ARCH COAL INC
S-3, 1999-05-04
BITUMINOUS COAL & LIGNITE SURFACE MINING
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      As filed with the Securities and Exchange Commission on May 4, 1999
================================================================================
                              Registration No. 333-
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-3
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                                 ARCH COAL, INC.
             (Exact name of registrant as specified in its charter)

          Delaware                                     43-0921172
 (State or other jurisdiction of            (I.R.S. Employer Identification No.)
  incorporation or organization)

                            CityPlace One, Suite 300
                            St. Louis, Missouri 63141
                                 (314) 994-2700
               (Address, including zip code, and telephone number,
                 including area code, of registrant's principal
                               executive offices)

                                 Jeffry N. Quinn
                Senior Vice President - Law and Human Resources,
                         Secretary and General Counsel
                                 Arch Coal, Inc.
                            CityPlace One, Suite 300
                               St. Louis, Missouri 63141
                                 (314) 994-2700
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

     Approximate date of commencement of proposed sale to the public:
As soon as practicable after the effective date of this registration statement.

     If the only  securities  being  registered  on this Form are being  offered
pursuant to dividend or interest  reinvestment plans, please check the following
box |X|
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. |_|
     If this Form is filed to  register  additional  securities  for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. |_|
     If this Form is a  post-effective  amendment  filed pursuant to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
registration number of the earlier effective registration statement for the same
offering. |_|__________
     If delivery of the  prospectus is expected to be made pursuant to Rule 434,
please check the following box. |_|

                         CALCULATION OF REGISTRATION FEE
- --------------------------------------------------------------------------------
  Title of Each     Amount to be   Proposed       Proposed      Amount of
     Class of        Registered     Maximum        Maximum     Registration
 Securities to be                  Offering       Aggregate       Fee
    Registered                     Price Per      Offering
                                   Share (1)      Price(1)
- --------------------------------------------------------------------------------
Common Stock, par    2,000,000       $12        $24,000,000       $6,672
value of $.01 per     shares
share
- --------------------------------------------------------------------------------

(1)  Estimated  solely for the  purpose of  calculating  the  registration  fee;
     computed in accordance  with Rule 457(c) on the basis of the average of the
     high and low  sales  prices  for the  Common  Stock on  April  30,  1999 as
     reported on the New York Stock Exchange.


================================================================================

<PAGE>

================================================================================

Prospectus

                                 Arch Coal, Inc.
                         AUTOMATIC DIVIDEND REINVESTMENT
                             AND STOCK PURCHASE PLAN

      We are offering to holders of record of our Common Stock, to our employees
and to the employees of our  subsidiaries  the opportunity to purchase shares of
Common Stock through an Automatic Dividend Reinvestment and Stock Purchase Plan.
The shares of Common Stock purchased  under the Plan with  reinvested  dividends
will either be purchased on the open market or be newly issued (including shares
reacquired  and held for future  issuance)  as  determined  by us. The shares of
Common Stock  purchased  under the Plan with  voluntary  cash  payments  will be
purchased on the open market.  The Plan constitutes an amendment and restatement
of our  Automatic  Dividend  Reinvestment  Plan  previously  in  effect.  If you
currently  participate  in the  original  Plan,  you  will  remain  enrolled  in
accordance with the terms of this Prospectus  unless you instruct  EquiServe (as
defined  below)  to close  your  account  or to  alter  the  conditions  of your
participation.  We have  appointed  First  Chicago  Trust Company of New York to
originate and  administer the Plan and EquiServe  Limited  Partnership to act as
service agent. The appointed entities shall be collectively  referred to in this
Prospectus as "EquiServe."

      The Plan is  designed  to enable you to invest all or part of your  Common
Stock cash dividends  automatically  in additional  shares of Common Stock.  The
Plan also  permits you to purchase  shares of Common Stock with  voluntary  cash
investments, whether or not you reinvest your dividends. The Plan permits Common
Stock dividends to be reinvested beginning on any dividend payment date (usually
March 15, June 15,  September 15 and December 15) and voluntary cash payments to
be invested in Common  Stock  beginning on the 15th day of each month or as soon
as practicable  after such date (the "Investment  Dates"),  at a price per share
equal to:

     o    the  weighted  average  price per share of the shares of Common  Stock
          purchased for the month (for shares purchased in the open market) or

     o    the average of the high and low per share sales  prices for the Common
          Stock  reported  by  the  New  York  Stock  Exchange  ("NYSE")  on the
          Investment Date (for newly issued shares).

The  average of the high and low per share sales  prices of the Common  Stock as
reported by the NYSE on April 29, 1999 was $12 7/16.  No  brokerage  commissions
will be charged on newly issued shares of Common Stock purchased under the Plan,
and we will pay any brokerage commissions resulting from open market purchases.

      This Prospectus relates to 2,000,000 shares of Common Stock registered for
purchase. You should retain this Prospectus for future reference.

      Before  you  participate  in our  Plan,  you  should  consider  the  risks
discussed in "Risk Factors" beginning on page 3.

     Neither the  Securities and Exchange  Commission  nor any state  securities
commission has approved or  disapproved  of these  securities or passed upon the
adequacy or accuracy of this Prospectus. Any representation to the contrary is a
criminal offense.

                   The date of this Prospectus is May 4, 1999.


<PAGE>

                       WHERE YOU CAN FIND MORE INFORMATION

      We file annual,  quarterly and special reports, proxy statements and other
information  with the SEC. Our SEC filings are  available to the public over the
Internet  at the SEC's web site at  www.sec.gov.  You may also read and copy any
document  we file at the  SEC's  Public  Reference  Room,  located  at 450 Fifth
Street, N.W., Washington,  D.C. 20549. Please call the SEC at 1-800-SEC-0330 for
further  information  about the Public Reference Room. For information about us,
please visit our web site at www.archcoal.com.

