuant to any Environmental Law;

     (vii)  to the  Company's  knowledge,  there  is not  located  at any of the
properties of the Company or any of its subsidiaries any (A) underground storage
tanks,   (B)   asbestos-containing   material   or  (C)   equipment   containing
polychlorinated biphenyls; and,

     (viii)  the  Company  has  provided  to Buyer all  environmentally  related
audits, studies, reports, analyses, and results of investigations that have been
performed with respect to the currently or previously owned,  leased or operated
properties of the Company or any of its subsidiaries.

     For purposes of this Section 3.r.:

     "Environmental  Law" means any foreign,  federal,  state or local  statute,
regulation,  ordinance,  or rule of common law as now or  hereafter in effect in
any way relating to the protection of human health and safety or the environment
including,   without  limitation,  the  Comprehensive   Environmental  Response,
Compensation  and  Liability  Act (42 U.S.C.  ss. 9601 et seq.),  the  Hazardous
Materials  Transportation  Act (49 U.S.C.  App. ss. 1801 et seq.),  the Resource
Conservation  and Recovery Act (42 U.S.C. ss. 6901 et seq.), the Clean Water Act
(33 U.S.C.  ss. 1251 et seq.),  the Clean Air Act (42 U.S.C.  ss. 7401 et seq.),
the Toxic  Substances  Control  Act (15 U.S.C.  ss.  2601 et seq.),  the Federal
Insecticide,  Fungicide, and Rodenticide Act (7 U.S.C. ss. 136 et seq.), and the
Occupational  Safety  and  Health  Act (29  U.S.C.  ss.  651 et  seq.),  and the
regulations promulgated pursuant thereto.


                                       10

<PAGE>

     "Hazardous  Material"  means  any  substance,  material  or waste  which is
regulated by the United States, Canada or any of its provinces,  or any state or
local governmental  authority including,  without limitation,  petroleum and its
by-products,  asbestos,  and any  material  or  substance  which is defined as a
"hazardous  waste," "hazardous  substance,"  "hazardous  material,"  "restricted
hazardous waste," "industrial waste," "solid waste," "contaminant," "pollutant,"
"toxic waste" or toxic substance" under any provision of any Environmental Law;

     "Release" means any release, spill, filtration, emission, leaking, pumping,
injection, deposit, disposal, discharge,  dispersal, or leaching into the indoor
or outdoor environment, or into or out of any property;

     "Remedial  Action" means all actions to (x) clean up,  remove,  treat or in
any other way address  any  Hazardous  Material;  (y) prevent the Release of any
Hazardous Material so it does not endanger or threaten to endanger public health
or welfare or the indoor or outdoor  environment;  or (z)  perform  pre-remedial
studies and investigations or post- remedial monitoring and care.

     s. Labor Matters. Except as set forth on Schedule 3.s., neither the Company
nor any of its  subsidiaries  is party to any  labor  or  collective  bargaining
agreement  and  there are no labor or  collective  bargaining  agreements  which
pertain to employees of the Company or any of its subsidiaries.  No employees of
the Company or any of its subsidiaries are represented by any labor organization
and none of such employees has made a pending demand for recognition,  and there
are  no  representation   proceedings  or  petitions  seeking  a  representation
proceeding  presently pending or, to the Company's  knowledge,  threatened to be
brought  or  filed,  with the  National  Labor  Relations  Board or other  labor
relations tribunal. There is no organizing activity involving the Company or any
of its  subsidiaries  pending or to the Company's  knowledge,  threatened by any
labor  organization  or  group  of  employees  of  the  Company  or  any  of its
subsidiaries.  There are no (i) strikes, work stoppages,  slowdowns, lockouts or
arbitrations or (ii) material  grievances or other labor disputes pending or, to
the knowledge of the Company, threatened against or involving the company or any
of its subsidiaries.  There are no unfair labor practice charges,  grievances or
complaints  pending or, to the  knowledge  of the Company,  threatened  by or on
behalf of any employee or group of employees of the Company.

     t. ERISA Matters.  Each of the Company,  its  subsidiaries  and their ERISA
Affiliates  is in compliance  in all material  respects  with all  provisions of
ERISA applicable to it. No Reportable Event has occurred, been waived or exists

                                       11

<PAGE>


as to which the Company or any of its  subsidiaries  or any ERISA  Affiliate was
required to file a report with the Pension Benefits  Guaranty  Corporation,  and
the present value of all liabilities under all Plans (based on those assumptions
used to fund such Plans) did not, as of the most recent  annual  valuation  date
applicable  thereto,  exceed  the value of the  assets of all such  Plans in the
aggregate.  None of the Company or any of its  subsidiaries or ERISA  Affiliates
has incurred any Withdrawal  Liability  that could result in a Material  Adverse
Effect.  None of the Company or any of its  subsidiaries or ERISA Affiliates has
received any notification  that any  Multiemployer  Plan is in reorganization or
has  been  terminated   within  the  meaning  of  Title  IV  of  ERISA,  and  no
Multiemployer Plan is reasonably expected to be in reorganization or termination
where such  reorganization  or termination  has resulted or could  reasonably be
expected to result in increases to the contributions required to be made to such
Plan or otherwise.

     For purposes of this Section 3.t.:

     "ERISA" means the Employee  Retirement  Income Security Act of 1974, or any
successor statute,  together with the regulations thereunder, as the same may be
amended from time to time.

     "ERISA Affiliate" means any trade or business (whether or not incorporated)
that was, is or hereafter  may become,  a member of a group of which the Company
or any of its subsidiaries is a member and which is treated as a single employer
under ss. 414 of the Internal  Revenue Code of 1986,  as amended (the  "Internal
Revenue Code").

     "Multiemployer  Plan"  means a  multiemployer  plan as  defined  in Section
4001(a)(3) of ERISA to which the Company or any ERISA Affiliate  (other than one
considered an ERISA  Affiliate only pursuant to subsection (m) or (o) of ss. 414
of the  Internal  Revenue  Code) is making or  accruing  an  obligation  to make
contributions,  or has  within  any of the  preceding  five plan  years  made or
accrued an obligation to make contributions.

     "PBGC"  means the  Pension  Benefit  Guaranty  Corporation  referred to and
defined in ERISA or any successor thereto.

     "Plan" means any pension plan (other than a Multiemployer  Plan) subject to
the provision of Title IV of ERISA or ss. 412 of the Internal  Revenue Code that
is maintained for employees of the Company or any ERISA Affiliate.


                                       12

<PAGE>

     "Reportable Event" means any reportable event as defined in Section 4043(b)
of ERISA or the regulations issued thereunder with respect to a Plan (other than
a Plan  maintained by an ERISA  Affilare  that is considered an ERISA  Affiliate
only pursuant to subsection (m) or (o) of ss. 414 of the Internal Revenue Code.

     "Withdrawal  Liability" means liability to a Multiemployer Plan as a result
of a complete or partial withdrawal from such Multiemployer  Plan, as such terms
are defined in Part I of Subtitle E of Title IV of ERISA.

     u. Tax Matters. (i) The Company and each of its subsidiaries have filed all
Tax Returns which they are required to file under  applicable  Laws,  except for
such Tax  Returns in respect of which the  failure to so file does not and could
not have a Material  Adverse Effect;  all such Tax Returns are true and accurate
and have been prepared in compliance  with all applicable  Laws; the Company and
each of its  subsidiaries  have paid all Taxes due and owing by them (whether or
not such Taxes are  required to be shown on a Tax Return) and have  withheld and
paid  over to the  appropriate  taxing  authorities  all  Taxes  which  they are
required to withhold  from amounts paid or owing to any  employee,  stockholder,
creditor or other third parties;  and since the Balance Sheet Date, the charges,
accruals  and  reserves  for Taxes with  respect to the Company  (including  any
provisions for deferred income taxes)  reflected on the books of the Company are
adequate to cover any Tax  liabilities  of the Company and its  subsidiaries  if
their current tax year were treated as ending on the date hereof.

     (ii) No claim has been made by a taxing  authority in a jurisdiction  where
either the Company or any of its  subsidiaries  does not file tax  returns  that
such  corporation is or may be subject to taxation by that  jurisdiction.  There
are no foreign, federal, state or local tax audits or administrative or judicial
proceedings pending or being conducted with respect to the Company or any of its
subsidiaries;  no  information  related to Tax matters has been requested by any
foreign,  federal,  state or  local  taxing  authority;  and no  written  notice
indicating  an intent to open an audit or other review has been  received by the
Company from any foreign, federal, state or local taxing authority. There are no
material  unresolved  questions or claims concerning the Company's or any of its
subsidiaries' Tax liability. Neither the Company nor any of its subsidiaries (A)
has  executed or entered  into a closing  agreement  pursuant to ss. 7121 of the
Internal  Revenue  Code or any  predecessor  provision  thereof  or any  similar
provision of state, local or foreign law; or (B) has agreed to or is required to
make any adjustments pursuant to ss. 481 (a) of the Internal Revenue Code or any
similar  provision  of  state,  local or  foreign  law by  reason of a change in

                                       13

<PAGE>

accounting method initiated by the Company or any of its subsidiaries or has any
knowledge that the IRS has proposed any such  adjustment or change in accounting
method,  or has any  application  pending with any taxing  authority  requesting
permission for any changes in accounting  methods that relate to the business or
operations  of the Company or any of its  subsidiaries.  Neither the Company nor
any of  its  subsidiaries  has  been  a  United  States  real  property  holding
corporation  within the meaning of ss.  897(c)(2) of the  Internal  Revenue Code
during the applicable period specified in ss.  897(c)(1)(A)(ii)  of the Internal
Revenue Code.