      We  have  filed  a  registration  statement  on  Form  S-3  with  the  SEC
("Registration  Statement")  under the  Securities  Act of 1933 with  respect to
newly issued shares that may be purchased with  reinvested  dividends  under the
Plan.  This  Prospectus does not contain all of the information set forth in the
Registration Statement, certain portions of which the SEC permits us to omit. If
you would like to review those portions,  including  exhibits,  please visit the
SEC's web site or Public Reference Room, or call the SEC at the number mentioned
above.

      If we make statements in this Prospectus that refer to the contents of any
omitted documents,  such statements may be incomplete.  In those cases, we refer
you to the omitted  document for a more  complete  description.  Such  reference
modifies any statements made in this Prospectus.

                           INCORPORATION BY REFERENCE

      The SEC allows us to  "incorporate  by reference" the  information we file
with them,  which means that we can  disclose  important  information  to you by
referring you to those documents.  The information  incorporated by reference is
an important part of this  Prospectus,  and information  that we file later with
the SEC will automatically update and supersede this information.

      We incorporate by reference the documents and reports listed below and any
future  filings with the SEC under  Sections  13(a),  13(c),  14 or 15(d) of the
Securities  Exchange Act of 1934.  Future filings include filings made after the
date of this  Prospectus  and prior to the  termination  of the offering made by
this Prospectus. Documents incorporated by reference include the following:

     o    Annual  Report on Form 10-K for the  fiscal  year ended  December  31,
          1998;

     o    Current Report on Form 8-K dated March 9, 1999;

     o    Definitive Proxy Statement on Schedule 14A dated March 12, 1999; and

     o    The  description  of the Common Stock  contained  in our  registration
          statement on Form 8-B dated June 17, 1997.

      You may request a free copy of these filings,  other than exhibits (unless
such exhibits are specifically incorporated by reference into such documents) by
writing or telephoning us at the following address:

                                       2
<PAGE>

                                 General Counsel
                                 Arch Coal, Inc.
                            Suite 300, CityPlace One
                            St. Louis, Missouri 63141
                                 (314) 994-2700

                                  RISK FACTORS

      In  addition  to  the  other  information  contained  or  incorporated  by
reference in this Prospectus,  prospective  investors should consider  carefully
the following risk factors before making an investment in the Common Stock.

      This Prospectus  contains or  incorporates  by reference  statements by us
that constitute  forward-looking statements within the meaning of Section 27A of
the  Securities  Act of 1933 and Section 21E of the  Securities  Exchange Act of
1934.  All  statements  contained  in  this  Prospectus  and  in  the  documents
incorporated by reference  regarding prospects for our industry and our expected
future  financial  position,  results  of  operations,  cash  flows,  dividends,
business  strategy,   capital   expenditures,   competitive   position,   growth
opportunities  and intent,  belief,  objectives or current  expectations for the
future are forward-looking statements.

      When used in this  Prospectus or the documents  incorporated by reference,
terms  such  as  "anticipate,"   "believe,"   "estimate,"   "expect,"  "intend,"
"indicate,"  "may,"  "will,"  "objective,"  "plan" and "predict" are intended to
identify such statements.

      Forward-looking statements are based upon our management's expectations at
the time they are made and are inherently uncertain. Actual results could differ
materially from those anticipated in the forward-looking  statements as a result
of the risk factors set forth below and any other factors described in documents
filed by us with the SEC and incorporated by reference, many of which are beyond
our control.

Substantial Leverage; Variable Interest Rates; Restrictive Covenants

      We have substantial leverage, including significant debt service and lease
payment  obligations.  As of December 31, 1998, we had outstanding  consolidated
indebtedness  of  $1.4  billion,  representing  approximately  69% of our  total
capitalization.

      Our ability to satisfy our debt service and lease payment obligations will
depend upon the future operating performance of our subsidiaries,  which will be
affected by prevailing  economic conditions in their markets, as well financial,
business and other  factors,  certain of which are beyond their  control.  Based
upon current levels of operations, we believe that cash flow from operations and
available cash, together with available  borrowings under our credit facilities,
will be  adequate  to meet our  future  liquidity  needs  for at least  the next
several  years.  However,  we cannot  assure you that our business will generate
sufficient cash flow from operations or that future borrowings will be available
in an amount  sufficient to enable us to fund our debt service and lease payment
obligations or our other liquidity needs.

      The degree to which we are leveraged  could have material  consequences to
us and our business, including, but not limited to:

 
                                       3
<PAGE>


     o    making it more  difficult  for us to satisfy our debt  service,  lease
          payment and other obligations;
     o    increasing our  vulnerability to general adverse economic and industry
          conditions;
     o    limiting  our ability to obtain  additional  financing  to fund future
          acquisitions,  working capital,  capital expenditures or other general
          corporate requirements;
     o    reducing  the  availability  of  cash  flow  from  operations  to fund
          acquisitions,  working capital,  capital expenditures or other general
          corporate purposes;
     o    limiting our  flexibility  in planning for, or reacting to, changes in
          our business and the industry in which we compete; and
     o    placing us at a competitive  disadvantage when compared to competitors
          with less debt.

      A significant portion of our indebtedness bears interest at variable rates
that are linked to short-term  interest rates. If interest rates rise, our costs
relative to those obligations would also rise.

      Terms of our credit  facilities  and leases  contain  financial  and other
restrictive  covenants  that limit our  ability  to,  among  other  things,  pay
dividends,  effect acquisitions or dispositions and borrow additional funds, and
require us to, among other things,  maintain various financial ratios and comply
with  various  other  financial  covenants.  Our  failure  to  comply  with such
covenants  could  result in an event of default  which,  if not cured or waived,
would have a material adverse effect on us.

Environmental and Regulatory Factors

      Governmental  authorities  regulate the coal mining industry on matters as
diverse as:

     o    employee health and safety;
     o    air quality standards;
     o    water pollution;
     o    groundwater quality and availability;
     o    plant and wildlife  protection;
     o    the reclamation and restoration of mining properties; and
     o    the discharge of materials into the environment and surface subsidence
          from underground mining.

      In addition,  federal  legislation  mandates  certain benefits for various
retired coal miners  represented by the United Mine Workers of America ("UMWA").
These  regulations  and  legislation  have  had  and  will  continue  to  have a
significant effect on our costs of production and competitive position.