     (iii) Neither the Company nor any of its  subsidiaries has made an election
under ss. 341(f) of the Internal  Revenue  Code.  Neither the Company nor any of
its  subsidiaries  is  liable  for the  Taxes of  another  person  that is not a
subsidiary  of the Company  under (A) Treas.  Reg. ss.  1.1502-6 (or  comparable
provisions of state,  local or foreign  law),  (B) as a transferee or successor,
(C) by contract or  indemnity or (D)  otherwise.  Neither the Company nor any of
its  subsidiaries is a party to any tax sharing  agreement.  Neither the Company
nor any of its subsidiaries has made any payments, is obligated to make payments
or is a party to an agreement  that could  obligate it to make any payments that
would not be deductible under ss. 280G of the Internal Revenue Code.

     For purposes of this Section 3.u.:

     "IRS" means the United States Internal Revenue Service.

     "Tax" or "Taxes" means federal,  state,  county,  local,  foreign, or other
income, gross receipts, ad valorem, franchise,  profits, sales or use, transfer,
registration, excise, utility, environmental,  communications,  real or personal
property,   capital  stock,   license,   payroll,  wage  or  other  withholding,
employment, social security, severance, stamp, occupation, alternative or add-on
minimum,  estimated and other taxes of any kind whatsoever  (including,  without
limitation, deficiencies, penalties, additions to tax, and interest attributable
thereto) whether disputed or not.

     "Tax Return" means any return, information report or filing with respect to
Taxes,  including  any  schedules  attached  thereto and including any amendment
thereof.

     v. No  Misrepresentation.  No  representation  or  warranty  of the Company
contained  in this  Agreement,  any  schedule,  annex or  exhibit  hereto or any
agreement,  instrument or certificate furnished by the Company to Buyer pursuant
to this Agreement,  contains any untrue statement of a material fact or omits to
state a material  fact  required to be stated  therein or  necessary to make the
statements therein, not misleading.


                                       14

<PAGE>

     4. CERTAIN COVENANTS AND ACKNOWLEDGMENTS.

     a. Restrictive  Legend.  Buyer  acknowledges and agrees that, upon issuance
pursuant  to this  Agreement,  the  Debentures  (and any shares of Common  Stock
issued  in  conversion   thereof)  shall  have  endorsed  thereon  a  legend  in
substantially  the  following  form  (and a  stop-transfer  order  may be placed
against  transfer of the Debentures and the shares of Common Stock issuable upon
conversion thereon):

          "THESE   SECURITIES  HAVE  NOT  BEEN  REGISTERED  UNDER  THE
          SECURITIES ACT OF 1933, AS AMENDED (THE  "SECURITIES  ACT"),
          OR THE SECURITIES  LAWS OF ANY STATE,  AND ARE BEING OFFERED
          AND SOLD  PURSUANT  TO AN  EXEMPTION  FROM THE  REGISTRATION
          REQUIREMENTS  OF THE  SECURITIES  ACT AND SUCH  LAWS.  THESE
          SECURITIES MAY NOT BE SOLD OR TRANSFERRED EXCEPT PURSUANT TO
          AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT
          OR PURSUANT TO AN AVAILABLE  EXEMPTION FROM THE REGISTRATION
          REQUIREMENTS OF THE SECURITIES ACT OR SUCH OTHER LAWS."


     b. Filings. The Company shall make all necessary filings in connection with
the sale of the Debentures to the Buyer as required by all applicable  Laws, and
shall provide a copy thereof to the Buyer promptly after such filing.

     c.  Reporting  Status.  So long as the Buyer  beneficially  owns any of the
Securities,  the Company shall file all reports  required to be filed by it with
the Commission pursuant to Section 13 or 15(d) of the Exchange Act and shall not
terminate  its status as an issuer  required to file reports  under the Exchange
Act even if such act or the rules and  regulations  thereunder  would  otherwise
permit such termination.

     d. Use of Proceeds. The Company shall use the proceeds from the sale of the
Debentures  (excluding  amounts  paid by the Company for legal fees and finder's
fees  in  connection  with  such  sale)  for  the  construction,   retrofit  and
refurbishing of the Company's phosphate plants in Calgary, Alberta, and fees and
expenses payable to Corporate Relations Group Inc.

     e. Restrictions on Additional Financings;  Right of First Offer. Except for
the transactions previously disclosed in writing to Buyer, the Company shall not
conduct or enter into any agreement, commitment or arrangement providing for the

                                       15

<PAGE>

offer or sale of debt or equity  securities (or any securities  convertible into
or  exchangeable or exercisable  for debt or equity  securities)  with any third
party until the 241st day after the Closing  Date,  except that (i) with respect
to an  additional  amount of up to $1 million,  to the extent the Buyer does not
invest such funds in  securities  of the Company  within 30 days  following  the
Closing  Date on terms to be mutually  agreed upon,  the Company  shall have the
right to sell debt or  equity  securities  (or  securities  convertible  into or
exchangeable  or exercisable  for debt or equity  securities) to any third party
provided the Buyer is first offered the opportunity (which shall remain open for
a period of 30 days from the date the Buyer receives notice thereof) to purchase
such  additional  securities on terms and  conditions no less favorable to Buyer
than those  offered in writing by such third party  ("right of first  refusal"),
(ii)  commencing on the 131st day after the Closing Date, the Company shall have
the right to sell debt or equity  securities  to any third  party to the  extent
necessary  to raise an  additional  $2 million  provided  the Buyer is offered a
right of first  refusal (as  defined in clause (i) above)  with  respect to such
securities,  and (iii) for the 60-day  period  commencing on the 181st day after
the  Closing  Date,  the  Company  shall  have the  right to sell debt or equity
securities  to any third party (in  addition  to the amount  referred to in (ii)
above)  provided  the Buyer is offered a right of first  refusal  (as defined in
clause  (i) above)  with  respect  to such  securities.  In the event that Buyer
declines to participate  in any such right of first  refusal,  the Company shall
provide the Buyer with prompt  written  notice of the  consummation  of any such
transaction with a third party, specifying the material terms thereof; provided,
however,  the provisions of this Section 4.f. shall not apply to the issuance of
Company  securities  in  connection  with  a  merger,  consolidation,   business
combination, sale of all or substantially all of the Company's assets or similar
extra-ordinary  corporate  transaction  involving  the  Company  or  any  of its
subsidiaries.

     f. Listing.  Except to the extent the Company becomes  eligible to list its
Common  Stock on a national  securities  exchange or obtained  authorization  to
include the Common Stock for quotation on the NASDAQ National Market System, the
Company  shall  maintain  its  listing of the Common  Stock on the NASDAQ  Small
Capitalization Market System.

     g. Reserved  Conversion Shares. The Company at all times from and after the
date hereof  shall have a  sufficient  number of shares of Common Stock duly and
validly authorized and reserved for issuance to satisfy the conversion, in full,
of the  Debentures  (assuming  for purposes of this  Section  3.g., a conversion
price of $.75).


                                       16

<PAGE>
     5. TRANSFER AGENT INSTRUCTIONS.

     a. The Company  undertakes  and agrees that no  instruction  other than the
instructions  referred  to  in  this  Section  5  and  customary  stop  transfer
instructions  prior to the registration and sale of the Common Stock pursuant to
an effective Securities Act registration statement will be given to its transfer
agent for the Common Stock and that the Common Stock issuable upon conversion of
the Debentures  otherwise shall be freely  transferable on the books and records
of the Company as and to the extent provided in this Agreement, the Registration
Rights  Agreement and  applicable  law.  Nothing  contained in this Section 5.a.
shall  affect in any way Buyer's  obligations  and  agreement to comply with all
applicable  securities  laws upon resale of such Common Stock.  If, at any time,
Buyer provides the Company with an opinion of counsel reasonably satisfactory to
the Company that registration of the resale by Buyer of such Common Stock is not
required under the Securities Act and that the removal of restrictive legends is
permitted  under  applicable  law, the Company shall permit the transfer of such
Common Stock and, promptly instruct the Company's transfer agent to issue one or
more  certificates  for Common Stock without any  restrictive  legends  endorsed
thereon.

     b. The Company  shall  permit  Buyer to  exercise  its right to convert the
Debentures by telecopying an executed and completed  Notice of Conversion to the
Company and  delivering to the Company by express  courier  within five business
days  thereafter,  the original  Notice of Conversion and the  Debentures  being
converted.  Each  date on which a Notice  of  Conversion  is  telecopied  to and
received by the Company in accordance with the provisions hereof shall be deemed
a Conversion  Date. The Company shall transmit the  certificates  evidencing the
shares of Common Stock issuable upon conversion of any Debentures (together with
certificates  evidencing  any principal  amount of the  Debentures  not being so
converted) to Buyer via express  courier,  by electronic  transfer or otherwise,
within five business days after receipt by the Company of the original Notice of
Conversion and the Debentures to be converted (the "Delivery Date").

     c. The Company  understands  that a delay in the  issuance of the shares of
Common  Stock upon such  conversion  beyond the  Delivery  Date could  result in
economic  loss to Buyer.  As  compensation  to Buyer for such loss (and not as a
penalty),  the Company  agrees to pay to Buyer for late issuance of Common Stock
upon conversion in accordance with the following  schedule (where "No.  Business
Days" is  defined  as the  number of  business  days  beyond  five (5) days from
Delivery Date):



                                       17

<PAGE>

                                       Compensation For Each
                                       $20,000 Principal
                                       Amount of Debentures
         No. Business Days             Not Converted Timely
         -----------------             --------------------

                    1                          $25
                    2                          $50
                    3                          $75
                    4                          $100
                    5                          $125
                    6                          $150
                    7                          $175
                    8                          $200
                    9                          $225
                   10                          $250
         more than 10                          $250 + $100 for each
                                               Business Day Late
                                               beyond 10 days

The Company shall pay to Buyer the compensation  described above by the transfer
of immediately  available funds upon Buyer's demand.  Nothing herein shall limit
Buyer's  right to pursue actual  damages for the Company's  failure to issue and
deliver  Common Stock to Buyer,  and in addition to any other remedies which may
be available to Buyer,  in the event the Company  fails for any reason to effect
delivery of such shares of Common  Stock  within  five  business  days after the
relevant  Delivery Date,  Buyer shall be entitled to rescind the relevant Notice
of Conversion by delivering a notice to such effect to the Company whereupon the
Company and Buyer shall each be restored to their respective  original positions
immediately prior to delivery of such Notice of Conversion.

For  purposes  of this  Section  5.c.,  an act of God shall  excuse the delay in
issuance of shares of Common Stock upon  conversion  beyond the Delivery Date in
the event that acts of war or terrorism,  or some other  catastrophic  event not
encountered  in  business   renders  the  Company's  or  its  transfer   agent's
performance  impossible.  Such delay in issuance of shares shall be excused only
for so long as the act of God in fact renders  performance  impossible but in no
event longer than seven (7) business days.

     6. DELIVERY INSTRUCTIONS.

     The  Debentures  shall be  delivered  by the  Company to the  Escrow  Agent
pursuant  to Section  1(b) hereof on a  "delivery-against-payment  basis" at the
Closing.

     7. CLOSING DATE.

     The date and time of the issuance and sale of the Debentures  (the "Closing
Date")  shall be the date hereof or such other as shall be mutually  agreed upon

                                       18

<PAGE>

in writing.  The issuance and sale of the Debentures  shall occur on the Closing
Date  at the  offices  of the  Escrow  Agent.  Notwithstanding  anything  to the
contrary  contained herein,  the Escrow Agent shall not be authorized to release
to the Company the Purchase Price and to Buyer the certificate(s)  (I/N/O Buyer)
evidencing  the  Debentures  being  purchased by Buyer unless the conditions set
forth in Section 8(c) and 9(g) hereof have been satisfied.

     8. CONDITIONS TO THE COMPANY'S OBLIGATIONS.

     The Buyer understands that the Company's  obligation to sell the Debentures
on the Closing Date to Buyer pursuant to this Agreement is conditioned upon:

     a. Delivery by Buyer to the Escrow Agent of the Purchase Price;

     b. The accuracy on the Closing Date of the  representations  and warranties
of Buyer  contained in this Agreement as if made on the Closing Date (except for
representations  and warranties  which, by their express terms,  speak as of and
relate to a specified  date, in which case such accuracy shall be measured as of
such specified date) and the performance by Buyer in all material respects on or
before the Closing Date of all covenants and  agreements of Buyer required to be
performed by it pursuant to this Agreement on or before the Closing Date;

     c. There shall not be in effect any Law or order, ruling,  judgment or writ
of any court or public  or  governmental  authority  restraining,  enjoining  or
otherwise prohibiting any of the transactions contemplated by this Agreement.

     9. CONDITIONS TO BUYER'S OBLIGATIONS.

     The Company  understands that Buyer's obligation to purchase the Debentures
on the Closing Date pursuant to this Agreement is conditioned upon:

     a. Delivery by the Company to the Escrow Agent of one or more  certificates
(I/N/O Buyer)  evidencing  the  Debentures to be purchased by Buyer  pursuant to
this Agreement;

     b. The accuracy on the Closing Date of the  representations  and warranties
of the  Company  contained  in this  Agreement  as if made on the  Closing  Date
(except for  representations and warranties which, by their express terms, speak
as of and  relate to a  specified  date,  in which case such  accuracy  shall be
measured as of such specified date) and the  performance  by the Company in all

                                       19

<PAGE>

material  respects on or before the Closing Date of all covenants and agreements
of the Company  required to be performed by it pursuant to this  Agreement on or
before the Closing Date;

     c. Buyer having  received an opinion of counsel for the Company,  dated the
Closing Date, in form, scope and substance reasonably satisfactory to the Buyer,
to the effect set forth in Annex III attached hereto.

     d. There not having  occurred (i) any general  suspension of trading in, or
limitation  on  prices  listed  for,  the  Common  Stock  on  the  NASDAQ  Small
Capitalization  Market System,  (ii) the declaration of a banking  moratorium or
any suspension of payments in respect of banks in the United  States,  (iii) the
commencement  of a war,  armed  hostilities or other  international  or national
calamity  directly  or  indirectly  involving  the  United  States or any of its
territories,  protectorates or possessions, or (iv) in the case of the foregoing
existing at the date of this  Agreement,  a material  acceleration  or worsening
thereof.

     e. There not having occurred any event or  development,  and there being in
existence no condition,  having or which  reasonably and forseeably could have a
Material Adverse Effect.

     f. The Company shall have delivered to Buyer (by bank or certified check or
wire  transfer  of  immediately  available  funds to an  account  (or  accounts)
specified by Buyer to the Company)  reimbursement of Buyer's out-of-pocket costs
and expenses  incurred in connection with the transactions  contemplated by this
Agreement  (including the  reasonable  fees and  disbursements  of Buyer's legal
counsel),  upon  submission by Buyer to the Company of  appropriate  documentary
evidence of such out-of-pocket costs and expenses.

     g. There shall not be in effect any Law or order, ruling,  judgment or writ
of any court or public  or  governmental  authority  restraining,  enjoining  or
otherwise prohibiting any of the transactions contemplated by this Agreement.

     10. TERMINATION.

     a. Termination by Mutual Written Consent.  This Agreement may be terminated
and the transactions contemplated hereby may be abandoned, for any reason and at
any time prior to the Closing Date, by the mutual written consent of the Company
and Buyer.


                                       20

<PAGE>

     b.  Termination  by the Company or Buyer.  This Agreement may be terminated
and the  transactions  contemplated  hereby  may be  abandoned  by action of the
Company or Buyer if (i) the Closing  shall not have occurred at or prior to 5:00
p.m., New York City time, on March 31, 1997; provided,  however,  that the right
to  terminate  this  Agreement  pursuant to this Section  10.a.(i)  shall not be
available  to any party whose  failure to fulfill any of its  obligations  under
this  Agreement  has been the cause of or resulted in the failure of the Closing
to occur  at or  before  such  time and  date or (ii)  any  court or  public  or
governmental authority shall have issued an order, ruling,  judgment or writ, or
there  shall  be  in  effect  any  Law,  restraining,   enjoining  or  otherwise
prohibiting  the  consummation of any of the  transactions  contemplated by this
Agreement.

     c.  Termination  by  Buyer.  This  Agreement  may  be  terminated  and  the
transactions  contemplated hereby may be abandoned by Buyer at any time prior to
the Closing Date, if (i) the Company shall have failed to comply in any material
respect with any of its  covenants or  agreements  contained in this  Agreement,
(ii)  there  shall  have  been a  breach  by the  Company  with  respect  to any
representation  or warranty made by it in this  Agreement,  or (iii) there shall
have  occurred  any event or  development,  or there shall be in  existence  any
condition, having or reasonably and forseeably likely to have a Material Adverse
Effect.

     d.  Termination  by the Company.  This  Agreement may be terminated and the
transactions  contemplated  hereby may be  abandoned  by the Company at any time
prior to the  Closing  Date,  if (i) Buyer  shall  have  failed to comply in any
material  respect  with any of its  covenants  or  agreements  contained in this
Agreement  or (ii) there  shall have been a breach by Buyer with  respect to any
representation or warranty made by it in this Agreement.

     11. SURVIVAL; INDEMNIFICATION.

     a.  The  representations,  warranties  and  covenants  made  by each of the
Company and Buyer in this Agreement, the annexes,  schedules and exhibits hereto
and in each instrument,  agreement and certificate entered into and delivered by
them pursuant to this Agreement,  shall survive the Closing and the consummation
of the transactions  contemplated  hereby. In the event of a breach or violation
of any of such representations,  warranties or covenants, the party to whom such
representations,  warranties  or covenants  have been made shall have all rights
and remedies for such breach or violation  available to it under the  provisions
of this Agreement or otherwise, whether at law or in equity, irrespective of any
investigation  made by or on  behalf  of such  party on or prior to the  Closing
Date.

                                       21

<PAGE>

     b. Indemnification of Buyer by the Company.

     The Company  hereby agrees to indemnify  and hold  harmless the Buyer,  its
Affiliates  and their  respective  officers,  directors,  partners  and  members
(collectively,  the "Buyer  Indemnitees"),  from and against any and all losses,
claims,   damages,   judgments,   penalties,    liabilities   and   deficiencies
(collectively,  "Losses"), and agrees to reimburse the Buyer Indemnitees for all
out-of-pocket  expenses  (including the fees and expenses of legal counsel),  in
each case  promptly  as  incurred  by the Buyer  Indemnitees  and to the  extent
arising out of or in connection with:

                  (i) any  misrepresentation,  omission of fact or breach of any
         of the  Company's  representations  or  warranties  contained  in  this
         Agreement, the annexes, schedules or exhibits hereto or any instrument,
         agreement  or  certificate  entered  into or  delivered  by the Company
         pursuant to this Agreement; or

                  (ii) any  failure by the  Company  to perform in any  material
         respect any of its covenants,  agreements,  undertakings or obligations
         set forth in this Agreement, the annexes,  schedules or exhibits hereto
         or any instrument,  agreement or certificate  entered into or delivered
         by the Company pursuant to this Agreement.

     c. Indemnification of the Company by Buyer.

     Buyer  hereby  agrees to  indemnify  and hold  harmless  the  Company,  its
Affiliates  and their  respective  officers,  directors,  partners  and  members
(collectively, the "Company Indemnitees"),  from and against any and all Losses,
and agrees to reimburse the Company  Indemnitees for all out-of-pocket  expenses
(including  the fees and expenses of legal  counsel),  in each case  promptly as
incurred  by the  Company  Indemnitees  and to the extent  arising  out of or in
connection with:

                  (i) any misrepresentation,  omission of fact, or breach of any
         of Buyer's  representations or warranties  contained in this Agreement,
         the annexes, schedules or exhibits hereto or any instrument,  agreement
         or  certificate  entered into or  delivered  by Buyer  pursuant to this
         Agreement; or

                  (ii) any failure by Buyer to perform in any  material  respect
         any of its covenants, agreements, undertakings or obligations set forth
         in this Agreement or any instrument,  certificate or agreement  entered
         into or delivered by Buyer pursuant to this Agreement.