     Mining  companies  must obtain  permits that impose strict  regulations  on
various  environmental  and health and safety  matters in  connection  with coal
mining. Numerous permits are required for mining operations.

      We believe all permits required to conduct present mining  operations have
been obtained and that,  except as noted below,  upon the filing of the required
information with the appropriate  regulatory agencies, all permits necessary for
continuing operations will be obtained.  However, the regulatory  environment in
West  Virginia is changing with respect to current or future large scale surface
mines.

                                       4
<PAGE>

The Company currently operates four such mines in West Virginia. The issuance of
a permit at one of these mines, the Dal-Tex mine, to mine reserves contiguous to
its  existing   operation  has  been  enjoined.   See  "Information  About  Arch
Coal--Recent Developments."

      The remaining  three  operations,  under current mining plans, do not have
any  immediate  need for new  permits or the  renewal or  extension  of existing
permits.  Because the regulatory authorities have considerable discretion in the
timing of permit issuance and because both private individuals and the public at
large  possess  rights to  comment  on and  otherwise  engage in the  permitting
process,  including through intervention in the courts, no assurance can be made
that future  permits will be issued,  or if issued,  that such issuance would be
timely, or that permitting  requirements will not be changed or interpreted in a
manner adversely affecting us.

     The federal Clean Water Act affects coal mining operations in two principal
ways. First, the Army Corps of Engineers issues permits under Section 404 of the
Clean Water Act whenever a mine operator proposes to build a fill or impoundment
in U.S. waters. In addition,  the  Environmental  Protection Agency ("EPA") must
approve  the  issuance  by a  state  agency  of an  NPDES  ("National  Pollutant
Discharge Elimination System") permit. This NPDES permit encompasses storm water
discharges  from  a  mine  facility.  Regular  monitoring  and  compliance  with
reporting requirements and performance standards are conditions for the issuance
and renewal of NPDES permits governing pollutant discharge.  All states in which
our subsidiaries operate also have laws restricting discharge of pollutants into
state waters.

      New legislation,  regulations or orders may be adopted or become effective
which may  adversely  affect our mining  operations  or cost  structure,  or the
ability of our customers to use coal. New legislation, regulations or orders may
also require us to incur increased costs or to change operations  significantly.
These factors could have a material  adverse effect on our business,  results of
operations and financial condition.

      The federal  Clean Air Act requires  utilities  that  currently  are major
sources of nitrous  oxide in moderate or higher  ozone  non-attainment  areas to
install reasonably  available control technology for nitrous oxide. In addition,
we expect the EPA to implement stricter ozone standards by 2003.

      The Ozone Transport Assessment Group formed to make recommendations to the
EPA for  addressing  ozone  problems  in the eastern  U.S.  Based on the group's
recommendations,  the EPA  announced  a proposal  that would  require 22 eastern
states,  including  states in which many of our customers  are located,  to make
substantial  reductions in nitrous oxide emissions.  The EPA expects that states
will achieve these  reductions by requiring power plants to reduce their nitrous
oxide emissions by an average of 85%.

      Installation  of reasonably  available  control  technology and additional
control measures required under the proposal will make it more costly to operate
coal-fired utility power plants and, depending on the requirements of individual
state  attainment  plans and the  development of revised new

                                       5
<PAGE>


source performance standards, could make coal a less attractive fuel alternative
in the planning and building of utility power plants in the future.

      Any reduction in coal's share of the capacity for power  generation  could
have a  material  adverse  effect on our  financial  condition  and  results  of
operations.  The effect of such legislation or regulation,  or other legislation
that may be enacted in the future,  on the coal industry in general and on us in
particular  cannot be predicted with certainty.  Although a large portion of our
coal reserves are comprised of compliance and low-sulfur  coal, we cannot assure
you  that the  implementation  of the  Clean  Air Act or any  future  regulatory
provisions will not materially adversely affect us.

      On December  11,  1997,  U.S.  government  representatives  at the climate
change  negotiations  in  Kyoto,  Japan,  agreed  to  reduce  the  emissions  of
greenhouse  gas  (including  carbon  dioxide  and other gas  emissions  that are
believed to be trapping heat in the atmosphere and warming the earth's  climate)
in the U.S.  The U.S.  adoption  of the  requirements  of the Kyoto  protocol is
subject to conditions which may not occur, and is also subject to the protocol's
ratification by the U.S. Senate.  The U.S. Senate has indicated that it will not
ratify an agreement unless certain conditions, not currently provided for in the
Kyoto protocol,  are met. At present,  it is not possible to predict whether the
Kyoto  protocol  will  attain the force of law in the United  States or what its
impact  would be on us.  Further  developments  in  connection  with  the  Kyoto
protocol  could  adversely  affect  our  financial   condition  and  results  of
operations.

Reserve Degradation and Depletion

     Our  profitability  depends  substantially  on our  ability  to  mine  coal
reserves that have the geologic  characteristics that enable them to be mined at
competitive costs. We cannot assure you that replacement reserves,  particularly
in Central  Appalachia,  will be available when required or, if available,  that
such   replacement   reserves  can  be  mined  at  costs   comparable  to  those
characteristic  of the  depleting  mines.  Exhaustion  of reserves at particular
mines  can  also  have  an  adverse   effect  on   operating   results  that  is
disproportionate  to the percentage of overall  production and operating  income
represented  by such mines.  Our Mingo Logan  Mountaineer  Mine is  estimated to
exhaust its longwall  mineable  reserves in 2002. The Mountaineer Mine generated
$77.8 million or 89% of our total operating income in 1998.

Reliance on and Terms of Long-Term Coal Supply Contracts

     We sell a substantial  portion of our coal production pursuant to long-term
coal supply agreements, and as a consequence,  we may experience fluctuations in
operating  results  due to the  expiration  or  termination  of, or sales  price
redeterminations   or  suspensions  of  deliveries   under,   such  coal  supply
agreements.  Other short and long-term contracts define base or optional tonnage
requirements by reference to the customer's  requirements,  which are subject to
change  as a  result  of  factors  beyond  our  (and in  certain  instances  the
customer's) control, including utility deregulation.