                                       22

<PAGE>

     d. Third  Party  Claims.  Promptly  after  receipt by either  party  hereto
seeking indemnification  pursuant to this Section 11 (an "Indemnified Party") of
written  notice  of any  investigation,  claim,  proceeding  or other  action in
respect  of which  indemnification  is  being  sought  (each,  a  "Claim"),  the
Indemnified  Party promptly shall notify the party against whom  indemnification
pursuant to this  Section 11 is being sought (the  "Indemnifying  Party") of the
commencement thereof; but the omission to so notify the Indemnifying Party shall
not relieve it from any liability that it otherwise may have to the  Indemnified
Party, except to the extent that the Indemnifying Party is materially prejudiced
and  forfeits  substantive  rights and  defenses by reason of such  failure.  In
connection  with any  Claim as to which  both  the  Indemnifying  Party  and the
Indemnified  Party are  parties,  the  Indemnifying  Party  shall be entitled to
assume the defense thereof. Notwithstanding the assumption of the defense of any
Claim by the Indemnifying  Party, the Indemnified  Party shall have the right to
employ  separate  legal counsel and to participate in the defense of such Claim,
and the Indemnifying Party shall bear the reasonable fees,  out-of-pocket  costs
and expenses of such  separate  legal counsel to the  Indemnified  Party if (and
only if):  (x) the  Indemnifying  Party  shall  have  agreed  to pay such  fees,
out-of-pocket costs and expenses, (y) the Indemnified Party and the Indemnifying
Party  reasonably  shall have concluded that  representation  of the Indemnified
Party  by the  Indemnifying  Party  by  the  same  legal  counsel  would  not be
appropriate  due to actual or, as reasonably  determined by legal counsel to the
Indemnified Party,  potentially  differing interests between such parties in the
conduct  of the  defense  of such  Claim,  or if  there  may be  legal  defenses
available to the  Indemnified  Party that are in addition to or  disparate  from
those available to the Indemnifying  Party, or (z) the Indemnifying  Party shall
have failed to employ legal counsel  reasonably  satisfactory to the Indemnified
Party within a reasonable  period of time after  notice of the  commencement  of
such  Claim.  If  the  Indemnified  Party  employs  separate  legal  counsel  in
circumstances  other than as described  in clauses  (x),  (y) or (z) above,  the
fees, costs and expenses of such legal counsel shall be borne exclusively by the
Indemnified  Party.  Except as provided above, the Indemnifying Party shall not,
in connection  with any Claim in the same  jurisdiction,  be liable for the fees
and expenses of more than one firm of legal  counsel for the  Indemnified  Party
(together with appropriate  local counsel).  The  Indemnifying  Party shall not,
without the prior written consent of the Indemnified  Party (which consent shall
not unreasonably be withheld),  settle or compromise any Claim or consent to the
entry of any  judgment  that does not  include an  unconditional  release of the
Indemnified Party from all liabilities with respect to such Claim or judgment.


                                       23

<PAGE>

     e. Other Claims.

     In the event one party  hereunder  should have a claim for  indemnification
that does not involve a claim or demand  being  asserted by a third  party,  the
Indemnified   Party   promptly  shall  deliver  notice  of  such  claim  to  the
Indemnifying  Party. If the Indemnified  Party disputes the claim,  such dispute
shall  be  resolved  by  mutual  agreement  of the  Indemnified  Party  and  the
Indemnifying  Party or by binding  arbitration  conducted in accordance with the
procedures and rules of the American Arbitration Association.  Judgment upon any
award rendered by any arbitrators  may be entered in any court having  competent
jurisdiction thereof.

     12. GOVERNING LAW: MISCELLANEOUS.

     This Agreement  shall be governed by and interpreted in accordance with the
laws of the State of New York, without regard to the conflicts of law principles
of such state.  Each of the parties  consents to the jurisdiction of the federal
courts whose  districts  encompass any part of the City of New York or the state
courts of the State of New York  sitting  in the City of New York in  connection
with any dispute arising under this Agreement and hereby waives,  to the maximum
extent  permitted by law, any objection,  including any objection based on forum
non conveniens, to the bringing of any such proceeding in such jurisdictions.  A
facsimile  transmission  of this signed  Agreement shall be legal and binding on
all parties  hereto.  This Agreement may be signed in one or more  counterparts,
each of which shall be deemed an original.  The headings of this  Agreement  are
for  convenience  of  reference  and  shall  not form  part of,  or  affect  the
interpretation  of, this Agreement.  If any provision of this Agreement shall be
invalid   or   unenforceable   in   any   jurisdiction,   such   invalidity   or
unenforceability  shall  not  affect  the  validity  or  enforceability  of  the
remainder of this Agreement or the validity or  enforceability of this Agreement
in any other  jurisdiction.  This Agreement may be amended only by an instrument
in writing  signed by the party to be charged with  enforcement.  This Agreement
supersedes all prior agreements and understandings among the parties hereto with
respect to the subject matter hereof.

     13. NOTICES.  Any notice required or permitted  hereunder shall be given in
writing  (unless  otherwise  specified  herein) and shall be deemed  effectively
given upon personal  delivery or seven business days after deposit in the United
States  Postal  Service,  by (a) advance copy by fax, and (b) mailing by express
courier or registered or certified mail with postage and fees prepaid, addressed
to each of the other parties thereunto entitled at the following  addresses,  or
at such other  addresses as a party may  designate  by ten days advance  written
notice to each of the other parties hereto.

                                       24

<PAGE>

COMPANY:                   EARTH SCIENCES, INC.
                           910 12th Street
                           Golden, Colorado  80401
                           Attention: President
                           Telephone: (303) 292-6400
                           Fax: (303) 295-3040

                           with a copy to:

                           Parcel, Mauro, Hultin & Spaanstra
                           1801 California Street, Suite 3600
                           Denver, Colorado 80202
                           Attention: Scott Reid, Esq.
                           Telephone: (303) 292-6400
                           Fax: (303) 295-3040

BUYER:                     THE SHAAR FUND LTD.
                           Apartment 4F
                           62 King George Street
                           Jerusalem, Israel
                           Attention: Samuel Levinson
                           Telephone: 00-972-2-566-1144
                           Fax: 00-972-2-566-0424

ESCROW AGENT:              WEIL, GOTSHAL & MANGES LLP
                           767 Fifth Avenue
                           New York, New York  10153
                           Attention: Dennis J. Block, Esq.
                           Telephone: (212) 310-8000
                           Fax:              (212) 310-8007


     14.  CONFIDENTIALITY.  Each  of  the  Company  and  Buyer  agrees  to  keep
confidential  and not to  disclose  to or use for the benefit of any third party
the  terms  of this  Agreement  or any  other  information  which at any time is
communicated by the other party as being confidential  without the prior written
approval of the other party;  provided,  however,  that this provision shall not
apply to information  which,  at the time of disclosure,  is already part of the
public domain  (except by breach of this  Agreement)  and  information  which is
required to be disclosed by law.

     15.  ASSIGNMENT.  This  Agreement  shall not be assignable by either of the
parties  hereto prior to the Closing  without the prior  written  consent of the
other party,  and any attempted  assignment  contrary to the  provisions  hereby
shall be null and void; provided,  however, that Buyer may assign its rights and
obligations  hereunder,  in whole  or in part,  to any  affiliate  of Buyer  who
furnishes to the

                                       25

<PAGE>


Company the representations and warranties set forth in Section 2 hereof.






                                       26

<PAGE>


     IN WITNESS  WHEREOF,  the parties  hereto have duly  executed and delivered
this Agreement on the date first above written.

                                               EARTH SCIENCES, INC.


                                      By:      /s/ Mark H. McKinnies
                                              ---------------------------------
                                               Name:  Mark H. McKinnies
                                               Title: President


                                               THE SHAAR FUND LTD.


                                      By:      /s/ Jeremy Posen
                                              ---------------------------------
                                               Name:Jeremy Posen
                                               Title: Secretary


                                       27





EXHIBIT 10.9

                          REGISTRATION RIGHTS AGREEMENT


     REGISTRATION  RIGHTS  AGREEMENT  dated  this 21st day of March  1997  (this
"Agreement"),  between  EARTH  SCIENCES,  INC.,  a  Colorado  Corporation,  with
principal executive offices located at 910 12th Street,  Golden,  Colorado 80401
(the "Company"), and the undersigned (the "Initial Investor").

                              W I T N E S S E T H:

     WHEREAS,  upon the terms and subject to the  conditions  of the  Securities
Purchase  Agreement dated March 21, 1997,  between the Initial  Investor and the
Company (the "Securities Purchase  Agreement"),  the Company has agreed to issue
and sell to the Initial Investor $2,510,000 aggregate principal amount of its 4%
Convertible  Debentures due March 31, 1999 (the  "Debentures")  which,  upon the
terms and subject to the conditions thereof,  are convertible into shares of the
common stock, $.01 par value, of the Company (the "Common Stock"); and

     WHEREAS,  to induce  the  Initial  Investor  to  execute  and  deliver  the
Securities Purchase Agreement, the Company has agreed to provide with respect to
the Common Stock issued or issuable upon  conversion of the  Debentures  certain
registration rights under the Securities Act;

     NOW,  THEREFORE,  in consideration of the premises and the mutual covenants
contained  herein,  the parties  hereto,  intending to be legally bound,  hereby
agree as follows:

     1. Definitions.

     (a) As used in this Agreement, the following terms shall have the meanings:

                    (i)  "Affiliate"  of any  specified  Person  means any other
         Person who directly,  or indirectly through one or more intermediaries,
         is in control of, is  controlled  by, or is under common  control with,
         such specified  Person.  For purposes of this definition,  control of a
         Person means the power, directly or indirectly,  to direct or cause the
         direction of the management and policies of or otherwise; and the terms
         "controlling" and "controlled" have the respective meanings correlative
         to the foregoing.