      In  addition,  certain  price  adjustment  provisions  permit  a  periodic
increase or

                                       6
<PAGE>

decrease in the contract price to reflect  increases and decreases in production
costs,  changes in specified  price indices or items such as taxes or royalties.
Price reopener  provisions  provide for an upward or downward  adjustment in the
contract price based on market factors.  We have from time to time  renegotiated
contracts after execution to extend the contract term or to accommodate changing
market conditions.

      The contracts also typically  include  stringent  minimum and maximum coal
quality specifications and penalty or termination provisions for failure to meet
such   specifications  and  force  majeure  provisions  allowing  suspension  of
performance  or termination by the parties during the duration of certain events
beyond  the  control  of the  affected  party.  Contracts  occasionally  include
provisions that permit a utility to terminate the contract if changes in the law
make it illegal or  uneconomical  for the  utility to consume our coal or if the
utility has unexpected difficulties in utilizing our coal.

      Imposition of new nitrous oxide emissions  limits in connection with Phase
II of the Clean Air Act in 2000 could result in price adjustments or in affected
utilities seeking to terminate or modify long-term contracts in reliance on such
termination  provisions.  If the parties to any long-term contracts with us were
to modify, suspend or terminate those contracts,  we could be adversely affected
to the extent that we are unable to find  alternative  customers at a similar or
higher level of profitability.

      From time to time,  disputes  with  customers  may arise  under  long-term
contracts relating to, among other things,  coal quality,  pricing and quantity.
We may thus become involved in arbitration and legal  proceedings  regarding our
long-term  contracts.  We cannot assure you that we will be able to resolve such
disputes in a satisfactory manner.

      Although we cannot  predict  changes in our costs of  production  and coal
prices with certainty,  we believe that in the current  economic  environment of
low to  moderate  inflation,  the  price  adjustment  provisions  in  our  older
long-term  contracts  will largely offset changes in the costs of providing coal
under  those   contracts,   except  for  those  costs   related  to  changes  in
productivity.  However,  the increasingly short terms of sales contracts and the
consequent absence of price adjustment provisions in such contracts also make it
more likely that inflation-related increases in mining costs during the contract
term will not be recovered by us through a later price adjustment.

Potential Fluctuations in Operating Results; Seasonality

      We may experience  significant  fluctuations  in operating  results in the
future,  both on an  annual  and  quarterly  basis,  as a result  of one or more
factors beyond our control, including:

     o    expiration  or  termination  of, or sales  price  redeterminations  or
          suspensions of deliveries under, coal supply agreements;  
     o    disruption of transportation services;
     o    changes in mine operating conditions;
     o    changes in laws or regulations, including permitting requirements;  
     o    unexpected results in litigation;

                                       7
<PAGE>


     o    work stoppages or other labor difficulties;
     o    competitive and overall coal market conditions; and
     o    general economic conditions.

      Our mining  operations also are subject to factors beyond our control that
can negatively or positively affect the level of production and thus the cost of
mining at particular  mines for varying  lengths of time.  These factors include
weather conditions, equipment replacement and repair requirements; variations in
coal seam thickness, amount of overburden, rock and other natural materials; and
other surface or  subsurface  conditions.  Such  production  factors  frequently
result in significant fluctuations in operating results.

      Third quarter results of operations are frequently  adversely  affected by
lower production and resultant higher costs due to scheduled vacation periods at
the majority of our mines.  In addition,  costs are  typically  somewhat  higher
during vacation periods because of maintenance  activity carried on during those
periods.  These adverse effects may make the third quarter not comparable to the
other quarters and not indicative of results to be expected for the full year.

Certain Contractual Arrangements

      Arch Western  Resources,  LLC owns the coal reserves and operating  assets
acquired  in  the  Arch  Western   transaction   described   under  the  caption
"Information  About Arch  Coal"  below.  The  agreement  pursuant  to which Arch
Western was formed provides that one of our subsidiaries, as the managing member
of Arch Western,  generally has exclusive power and authority to conduct, manage
and control the business of Arch Western.  However,  if Arch Western at the time
has a debt rating less favorable than Ba3 from Moody's  Investors Service or BB-
from  Standard  &  Poors  Ratings  Group  or does  not  meet  certain  specified
indebtedness  and interest  coverage  ratios,  then a proposal that Arch Western
make certain  distributions,  incur  indebtedness,  sell  properties or merge or
consolidate  with any other person would  require the consent of all the members
of Arch Western.

      In  connection  with the Arch  Western  transaction,  we  entered  into an
agreement  pursuant  to which we agreed to  indemnify  the other  member of Arch
Western against certain tax liabilities in the event that such liabilities arise
as a result of certain  actions taken prior to June 1, 2013,  including the sale
or other  disposition of certain  properties of Arch Western,  the repurchase of
certain equity  interests in Arch Western by Arch Western or the reduction under
certain  circumstances  of  indebtedness  incurred by Arch Western in connection
with the  Arch  Western  transaction.  Depending  on the time at which  any such
indemnification  obligation  were to arise,  it could  have a  material  adverse
effect on our business, results of operations and financial condition.

      The membership interests in Canyon Fuel Company,  LLC, a limited liability
company,  are  owned  65% by Arch  Western  and 35% by a  subsidiary  of  ITOCHU
Corporation, a Japanese corporation.  The agreement which governs the management
and  operations  of Canyon Fuel  provides for a  Management  Board to manage its
business and affairs.  Generally,  the Management Board acts by affirmative vote
of the  representatives  of 

                                       8
<PAGE>


the members holding more than 50% of the membership interests.  However, certain
actions require either the unanimous  approval of the members or the approval of
representatives  of members  holding more than 70% of the membership  interests.
The Canyon Fuel agreement also contains various  restrictions on the transfer of
membership interests in Canyon Fuel.

      Ashland Inc.  currently owns  approximately 57% of our outstanding  Common
Stock. Pursuant to a stockholders  agreement among us, Ashland and Carboex S.A.,
we have agreed to nominate for election as a director,  a person  designated  by
Carboex,  and Ashland has agreed to vote its shares of Common  Stock in a manner
sufficient  to cause  the  election  of such  nominee,  in each case for so long
(subject to earlier  termination in certain  circumstances)  as shares of Common
Stock  owned by Carboex  represent  at least 63% of the  shares of Common  Stock
acquired by Carboex in our merger with Ashland  Coal,  Inc. In addition,  for so
long as the various  trusts for the benefit of descendants of H.L. and Lyda Hunt
and various  corporations owned by trusts for the benefit of descendants of H.L.
and Lyda Hunt  (collectively,  the "Hunt  Entities") have the collective  voting
power to elect by cumulative voting one or more persons to serve on our Board of
Directors,  we have agreed to nominate for election as directors  that number of
persons  designated by certain of the Hunt Entities that could be elected to the
Board by the Hunt Entities by exercise of such cumulative voting power.

      Our Restated Certificate of Incorporation requires the affirmative vote of
the holders of at least two-thirds of outstanding Common Stock voting thereon to
approve  a  merger  or  consolidation  and  certain  other  fundamental  actions
involving  or  affecting  control  of  the  company.   Our  Bylaws  require  the
affirmative vote of at least two-thirds of the members of our Board of Directors
in order to declare dividends and to authorize certain other actions.

Transportation

      The coal industry depends on rail,  trucking and barge  transportation  to
deliver  shipments  of coal to  customers.  Disruption  of these  transportation
services  could  temporarily  impair our ability to supply coal to our customers
and thus  adversely  affect our business  and  operating  results.  In addition,
transportation  costs  make up a  significant  component  of the  total  cost of
supplying  coal to  customers  and can affect  significantly  a coal  producer's
competitive position and profitability.  Increases in our transportation  costs,
or changes in such costs relative to transportation  costs incurred by providers
of  competing  coal or of other  fuels,  could  have an  adverse  effect  on our
business and results of operations.

Importance of Acquisitions and Related Risks

      We have grown, in part,  through the  acquisition of coal companies,  coal
properties,  coal leases and related assets,  and management  believes that such
acquisitions will continue to be important to us. Acquisitions  involve a number
of special risks,  including  possible adverse effects on our operating results,
diversion of management's  attention,  failure to retain key acquired personnel,
risks  associated with  unanticipated  events or liabilities and 

                                       9
<PAGE>

difficulties in the  assimilation  of the operations of the acquired  companies,
some or all of which  could  have a  material  adverse  effect on our  business,
results of operations and financial condition. We cannot assure you that we will
be  successful  in  the  development  of  such  acquisitions  or  that  acquired
operations will achieve anticipated benefits to us.

Reliance on Estimates of Reserves; Title

      There are numerous  uncertainties  inherent in  estimating  quantities  of
recoverable  reserves,  including many factors beyond our control.  Estimates of
economically  recoverable  coal reserves and net cash flows  necessarily  depend
upon the number of variable factors and assumptions, such as:

     o    geological and mining conditions (which may not be fully identified by
          available  exploration  data and/or differ from  experience in current
          operations);
     o    historical  production  from the area  compared with  production  from
          other producing areas;
     o    the  assumed  effects  of  regulation  by  governmental  agencies  and
          assumptions concerning coal prices;
     o    operating costs;
     o    severance and excise taxes; and
     o    development costs and reclamation costs.

     All of these factors may cause estimates to vary  considerably  from actual
results. For these reasons, estimates of the economically recoverable quantities
attributable  to any  particular  group of properties,  classifications  of such
reserves  based on risk of recovery  and  estimates  of net cash flows  expected
therefrom prepared by different  engineers or by the same engineers at different
times may vary  substantially.  Actual coal tonnage  recovered  from  identified
reserve areas or properties,  and revenues and expenditures  with respect to our
reserves  may vary  from  estimates,  and such  variances  may be  material.  No
assurance can be given that these  estimates  are an accurate  reflection of our
actual reserves.

      Most of our mining  operations are conducted on properties owned or leased
by us. The loss of any lease could  adversely  affect our ability to develop the
applicable reserves.  Because title to most of our leased properties and mineral
rights is not  thoroughly  verified until a permit is being obtained to mine the
property, our right to mine certain of our reserves may be adversely affected if
defects in title or  boundaries  exist.  In addition,  there can be no assurance
that we can successfully negotiate new leases or mining contracts for properties
containing additional reserves or maintain our leasehold interests in properties
on which mining operations are not commenced during the term of the lease.

Management of Growth

      As a result of the Arch Western  transaction,  we have  experienced  rapid
growth that has placed and is expected to continue to place a significant strain
on our  management,  operations  and other  resources.  Our future  success will
depend in part on our ability to successfully  integrate the operations acquired
in the Arch Western  transaction and to attract and retain qualified  personnel.
The failure to obtain needed personnel or to 

                                       10
<PAGE>


implement  management,  operating or financial systems necessary to successfully
integrate  acquired  operations  or otherwise  manage  growth when and as needed
could have a material adverse effect on our business,  results of operations and
financial condition.

Year 2000 Readiness Disclosure

      Computer  programs used by us for financial and  operational  purposes are
being  reprogrammed to be "Year 2000" compliant.  The "Year 2000 problem" exists
because many existing computer programs and embedded chip  microprocessors  were
programmed  to read the "00" in a year  2000  entry  as  1900,  or will  fail to
recognize "00" as a date at all. Failure to read the date properly or at all may
cause  miscalculations,  or simply cause the program or  microprocessor  to send
errant commands or cease functioning.

      Assessment/Remediation  Plan - We began our  assessment of our exposure to
the Year 2000 problem  prior to our merger with Ashland Coal in 1997,  when,  in
connection  with the necessary  integration  of the two  companies'  information
services technology,  a comprehensive plan for achieving an internal information
services system free of Year 2000 concerns was adopted.  Implementation  of this
plan  commenced  upon  consummation  of this merger,  and  essentially  required
company-wide  replacement  of  key  financial,   informational  and  operational
computer systems with  standardized  equipment and programs that were programmed
to properly process year 2000 entries.  The plan for  standardizing key internal
systems  was  modified  to  incorporate  the key  internal  information  systems
acquired in the Arch Western transaction.