                                        

<PAGE>

                   (ii)    "Commission" means the Securities and Exchange
         Commission.

                  (iii)  "Exchange  Act" means the  Securities  Exchange  Act of
         1934,  as  amended,  and the rules and  regulations  of the  Commission
         thereunder, or any similar successor statute.

                   (iv) "Investor" means the Initial Investor and any transferee
         or assignee of Registrable Securities who agrees to become bound by all
         of the  terms and  provisions  of this  Agreement  in  accordance  with
         Section 8 hereof.

                    (v) "Person" means any individual, partnership, corporation,
         limited liability  company,  joint stock company,  association,  trust,
         unincorporated  organization,  or a  government  or agency or political
         subdivision thereof.

                   (vi) "Prospectus"  means the prospectus  (including,  without
         limitation,  any preliminary  prospectus and any final prospectus filed
         pursuant  to Rule  424(b)  under  the  Securities  Act,  including  any
         prospectus  that  discloses  information   previously  omitted  from  a
         prospectus  filed as part of an  effective  registration  statement  in
         reliance  on Rule  430A  under  the  Securities  Act)  included  in the
         Registration  Statement,  as amended or  supplemented by any prospectus
         supplement  with respect to the terms of the offering of any portion of
         the Registrable Securities covered by the Registration Statement and by
         all other amendments and supplements to such prospectus,  including all
         material incorporated by reference in such prospectus and all documents
         filed  after  the date of such  prospectus  by the  Company  under  the
         Exchange Act and incorporated by reference therein.

                  (vii)  "Registrable  Securities" means the Common Stock issued
         or issuable upon conversion of the  Debentures;  provided,  however,  a
         share of Common  Stock shall  cease to be a  Registrable  Security  for
         purposes of this Agreement when it no longer is a Restricted Security.


                                        2

<PAGE>

                 (viii) "Registration  Statement" means a registration statement
         of the Company filed on an  appropriate  form under the  Securities Act
         providing  for the  registration  of, and the sale on a  continuous  or
         delayed  basis by the  holders  of, all of the  Registrable  Securities
         pursuant to Rule 415 under the Securities Act, including the Prospectus
         contained  therein and forming a part thereof,  any  amendments to such
         registration  statement and  supplements  to such  Prospectus,  and all
         exhibits  and  other  material   incorporated   by  reference  in  such
         registration statement.

                   (ix)  "Restricted  Security"  means any share of Common Stock
         issued or issuable upon  conversion of the  Debentures  except any such
         share  that  (i)  has  been   registered   pursuant  to  an   effective
         registration  statement  under the  Securities Act and sold in a manner
         contemplated by the Prospectus included in the Registration  Statement,
         (ii) has been  transferred in compliance with the resale  provisions of
         Rule 144 under the Securities Act (or any successor  provision thereto)
         or is  transferable  pursuant  to  paragraph  (k) of Rule 144 under the
         Securities Act (or any successor provision thereto), or (iii) otherwise
         has been  transferred  and a new share of Common  Stock not  subject to
         transfer restrictions under the Securities Act has been delivered by or
         on behalf of the Company.

                    (x)  "Securities  Act" means the  Securities Act of 1933, as
         amended, and the rules and regulations of the Commission thereunder, or
         any similar successor statute.

     (b) All  capitalized  terms used and not defined herein have the respective
meaning assigned to them in the Securities Purchase Agreement.

     2. Registration.

     (a) Filing and Effectiveness of Registration  Statement.  The Company shall
prepare  and file  with the  Commission  not  later  than the 30th day after the
Closing  Date, a  Registration  Statement  relating to the offer and sale of the
Registrable Securities and shall use its best efforts to cause the Commission to
declare  such  Registration  Statement  effective  under the  Securities  Act as
promptly as  practicable  but not later than 90 days after the Closing  Date (as
defined in the Securities  Purchase  Agreement),  assuming for purposes hereof a
Conversion Price under the Debentures of $1.50 per share.


                                        3

<PAGE>

     (b)  Underwritten  Offering.  If the  offering  pursuant to a  Registration
Statement contemplated by Section 2(a) hereof involves an underwritten offering,
the  Investors who hold a  majority-in-interest  of the  Registrable  Securities
subject to such  underwritten  offering shall have the right to select one legal
counsel to represent their interests,  and an investment banker (or bankers) and
manager (or managers) to administer the offering,  which  investment  banker (or
bankers)  or manager  (or  managers)  shall be  reasonably  satisfactory  to the
Company.  The  Investors who hold the  Registrable  Securities to be included in
such underwriting  shall pay all underwriting  discounts and commissions of such
investment  banker (or  bankers)  and  manager  (or  managers)  so  selected  in
accordance with this Section 2(b) with respect to their Registrable Securities.

     (c)  Registration  Default.  If the  Registration  Statement  covering  the
Registrable  Securities  required to be filed by the Company pursuant to Section
2(a) hereof is not declared  effective by the  Commission  within 120 days after
the Closing Date (the "Initial Date"),  then the Company shall make the payments
to the Initial Investor as provided in the next sentence.  The amount to be paid
by  the  Company  to  the  Initial  Investor  shall  be  determined  as of  each
Computation Date, and such amount shall be equal to 2% of the Purchase Price (as
defined in the Securities Purchase Agreement) from the Initial Date to the first
Computation  Date,  and 3% of the  Purchase  Price  for  each  Computation  Date
thereafter, calculated on a pro rata basis to the date on which the Registration
Statement is declared effective by the Commission (the "Periodic  Amount").  The
full  Periodic  Amount  shall be paid by the Company to the Initial  Investor by
wire  transfer  of  immediately  available  funds  within  three days after each
Computation Date.

     As used in this Section 2(c), "Computation Date" means the date which is 30
days after the Initial Date and, if the  Registration  Statement  required to be
filed by the Company  pursuant to Section 2(a) has not theretofore been declared
effective by the  Commission,  and each date which is 30 days after the previous
Computation Date until such Registration Statement is so declared effective.

     (d)  Eligibility  for Use of Form S-3. The Company agrees that at such time
as it meets all the  requirements  for the use of  Securities  Act  Registration

                                        4

<PAGE>

Statement on Form S-3 it shall file all reports and  information  required to be
filed  by it with the  Commission  in a timely  manner  and take all such  other
action so as to maintain such eligibility for the use of such form.

     (e) In the event the Current Market Price under the Debentures  declines to
$2.25,  the Company shall file an  additional  Registration  Statement  with the
Commission  for such  additional  number of  Registrable  Securities as would be
issuable upon  conversion  of the  Debentures,  in addition to those  previously
registered,  assuming a Conversion  Price of $.75 per share.  The Company  shall
prepare and file with the Commission not later than the 30th day  thereafter,  a
Registration  Statement  relating  to the  offer  and  sale of such  Registrable
Securities  and shall use its best  efforts to cause the  Commission  to declare
such  Registration  Statement  effective under the Securities Act as promptly as
practicable but not later than 60 days thereafter.

     3.  Obligations of the Company.  In connection with the registration of the
Registrable Securities, the Company shall:

     (a)  Promptly  (i) prepare  and file with the  Commission  such  amendments
(including   post-effective   amendments)  to  the  Registration  Statement  and
supplements  to the  Prospectus  as may be  necessary  to keep the  Registration
Statement  continuously  effective and in compliance  with the provisions of the
Securities  Act applicable  thereto so as to permit the Prospectus  forming part
thereof to be current and useable by  Investors  for resales of the  Registrable
Securities  for a period  of two years  from the date on which the  Registration
Statement is first declared  effective by the Commission (the "Effective  Time")
or such shorter period that will terminate when all the  Registrable  Securities
covered  by the  Registration  Statement  have been  sold  pursuant  thereto  in
accordance with the plan of distribution provided in the Prospectus, transferred
pursuant to Rule 144 under the  Securities  Act or  otherwise  transferred  in a
manner that  results in the delivery of new  securities  not subject to transfer
restrictions under the Securities Act (the "Registration  Period") and (ii) take
all  lawful  action  such that each of (A) the  Registration  Statement  and any
amendment  thereto  does  not,  when it  becomes  effective,  contain  an 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,  not misleading and
(B) the Prospectus  forming part of the  Registration  Statement,  and any

                                        5

<PAGE>

amendment or supplement  thereto,  does not at any time during the  Registration
Period  include  an  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.  Notwithstanding the foregoing  provisions of this Section 3(a), the
Company may, during the Registration  Period,  suspend the use of the Prospectus
for a period not to exceed 30 days (whether or not  consecutive) in any 12-month
period if the Board of  Directors of the Company  determines  in good faith that
because of valid business  reasons,  including pending mergers or other business
combination  transactions,  the planned  acquisition  or  divestiture of assets,
pending material  corporate  developments and similar events,  it is in the best
interests of the Company to suspend such use, and prior to or  contemporaneously
with suspending such use the Company  provides the Investors with written notice
of such suspension, which notice need not specify the nature of the event giving
rise to such suspension.  At the end of any such suspension  period, the Company
shall  provide the  Investors  with written  notice of the  termination  of such
suspension.

     (b) During the  Registration  Period,  comply  with the  provisions  of the
Securities Act with respect to the disposition of all Registrable  Securities of
the Company covered by the Registration Statement until such time as all of such
Registrable  Securities  have been disposed of in  accordance  with the intended
methods of disposition  by the Investors as set forth in the Prospectus  forming
part of the Registration Statement;

     (c) (i)  Prior  to the  filing  with  the  Commission  of any  Registration
Statement (including any amendments thereto) and the distribution or delivery of
any Prospectus (including any supplements thereto), provide draft copies thereof
to the  Investors  and  reflect  in such  documents  all  such  comments  as the
Investors  (and their  counsel)  reasonably may propose and (ii) furnish to each
Investor whose Registrable Securities are included in the Registration Statement
and its legal counsel identified to the Company,  (A) promptly after the same is
prepared and publicly distributed, filed with the Commission, or received by the
Company,  one copy of the  Registration  Statement,  each  Prospectus,  and each
amendment or supplement thereto, and (B) such number of copies of the Prospectus
and all amendments and supplements thereto and such other documents, as such

                                        6

<PAGE>

Investor may reasonably  request in order to facilitate  the  disposition of the
Registrable Securities owned by such Investor;

     (d) (i)  Register  and qualify the  Registrable  Securities  covered by the
Registration  Statement  under  such  securities  or  "blue  sky"  laws  of such
jurisdictions  as  the  Investors  who  hold  a   majority-in-interest   of  the
Registrable  Securities being offered reasonably request,  (ii) prepare and file
in such jurisdictions such amendments (including post-effective  amendments) and
supplements  to such  registrations  and  qualifications  as may be necessary to
maintain the effectiveness  thereof at all times during the Registration Period,
(iii) take all such other lawful  actions as may be  necessary to maintain  such
registrations and  qualifications in effect at all times during the Registration
Period,  and (iv) take all such other  lawful  actions  reasonably  necessary or
advisable to qualify the Registrable  Securities for sale in such jurisdictions;
provided,  however,  that  the  Company  shall  not be  required  in  connection
therewith  or as a  condition  thereto  to (A)  qualify  to do  business  in any
jurisdiction  where it would not  otherwise  be required to qualify but for this
Section 3(d), (B) subject itself to general taxation in any such jurisdiction or
(C) file a general consent to service of process in any such jurisdiction;

     (e) As promptly as practicable  after becoming aware of such event,  notify
each  Investor  of the  occurrence  of any  event,  as a  result  of  which  the
Prospectus included in the Registration  Statement,  as then in effect, includes
an  untrue  statement  of a  material  fact or omits 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,  and
promptly  prepare an amendment to the  Registration  Statement and supplement to
the  Prospectus  to correct such untrue  statement  or  omission,  and deliver a
number of copies of such  supplement  and  amendment  to each  Investor  as such
Investor may reasonably request;

     (f) As promptly as practicable  after becoming aware of such event,  notify
each Investor who holds  Registrable  Securities being sold (or, in the event of
an  underwritten  offering,  the managing  underwriters)  of the issuance by the
Commission  of any stop order or other  suspension of the  effectiveness  of the
Registration  Statement at the earliest possible time and take all lawful action
to effect  the  withdrawal,  recession  or  removal  of such stop order or other
suspension;

                                        7

<PAGE>

     (g) (i) Cause all the Registrable  Securities  covered by the  Registration
Statement  to be listed  on the  principal  national  securities  exchange,  and
included in an inter-dealer quotation system of a registered national securities
association, on or in which securities of the same class or series issued by the
Company are then listed or included;

     (h) Maintain a transfer agent and registrar,  which may be a single entity,
for  the  Registrable  Securities  not  later  than  the  effective  date of the
Registration Statement;

     (i)  Cooperate  with the Investors who hold  Registrable  Securities  being
offered to facilitate the timely  preparation and delivery of  certificates  for
the Registrable  Securities to be offered pursuant to the Registration Statement
and  enable  such  certificates  for the  Registrable  Securities  to be in such
denominations  or amounts,  as the case may be, as the Investors  reasonably may
request and registered in such names as the Investors may request;  and,  within
three business days after a Registration  Statement  which includes  Registrable
Securities  is declared  effective  by the  Commission,  deliver and cause legal
counsel  selected  by the  Company  to  deliver  to the  transfer  agent for the
Registrable   Securities  (with  copies  to  the  Investors  whose   Registrable
Securities  are  included  in  such   Registration   Statement)  an  appropriate
instruction and opinion of such counsel;

     (j) Take all such other lawful actions necessary to expedite and facilitate
the disposition by the Investors of their  Registrable  Securities in accordance
with the intended methods therefor provided in the Prospectus.

     (k) Make generally available to its securityholders as soon as practicable,
but in any event  not later  than 18  months  after (i) the  effective  date (as
defined in Rule 158(c) under the Securities Act) of the Registration  Statement,
(ii) the effective  date of each  post-effective  amendment to the  Registration
Statement,  and (iii) the date of each filing by the Company with the Commission
of its  Annual  Report on Form 10-K or 10-KSB,  as the case may be, an  earnings
statement of the Company and its  subsidiaries  complying  with Section 11(a) of
the  Securities Act and the rules and  regulations of the Commission  thereunder
(including, at the option of the Company, Rule 158);

                                        8

<PAGE>

     (l)  In  the  event  of  an  underwritten  offering,  promptly  include  or
incorporate  in a  Prospectus  supplement  or  post-effective  amendment  to the
Registration  Statement such information as the managers reasonably agree should
be included therein and to which the Company does not reasonably object and make
all required filings of such Prospectus  supplement or post-effective  amendment
as soon as  practicable  after it is  notified  of the matters to be included or
incorporated in such Prospectus supplement or post-effective amendment;

     (m)  Enter  into  such  customary  agreements  (including  an  underwriting
agreement in customary form in the event of an  underwritten  offering) and take
all such other lawful action to expedite and  facilitate  the  registration  and
disposition of the Registrable  Securities,  and in connection therewith,  if an
underwriting   agreement   is   entered   into,   cause  the  same  to   contain
indemnification  provisions and procedures  substantially identical to those set
forth in this Agreement;

     (n)  (i)  Make  reasonably  available  for  inspection  by  Investors,  any
underwriter  participating  in any  disposition  pursuant  to  the  Registration
Statement,  and  any  attorney,  accountant  or  other  agent  retained  by such
Investors or any such  underwriter  all relevant  financial  and other  records,
pertinent   corporate   documents   and   properties  of  the  Company  and  its
subsidiaries,  and (ii) cause the Company's officers, directors and employees to
supply  all  information  reasonably  requested  by such  Investors  or any such
underwriter,  attorney,  accountant or agent in connection with the Registration
Statement, in each case, as is customary for similar due diligence examinations;
provided,  however,  that  all  records,  information  and  documents  that  are
designated  in  writing  by  the  Company,   in  good  faith,  as  confidential,
proprietary  or containing  any material  non-public  information  shall be kept
confidential by such Investors and any such underwriter, attorney, accountant or
agent (pursuant to an appropriate  confidentiality  agreement in the case of any
such  holder or agent),  unless  such  disclosure  is made  pursuant to judicial
process in a court  proceeding  (after first  giving the Company an  opportunity
promptly  to seek a  protective  order  or  otherwise  limit  the  scope  of the
information  sought to be  disclosed)  or is required  by law, or such  records,
information or documents become available to the public generally or through a

                                        9

<PAGE>

third party not in violation of an accompanying  obligation of  confidentiality;
and provided further that, if the foregoing inspection and information gathering
would otherwise disrupt the Company's  conduct of its business,  such inspection
and information  gathering shall, to the maximum extent possible, be coordinated
on behalf of the Investors and the other parties entitled thereto by one firm of
counsel designed by and on behalf of the Investors and other parties;

     (o) In connection with any underwritten offering, make such representations
and warranties to the Investors  participating in such underwritten offering and
to the managers,  in form,  substance and scope as are  customarily  made by the
Company to underwriters in secondary underwritten offerings;

     (p) In  connection  with any  underwritten  offering,  obtain  opinions  of
counsel  to the  Company  (which  counsel  and  opinions  (in  form,  scope  and
substance)  shall be reasonably  satisfactory to the managers)  addressed to the
underwriters,  covering  such  matters as are  customarily  covered in  opinions
requested in secondary  underwritten  offerings and such other matters as may be
reasonably  requested  by the  managers  (it being agreed that the matters to be
covered by such opinions shall include,  without  limitation,  as of the date of
the opinion and as of the Effective Time of the  Registration  Statement or most
recent  post-effective  amendment thereto,  as the case may be, the absence from
the  Registration   Statement  and  the  Prospectus,   including  any  documents
incorporated by reference therein,  of an untrue statement of a material fact or
the omission of a material  fact  required to be stated  therein or necessary to
make the  statements  therein  (in the case of the  Prospectus,  in light of the
circumstances  under which they were made) not misleading,  subject to customary
limitations;

     (q) In connection  with any  underwritten  offering,  obtain "cold comfort"
letters and updates  thereof  from the  independent  public  accountants  of the
Company (and, if  necessary,  from the  independent  public  accountants  of any
subsidiary  of the Company or of any business  acquired by the Company,  in each
case for which  financial  statements and financial data are, or are required to
be,  included in the  Registration  Statement),  addressed  to each  underwriter
participating  in such  underwritten  offering (if such underwriter has provided
such letter,  representations  or documentation,  if any, required for such cold
comfort  letter to be so addressed),  in customary form and covering  matters of
the type  customarily  covered  in "cold  comfort"  letters in  connection  with
secondary underwritten offerings;


                                       10

<PAGE>

     (r) In connection with any  underwritten  offering,  deliver such documents
and certificates as may be reasonably required by the managers, if any.

     (s) In the event that any  broker-dealer  registered under the Exchange Act
shall  be an  "Affiliate"  (as  defined  in Rule  2729(b)(1)  of the  rules  and
regulations of the National  Association of Securities Dealers,  Inc. (the "NASD
Rules") (or any successor  provision thereto)) of the Company or has a "conflict
of interest" (as defined in Rule  2720(b)(7) of the NASD Rules (or any successor
provision  thereto)) and such broker-dealer  shall underwrite,  participate as a
member  of  an  underwriting  syndicate  or  selling  group  or  assist  in  the
distribution  of  any  Registrable   Securities   covered  by  the  Registration
Statement,  whether  as a  holder  of  such  Registrable  Securities  or  as  an
underwriter,  a  placement  or sales  agent or a broker  or  dealer  in  respect
thereof, or otherwise,  the Company shall assist such broker-dealer in complying
with the requirements of the NASD Rules, including,  without limitation,  by (A)
engaging a "qualified  independent  underwriter" (as defined in Rule 2720(b)(15)
of the NASD Rules (or any successor  provision  thereto)) to  participate in the
preparation  of  the  Registration   Statement   relating  to  such  Registrable
Securities,  to exercise usual standards of due diligence in respect thereof and
to recommend  the public  offering  price of such  Registrable  Securities,  (B)
indemnifying  such  qualified  independent  underwriter  to  the  extent  of the
indemnification of underwriters  provided in Section 5 hereof, and (C) providing
such  information  to such  broker-dealer  as may be  required in order for such
broker-dealer to comply with the requirements of the NASD Rules.