      In April  1998,  we  implemented  the first phase of our Year 2000 plan by
installing a new Oracle  General  Ledger  running on Year 2000 compliant HP 9000
servers and operating  systems.  In October 1998, we implemented  Oracle's Human
Resource  System and in March 1999 we began  implementing  a new Oracle  Payroll
System.  We  anticipate  that the  payroll  system  will be  implemented  at all
locations by September 30, 1999. We began installation of Mincom Inc. systems in
July 1998 to replace  non-compliant  purchasing,  inventory and accounts payable
systems.  The scheduled  completion for  installation of these Mincom systems at
all of our mining locations is October 31, 1999. All desktop computers,  network
devices and related  software  are being  tested and are  replaced if there is a
Year  2000  problem.  We  have  standardized  Windows  95,  Office  95,  and  NT
file/printer servers, effective in October 1998.

      We began the process of evaluating potential Year 2000 problems within our
mining and processing equipment and within our systems and processes interfacing
with, and hence dependent upon, third party systems, in late 1997. The effort to
identify potential Year 2000 problems within our mining and processing equipment
and in our interfaces with third parties is ongoing.  When complete,  customers,
financial institutions,  vendors,  manufacturers,  transportation  companies and
others with whom we conduct business and where the interruption of such business
could have a material adverse affect on us will be contacted, and cost effective
efforts made to remediate or minimize possible problems.

                                       11
<PAGE>


      Assuming the  cooperation of third parties in connection with our efforts,
we believe that we will be able to complete our  assessment of material  adverse
risk associated  with Year 2000 problems in our mining and processing  equipment
and within such third party  systems and  processes  sufficiently  in advance of
January 1, 2000, to effect  remedial  measures  where such measures are possible
and cost effective. We are in the process of finalizing our assessment,  and the
target date for completing any remedial measures is July 31, 1999.

      Costs of Plan - To date,  we have expended  approximately  $7.5 million of
the total estimated $9.5 million required to eliminate Year 2000 concerns within
our  internal  information  systems.  The  total  costs  include  not  only  the
elimination  of  Year  2000  concerns,   but  included  in  the  costs  are  new
state-of-the-art  systems and costs  addressing  the Year 2000  concerns for the
newly  acquired  operations  in the Arch  Western  transaction.  The cost of the
project is based on management's  best estimates,  and we cannot assure you that
these estimates will be achieved. Pending completion of the assessment of mining
and  processing  equipment and third party system and processes  risk, no amount
can be reasonably estimated for remediation in these areas.

      Year  2000  Risk - The risks  posed to us by the Year  2000  problems  are
difficult to quantify with certainty.  Our Year 2000 plan for  reconfiguring and
standardizing  internal  information  systems  to  properly  process  Year  2000
information  depends upon several  factors beyond our immediate  control.  These
factors  include,  for  example,  retention of  qualified  information  services
personnel in a highly  competitive  labor market and integrity of local and long
distance carriers' Year 2000 telecommunication networks, which will be necessary
for  operation  of our wide area  network.  In  addition,  while  the  estimated
completion date of our  reconfiguration  efforts will permit some testing of the
internal systems, the schedule would not likely give us adequate time to address
defects  in the  system's  Year 2000  processing  if  vendors'  or  consultants'
warranties with respect to the new systems are not true.

      The  unavailability  of our internal  information  systems for a sustained
period  would have an  adverse  affect on us.  Depending  upon the nature of the
unavailability  of our internal  information  systems,  the adverse effect on us
could be material.

      With  respect to our  mining  and  processing  equipment,  we believe  the
greatest  risk posed is that any of our  multitude of sampling,  processing  and
loading  equipment at our mines,  loadouts and terminals ceases to function as a
result of a processing  error not identified  and/or corrected in our assessment
and  remediation  plan.  Such  failures  could result in breaches in or defaults
under our coal sales contracts (some of which contain prices substantially above
current  market).  Termination of certain or multiple coal sales contracts could
have an adverse  effect on us, and  depending  on the  contracts  involved,  the
adverse effect on us could be material.

      Finally,  we  believe  the  greatest  Year  2000  risks  are  posed by our
interfaces with third party services,  systems and processes.  Chief among these
risks are the loss of electrical power or transportation  

                                       12
<PAGE>

services  at mine sites where we are captive to a single  service  provider  and
alternatives are unavailable or economically  impractical.  Loss of service from
any of these  single  service  providers  would  have an  adverse  affect on us.
Depending upon the nature of the loss of service, the adverse effect on us could
be material.

      Contingency  Plans - We have  begun to develop  contingency  plans for key
internal  projects that, if delayed,  could prevent certain mine operations from
gaining access to Year 2000-compliant systems. Likewise, following the Year 2000
assessment of our customers and third party providers of goods and services,  we
will determine from information that we have received through correspondence and
personal  contact  that  if  a  company's  Year  2000  remediation  efforts  are
incomplete and the consequence is materially  adverse,  then  contingency  plans
will be developed if economically reasonable.

Factors Routinely Affecting Results of Operations

      Any one or a combination of the following factors may occur at times or in
a manner that causes results of our operations to deviate from expectations:

     o    changing demand;
     o    fluctuating selling prices;
     o    contract penalties, suspensions or terminations;
     o    operational, geologic, transportation and weather-related factors;
     o    unexpected regulatory changes;
     o    results of litigation; or
     o    labor disruptions.

      Any event disrupting  substantially all production at any of our principal
mines for a prolonged  period  would have a  significant  adverse  effect on our
current and projected results of operations.  The effect of such a disruption at
our Mingo Logan  operations  would be  particularly  severe  because of the high
volume of coal produced by those operations and the relatively high contribution
to operating income from the sale of such coal.

                           INFORMATION ABOUT ARCH COAL

General

      We are the second  largest coal  producer in the United  States.  We mine,
process and market  primarily  compliance and  low-sulfur  coal from 40 surface,
underground  and  auger  mines  located  in  western,  central  Appalachian  and
midwestern  United States coal fields.  Compliance and  low-sulfur  coal is coal
that, when burned, emits 1.2 pounds and 1.6 pounds or less of sulfur dioxide per
million Btu. As of December 31, 1998,  we controlled  approximately  3.7 billion
tons of measured and indicated coal reserves, of which approximately 1.9 billion
tons were located in coal fields in the western United States,  1.4 billion tons
were  located  in coal  fields  in  central  Appalachia,  and the  remainder  in
midwestern coal fields.

      On June 1, 1998, Arch Western, in which we own a 99% membership  interest,
acquired the United States coal operations of Atlantic  Richfield Company ("Arch
Western transaction"). The principal operating units of Arch Western are Thunder
Basin Coal  Company,  L.L.C.,  which  operates the Black  Thunder and Coal Creek
mines in the Southern  Powder  River Basin in Wyoming;  Mountain  Coal  

                                       13
<PAGE>


Company,  L.L.C.,  which  operates  the West Elk mine in  Colorado;  Canyon Fuel
Company,  LLC, which  operates  three mines in Utah;  and Arch of Wyoming,  LLC,
which operates two coal mines in the Carbon Basin of Wyoming.  Arch Western owns
a 65%  membership  interest in Canyon Fuel,  with the remaining  35%  membership
interest owned by a subsidiary of ITOCHU Corporation, a Japanese corporation.

      We and our  independent  operating  subsidiaries,  excluding  Canyon  Fuel
Company, LLC, sold approximately 81.1 million tons of coal in 1998, 75.8 million
tons of which were  produced  by us and the  balance of which was  acquired  for
resale.  Approximately  76% of this tonnage was sold under  long-term  contracts
having a term  greater than one year and the balance was sold on the spot market
(contracts  having  a term of year or  less).  Approximately  78% of 1998  total
revenues  was derived  from sales of coal under  long-term  contracts.  Sales of
metallurgical  coal in 1998 totaled 2.8 million tons, or approximately 5% of our
1998  coal  sales.  In  1998,  sales  of  coal  in  the  export  market  totaled
approximately  3.7 million tons. Sales of steam coal accounted for approximately
60% of these export sales,  while the balance of export sales consisted of sales
of metallurgical coal.

Recent Developments

      On March 29,  1999,  the  Company  agreed  to  transfer  to a third  party
approximately  35 million tons of the  estimated 412 million tons of coal leased
by a subsidiary  of the Company  under a federal  coal lease (the  "Thundercloud
Lease")  entered into by the Company in late 1998. The Company will receive cash
consideration of $12.2 million and access to certain environmental data relating
to the Thundercloud Lease in consideration for the transfer of the reserves.

      On March 3,  1999,  the  United  States  District  Court for the  Southern
District of West  Virginia  issued a preliminary  injunction  enjoining the Army
Corps of  Engineers  from  issuing a permit  for our  Dal-Tex  mine known as the
Spruce Fork Permit. Due to the delay in obtaining permits which will result from
the entry of the preliminary injunction,  on March 6, 1999, Dal-Tex announced it
will idle the mine and lay off approximately 250 employees by mid-July.  A trial
on the merits is scheduled for July 1999.

     In March 1999, a coal supply  agreement,  which was acquired as part of the
Arch  Western  transaction  described  above,  was amended to change the pricing
terms from above-market to market-based  pricing.  As a result of the amendment,
we received proceeds of $19.1 million from the customer. We used the proceeds to
repay  debt  and for  other  corporate  purposes.  The  proceeds  reduced  costs
allocated in the purchase price accounting for the Arch Western transaction and,
therefore, no gain or loss has been recognized.

                                    THE PLAN

      The Plan is available to all of our stockholders of record,  our employees
and the employees of our  subsidiaries.  As a participant  in the Plan,  you may
elect to reinvest all or part of your dividends to purchase additional shares of
our Common Stock.  Alternatively,  you may elect to  

                                       14
<PAGE>

participate  in the Plan by making cash payments to purchase  additional  shares
while continuing to receive your dividends in cash.

      Shares  of  Common  Stock  to be  purchased  by the Plan  with  reinvested
dividends will be made either in the open market or directly from us in the form
of  authorized  but  unissued  shares  (sometimes  referred to as "newly  issued
shares"),  including shares reacquired and held for future issuance.  We reserve
the right to cause the Plan to purchase shares with reinvested  dividends on the
open market or newly issued shares as we determine from time to time in our sole
discretion.  Shares  purchased with voluntary cash payments will be purchased in
open market transactions.

      Unless we authorize or direct EquiServe  otherwise,  open market purchases
may be made on any securities  exchange where shares of Common Stock are traded,
in the  over-the-counter  market or by  negotiated  transactions.  Common  Stock
purchased for participants will be registered  either in the participant's  name
or in the name of EquiServe's nominee.

      The Plan offers a  convenient  and  economical  means of  increasing  your
holdings  since  we pay all  brokerage  commissions  and most  service  fees and
administrative costs for stock purchases. In addition, to the extent that shares
purchased  by the  Plan  with  reinvested  dividends  are  newly  issued  shares
purchased  directly  from us, we will  receive  additional  funds to be used for
general corporate purposes.

      You should read this  Prospectus in its entirety  before  deciding to be a
participant in the Plan.

The principal features of the Plan include:

     o    Purchasing stock by reinvesting all or part of your cash dividends.

     o    Investing  additional  cash  payments  on a monthly  basis by check or
          through automated bank account  deductions,  whether or not you choose
          to reinvest your dividends.

     o    Acquiring  additional Common Stock with all brokerage  commissions and
          most service fees and administrative costs paid by us.

     o    Receiving cash dividends by check or electronically.

     o    Transferring  or making gifts of Common Stock to others in  book-entry
          or certificate form, with no transfer or certificate fees.

     o    Depositing your Common Stock certificates for safekeeping in your Plan
          account.

     o    Using all your designated dividends and/or voluntary cash investments,
          since the Plan credits  fractional  shares,  computed to three decimal
          places, to your account.

     o    Maintaining  voting  rights  for  all  full  shares  held  for  you by
          EquiServe.

     o    Simplifying your record keeping of additional stock purchases,  as you
          receive a statement after every investment.