     4. Obligations of the Investors. In connection with the registration of the
Registrable Securities, the Investors shall have the following obligations:

     (a) It shall be a condition  precedent to the obligations of the Company to
complete  the  registration  pursuant  to this  Agreement  with  respect  to the
Registrable Securities of a particular Investor that such Investor shall furnish
to the Company such information  regarding  itself,  the Registrable  Securities
held by it and the intended method of disposition of the Registrable  Securities
held by it as shall be reasonably required to effect the registration of such

                                       11

<PAGE>

Registrable  Securities and shall execute such documents in connection with such
registration as the Company may reasonably request. As least seven days prior to
the first  anticipated  filing date of the Registration  Statement,  the Company
shall notify each  Investor of the  information  the Company  requires from each
such Investor (the "Requested  Information") if such Investor elects to have any
of its Registrable  Securities  included in the  Registration  Statement.  If at
least two business days prior to the anticipated filing date the Company has not
received  the  Requested   Information  from  an  Investor  (a   "Non-Responsive
Investor"),  then  the  Company  may  file the  Registration  Statement  without
including Registrable Securities of such Non-Responsive Investor;

     (b) Each Investor by its acceptance of the Registrable Securities agrees to
cooperate with the Company in connection  with the preparation and filing of the
Registration Statement hereunder,  unless such Investor has notified the Company
in writing of its election to exclude all of its Registrable Securities from the
Registration Statement; and

     (c) Each Investor  agrees that, upon receipt of any notice from the Company
of the occurrence of any event of the kind described in Section 3(e) or 3(f), it
shall immediately discontinue its disposition of Registrable Securities pursuant
to the Registration  Statement  covering such Registrable  Securities until such
Investor's  receipt of the  copies of the  supplemented  or  amended  Prospectus
contemplated  by Section 3(e) and, if so directed by the Company,  such Investor
shall  deliver to the Company (at the  expense of the  Company) or destroy  (and
deliver  to the  Company  a  certificate  of  destruction)  all  copies  in such
Investor's  possession,  of the Prospectus covering such Registrable  Securities
current at the time of receipt of such notice.

     5.  Expenses  of  Registration.   All  expenses,  other  than  underwriting
discounts and commissions, incurred in connection with registrations, filings or
qualifications  pursuant to Section 3, but including,  without  limitation,  all
registration,  listing,  and  qualifications  fees,  printing and  engraving and
accounting fees, and the fees and disbursements of counsel for the Company,  and
the fees of one firm of counsel to the holders of a majority-in-interest  of the
Registrable Securities shall be borne by the Company.

     6. Indemnification and Contribution.

                                       12

<PAGE>

     (a) The Company  shall  indemnify  and hold harmless each Investor and each
underwriter,   if  any,  which   facilitates   the  disposition  of  Registrable
Securities,  and each of their respective officers and directors and each person
who controls  such Investor or  underwriter  within the meaning of Section 15 of
the  Securities  Act or Section 20 of the  Exchange  Act (each such person being
sometimes  hereinafter referred to as an "Indemnified  Person") from and against
any losses,  claims,  damages or  liabilities,  joint or several,  to which such
Indemnified  Person may become  subject under the  Securities  Act or otherwise,
insofar as such losses,  claims,  damages or liabilities  (or actions in respect
thereof)  arise out of or are based upon an untrue  statement or alleged  untrue
statement  of a material  fact  contained  in any  Registration  Statement or an
omission or alleged  omission to state  therein a material  fact  required to be
stated therein or necessary to make the statements therein,  not misleading,  or
arise out of or are based upon an untrue  statement or alleged untrue  statement
of a  material  fact  contained  in any  Prospectus  or an  omission  or alleged
omission  to state  therein a material  fact  required  to be stated  therein or
necessary  to make the  statements  therein,  in the light of the  circumstances
under which they were made,  not  misleading;  and the Company  hereby agrees to
reimburse such Indemnified  Person for all legal and other expenses  incurred by
them in connection with  investigating  or defending any such action or claim as
and when such expenses are incurred;  provided,  however, that the Company shall
not be liable to any such Indemnified Person in any such case to the extent that
any such loss, claim,  damage or liability arises out of or is based upon (i) an
untrue  statement or alleged untrue statement made in, or an omission or alleged
omission from, such Registration Statement or Prospectus in reliance upon and in
conformity with written information furnished to the Company by such Indemnified
Person  expressly  for use therein or (ii) in the case of the  occurrence  of an
event of the type specified in Section 3(e), the use by the  Indemnified  Person
of an outdated or  defective  Prospectus  after the Company has provided to such
Indemnified  Person an updated  Prospectus  correcting  the untrue  statement or
alleged  untrue  statement or omission or alleged  omission  giving rise to such
loss, claim, damage or liability.

     (b)  Indemnification  by the  Investors  and  Underwriters.  Each  Investor
agrees,  as a consequence of the inclusion of any of its Registrable  Securities
in a Registration Statement, and each underwriter, if any, which facilitates the
disposition  of  Registrable   Securities  shall  agree,  as  a  consequence  of

                                       13

<PAGE>

facilitating  such  disposition  of  Registrable  Securities,  severally and not
jointly,  to  (i)  indemnify  and  hold  harmless  the  Company,  its  directors
(including any person who, with his or her consent, is named in the Registration
Statement  as a director  nominee of the  Company),  its  officers  who sign any
Registration  Statement and each person, if any, who controls the Company within
the  meaning  of either  Section 15 of the  Securities  Act or Section 20 of the
Exchange Act,  against any losses,  claims,  damages or liabilities to which the
Company or such other persons may become  subject,  under the  Securities Act or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect  thereof) arise out of or are based upon an untrue  statement or alleged
untrue statement of a material fact contained in such Registration  Statement or
Prospectus or arise out of or are based upon the omission or alleged omission to
state therein 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,  in the  case of the  Prospectus),  not  misleading,  in each  case to the
extent,  but only to the extent,  that such untrue  statement or alleged  untrue
statement  or omission  or alleged  omission  was made in  reliance  upon and in
conformity with written  information  furnished to the Company by such holder or
underwriter  expressly for use therein,  and (ii)  reimburse the Company for any
legal or other expenses incurred by the Company in connection with investigating
or defending any such action or claim as such expenses are incurred.

     (c) Notice of  Claims,  etc.  Promptly  after  receipt  by a party  seeking
indemnification  pursuant to this Section 6 (an "Indemnified  Party") of written
notice of any  investigation,  claim,  proceeding  or other action in respect of
which  indemnification is being sought (each, a "Claim"),  the Indemnified Party
promptly  shall notify the party against whom  indemnification  pursuant to this
Section  6 is  being  sought  (the  "Indemnifying  Party")  of the  commencement
thereof;  but the omission to so notify the Indemnifying Party shall not relieve
it from any  liability  that it  otherwise  may have to the  Indemnified  Party,
except to the extent that the  Indemnifying  Party is materially  prejudiced and
forfeits  substantive  rights  and  defenses  by  reason  of  such  failure.  In
connection  with any  Claim as to which  both  the  Indemnifying  Party  and the
Indemnified  Party are  parties,  the  Indemnifying  Party  shall be entitled to
assume the defense thereof. Notwithstanding the assumption of the defense of any
Claim by the Indemnifying  Party, the Indemnified  Party shall have the right to
employ separate legal counsel and to participate in the defense of such Claim,

                                       14

<PAGE>

and the Indemnifying Party shall bear the reasonable fees,  out-of-pocket  costs
and expenses of such  separate  legal counsel to the  Indemnified  Party if (and
only if): (x) the  Indemnifying  Party shall have agreed to pay such fees, costs
and  expenses,  (y) the  Indemnified  Party  and the  Indemnifying  Party  shall
reasonably have concluded that  representation  of the Indemnified  Party by the
Indemnifying  Party by the same legal  counsel would not be  appropriate  due to
actual or, as reasonably  determined by legal counsel to the Indemnified  Party,
potentially  differing  interests  between  such  parties in the  conduct of the
defense  of such  Claim,  or if there  may be legal  defenses  available  to the
Indemnified  Party that are in addition to or disparate from those  available to
the  Indemnifying  Party,  or (z) the  Indemnifying  Party  shall have failed to
employ legal counsel  reasonably  satisfactory to the Indemnified Party within a
reasonable period of time after notice of the commencement of such Claim. If the
Indemnified Party employs separate legal counsel in circumstances  other than as
described in clauses (x), (y) or (z) above, the fees, costs and expenses of such
legal counsel shall be borne  exclusively by the  Indemnified  Party.  Except as
provided above, the  Indemnifying  Party shall not, in connection with any Claim
in the same  jurisdiction,  be liable for the fees and expenses of more than one
firm of counsel for the  Indemnified  Party  (together  with  appropriate  local
counsel). The Indemnifying Party shall not, without the prior written consent of
the  Indemnifying  Party (which  consent  shall not  unreasonably  be withheld),
settle or compromise any Claim or consent to the entry of any judgment that does
not  include  an  unconditional  release  of the  Indemnifying  Party  from  all
liabilities with respect to such Claim or judgment.

     (d) Contribution.  If the indemnification provided for in this Section 6 is
unavailable  to or  insufficient  to hold harmless an  Indemnified  Person under
subsection  (a) or (b)  above in  respect  of any  losses,  claims,  damages  or
liabilities  (or actions in respect  thereof)  referred  to  therein,  then each
Indemnifying  Party  shall  contribute  to the  amount  paid or  payable by such
Indemnified Party as a result of such losses, claims, damages or liabilities (or
actions in respect  thereof) in such proportion as is appropriate to reflect the
relative fault of the Indemnifying Party and the Indemnified Party in connection
with the statements or omissions which resulted in such losses,  claims, damages
or liabilities  (or actions in respect  thereof);  as well as any other relevant
equitable  considerations.  The relative  fault of such  Indemnifying  Party and
Indemnified Party shall be determined by reference  to, among other things,

                                       15

<PAGE>

whether the untrue or alleged untrue statement of a material fact or omission or
alleged  omission to state a material  fact relates to  information  supplied by
such Indemnified  Party or by such Indemnified  Party, and the parties' relative
intent,  knowledge,  access to information and opportunity to correct or prevent
such  statement or omission.  The parties hereto agree that it would not be just
and equitable if  contribution  pursuant to this Section 6(d) were determined by
pro rata allocation (even if the Investors or any  underwriters  were treated as
one entity for such purpose) or by any other method of allocation which does not
take account of the equitable  considerations  referred to in this Section 6(d).
The amount  paid or payable by an  Indemnified  Party as a result of the losses,
claims, damages or liabilities (or actions in respect thereof) referred to above
shall be  deemed  to  include  any legal or other  fees or  expenses  reasonably
incurred by such indemnified party in connection with investigating or defending
any such  action or  claim.  No person  guilty of  fraudulent  misrepresentation
(within the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution   from  any  person   who  was  not   guilty  of  such   fraudulent
misrepresentation. The obligations of the Investors and any underwriters in this
Section 6(d) to contribute  shall be several in proportion to the  percentage of
Registrable  Securities registered or underwritten,  as the case may be, by them
and not joint.

     (e)  Notwithstanding  any other  provision  of this  Section 6, in no event
shall any (i)  Investor be required to  undertake  liability to any person under
this Section 6 for any amounts in excess of the dollar amount of the proceeds to
be  received  by such  Investor  from  the sale of such  Investor's  Registrable
Securities  (after  deducting  any fees,  discounts and  commissions  applicable
thereto)  pursuant to any  Registration  Statement under which such  Registrable
Securities are to be registered under the Securities Act and (ii) underwriter be
required  to  undertake  liability  to any Person  hereunder  for any amounts in
excess of the aggregate  discount,  commission or other compensation  payable to
such underwriter with respect to the Registrable  Securities  underwritten by it
and distributed pursuant to the Registration Statement.

     (f) The  obligations  of the  Company  under  this  Section  6 shall  be in
addition  to  any  liability  which  the  Company  may  otherwise  have  to  any
Indemnified  Person and the  obligations  of any  Indemnified  Person under this


                                       16

<PAGE>

Section 6 shall be in addition to any liability  which such  Indemnified  Person
may otherwise have to the Company.  The remedies  provided in this Section 6 are
not exclusive and shall not limit any rights or remedies  which may otherwise be
available to an indemnified party at law or in equity.

     7. Rule 144. With a view to making  available to the Investors the benefits
of Rule 144 under the  Securities Act or any other similar rule or regulation of
the Commission  that may at any time permit the Investors to sell  securities of
the Company to the public without  registration ("Rule 144"), the Company agrees
to:

     (a) comply with the provisions of paragraph (c)(1) of Rule 144; and

     (b) file with the  Commission  in a timely  manner  all  reports  and other
documents  required to be filed by the  Company  pursuant to Section 13 or 15(d)
under the Exchange Act; and

     8.  Assignment.  The  rights  to  have  the  Company  register  Registrable
Securities  pursuant to this Agreement  shall be  automatically  assigned by the
Investors to any transferee of all or any portion of such  securities (or all or
any portion of any  Debenture  of the  Company  which is  convertible  into such
securities)  of  Registrable  Securities  only if:  (a) the  Investor  agrees in
writing with the  transferee  or assignee to assign such  rights,  and a copy of
such agreement is furnished to the Company  within a reasonable  time after such
assignment,  (b) the Company is, within a reasonable time after such transfer or
assignment,  furnished  with written  notice of (i) the name and address of such
transferee  or  assignee  and (ii) the  securities  with  respect  to which such
registration rights are being transferred or assigned, (c) immediately following
such transfer or  assignment,  the  securities so transferred or assigned to the
transferee or assignee constitute  Restricted  Securities,  and (d) at or before
the time the Company  received the written notice  contemplated by clause (b) of
this sentence the  transferee or assignee  agrees in writing with the Company to
be bound by all of the provisions contained herein.

     9. Amendment and Waiver. Any provision of this Agreement may be amended and
the  observance  thereof  may be waived  (either  generally  or in a  particular
instance and either retroactively or prospectively), only with the written

                                       17

<PAGE>


consent of the  Company and  Investors  who hold a  majority-in-interest  of the
Registrable Securities. Any amendment or waiver effected in accordance with this
Section 9 shall be binding upon each Investor and the Company.

     10. Miscellaneous.

     (a) A person  or  entity  shall be  deemed  to be a holder  of  Registrable
Securities  whenever  such  person or entity  owns of  record  such  Registrable
Securities.  If  the  Company  receives  conflicting  instructions,  notices  or
elections  from  two or more  persons  or  entities  with  respect  to the  same
Registrable  Securities,  the Company shall act upon the basis of  instructions,
notice  or  election  received  from the  registered  owner of such  Registrable
Securities.

     (b) If,  after  the date  hereof,  the  Company  grants to any  Person  any
registration  Rights  with  respect  to any  Company  securities  which are more
favorable to such other Person than those provided in this  Agreement,  then the
Company  forthwith  shall grant (by means of an amendment  to this  Agreement or
otherwise) identical registration rights to all Investors hereunder.

     (c) Notices required or permitted to be given hereunder shall be in writing
and shall be deemed to be sufficiently given when personally delivered (by hand,
by courier, by telephone line facsimile transmission, receipt confirmed) or sent
by certified mail, return receipt requested,  properly addressed and with proper
postage  pre-paid  (i) if to the  Company,  to EARTH  SCIENCES,  INC.,  910 12th
Street,  Golden,  Colorado 80401 ATT: President,  with a copy to Parcel,  Mauro,
Hultin & Spaanstra,  1801 California Street, Suite 3600, Denver, Colorado 80202,
ATT: Scott Reid, Esq., (ii) if to the Initial Investor, at the address set forth
in the Securities Purchase Agreement and (iii) if to any other Investor, at such
address as such Investor  shall have  provided in writing to the Company,  or at
such other  address as each such party  furnishes by notice given in  accordance
with this Section 10(b), and shall be effective, when personally delivered, upon
receipt and,  when so sent by certified  mail,  four calendar days after deposit
with the United States Postal Service.

     (d)  Failure  of any  party to  exercise  any right or  remedy  under  this
Agreement or otherwise,  or delay by a party in exercising such right or remedy,
shall not operate as a waiver thereof.

                                       18

<PAGE>

     (e) This Agreement  shall be governed by and interpreted in accordance with
the  laws  of the  State  of New  York.  Each  of the  parties  consents  to the
jurisdiction  of the federal  courts whose  districts  encompass any part of the
City of New York or the state  courts of the  State of New York  sitting  in the
City of New York in connection with any dispute arising under this Agreement and
hereby waives,  to the maximum extent permitted by law, any objection  including
any  objection  based on  forum  non  conveniens,  to the  bringing  of any such
proceeding  in such  jurisdictions.  A  facsimile  transmission  of this  signed
Agreement shall be legal and binding on all parties  hereto.  This Agreement may
be  signed  in one or more  counterparts,  each of  which  shall  be  deemed  an
original.  The headings of this  Agreement are for  convenience of reference and
shall not form part of, or affect the interpretation of, this Agreement.  If any
provision  of  this  Agreement  shall  be  invalid  or   unenforceable   in  any
jurisdiction,  such invalidity or unenforceability shall not affect the validity
or  enforceability  of the  remainder  of  this  Agreement  or the  validity  or
enforceability of this Agreement in any other  jurisdiction.  This Agreement may
be amended only by an  instrument  in writing  signed by the party to be charged
with   enforcement.   This  Agreement   supersedes  all  prior   agreements  and
understandings  among the  parties  hereto with  respect to the  subject  matter
hereof.

     (f) This  Agreement  constitutes  the entire  agreement  among the  parties
hereto with respect to the subject  matter  hereof.  There are no  restrictions,
promises, warranties or undertakings,  other than those set forth or referred to
herein.  This Agreement  supersedes all prior agreements and undertakings  among
the parties hereto with respect to the subject matter hereof.

     (g) Subject to the  requirements of Section 9 hereof,  this Agreement shall
inure to the benefit of and be binding upon the  successors  and assigns of each
of the parties hereto.

     (h) All  pronouns  and  any  variations  thereof  refer  to the  masculine,
feminine or neuter, singular or plural, as the context may require.

     (i) The headings in this  Agreement are for  convenience  of reference only
and shall not limit or otherwise affect the meaning thereof.


                                       19

<PAGE>

     (j) The Company acknowledges that any failure by the Company to perform its
obligations  under Section 3, or any delay in such  performance  could result in
direct  damages to the Investors and the Company agrees that, in addition to any
other liability the Company may have by reason of any such failure or delay, the
Company shall be liable for all direct damages caused by such failure or delay.

     (k) This  Agreement  may be executed in two or more  counterparts,  each of
which shall be deemed an original but all of which shall  constitute one and the
same agreement.

     IN WITNESS  WHEREOF,  the parties  have caused  this  Agreement  to be duly
executed and delivered as of the date first above written.


                                   EARTH SCIENCES, INC.


                                   By:/s/ Mark H. McKinnies
                                      -----------------------------------------
                                      Name: Mark H. McKinnies
                                      Title: President


                                   THE SHAAR FUND LTD.


                                   By: /s/Jeremy Posen
                                      -----------------------------------------
                                       Name:  Jeremy Posen
                                       Title:  Secretary


                                       20



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