                                       15
<PAGE>


     o    Terminating your participation in the Plan at any time.

Eligibility for Participation

      Each of our stockholders of record is eligible.  If you own shares held in
the name of a broker, bank or other nominee and wish to participate,  you should
request that shares be transferred into your own name.

      Our employees and employees of our  subsidiaries  may  participate  in the
voluntary  cash  investment   feature  of  the  Plan  through  optional  payroll
deductions.  Once an  employee is a  stockholder  (by taking  advantage  of such
feature  or  by  purchasing  shares  in  the  open  market),  the  employee  may
participate in the other Plan features. An employee who wishes to participate in
the  Plan  through  payroll  deductions  may  do  so  by  completing  a  Payroll
Authorization  Form  and  returning  it to our  Payroll  Department.  A  Payroll
Authorization Form may be obtained from our Human Resources Department.

How the Plan Works

Option 1--Full Dividend Reinvestment (with voluntary cash option)

      If you elect this option,  cash  dividends on all of your shares of Common
Stock will be  invested  automatically  for you in  additional  shares of Common
Stock.  Participants  in Option 1 can also invest cash as often as once a month,
by either  check or automatic  deduction  from their bank  accounts or both,  in
varying amounts from $25 per month to a maximum of $100,000 per calendar year to
purchase Common Stock. Under Option 1, you may, but need not, make any voluntary
cash investments.

Option 2--Partial Dividend Reinvestment (with voluntary cash option)

      If you choose this option, you specify the number of your shares of Common
Stock on  which  you wish to  receive  cash  dividends.  The  dividends  on your
remaining  shares will be reinvested.  You can invest cash under Option 2 in the
same way as described  above in Option 1. Under Option 2, you may, but need not,
make any voluntary cash investments.

      Cash dividends will be sent to you by check or, if you so elect, by direct
deposit.  Through the Plan's direct deposit  feature,  you may elect to have any
cash  dividends  not  reinvested in  additional  shares paid by electronic funds
transfer to your predesignated bank account. To receive such dividends by direct
deposit,  you must first complete and sign a Direct Deposit  Authorization  Form
and return the form to EquiServe.  This form is not part of the Enrollment  Form
and must be specifically requested by writing to or calling EquiServe.

      Direct  Deposit  Authorization  Forms will be  processed  and will  become
effective as promptly as  possible.  You may change the  designated  account for
direct  deposit or  discontinue  this feature at any time by  providing  written
instructions  to EquiServe.  If you change a bank account  number or establish a
new bank account to receive cash dividends,  a new Direct Deposit  Authorization
Form must be completed.

Option 3--Voluntary Cash Investments Only (no dividend reinvestment)

      If you elect this option, you can invest cash in the same way as described

                                       16
<PAGE>


above under Option 1, but your dividends will not be  automatically  reinvested.
You will  continue to receive cash  dividends on your shares,  as well as on any
full and  fractional  shares  purchased  through the Plan.  You may receive cash
dividends by check or by direct deposit as described above under Option 2.

Voluntary Cash Investments

      Under each of the above options,  our  stockholders and employees may also
invest cash at any time in varying amounts from a minimum of $25 per month up to
a maximum of $100,000 each calendar year to purchase shares of Common Stock. All
cash, in U.S. dollars, can be sent to EquiServe by personal check or money order
(made  payable to "First  Chicago-Arch  Coal DRP").  Once an employee  becomes a
stockholder,  the employee is eligible to participate in the other Plan features
available to our stockholders generally.

      You may make  voluntary cash  investments  regularly or from time to time,
and  you  may  vary  the  amount  of  each  investment,  subject  to  the  above
limitations.

      Voluntary   investments  may  also  be  made  through   automatic  monthly
deductions from your checking or savings accounts,  with a $1.00 transaction fee
subtracted  from  the  amount  drawn  from  your  bank  account  prior  to  each
investment.  The  minimum  monthly  deduction  is $25.  The  combined  amount of
automatic monthly  deductions and voluntary cash payments cannot exceed $100,000
per calendar year. Only  participants  with accounts at U.S. banks and financial
institutions may authorize automatic monthly deductions.  Once automatic monthly
deductions are  initiated,  funds will be drawn from your account three business
days prior to each Investment Date.

Investment Dates; Purchase Prices

      EquiServe will invest voluntary cash payments beginning on the 15th day of
each  month or as soon as  practicable  after such date (the  Investment  Date).
EquiServe will complete  investments of voluntary cash payments no later than 30
days  after  receipt  of the  payments  unless  completion  at a  later  date is
necessary or advisable under applicable  federal regulatory and securities laws.
For months in which quarterly dividends are paid, voluntary cash investments and
dividends will be invested  concurrently.  Dividends customarily are paid on the
15th day of the months of March, June, September and December.

      No interest  will be paid on funds held by EquiServe  pending  investment.
You should,  therefore,  insure that your voluntary cash investments will arrive
at the offices of EquiServe  just prior to an Investment  Date. You may obtain a
refund of any  voluntary  cash  investment  if a written  request  or  telephone
instructions  for such refund is received by EquiServe more than 48 hours before
the next Investment  Date. For the purpose of making  purchases,  EquiServe will
commingle  your  dividends and  voluntary  cash payments with those of the other
participants in the Plan.

      The price per share at which  shares will be purchased by the Plan will be
equal to:

                                       17
<PAGE>


     o    the  weighted  average  price per share of the shares of Common  Stock
          purchased  for  the  month  (for  shares   purchased  with  reinvested
          dividends or voluntary cash payments in the open market) or

     o    the average of the high and low per share sales  prices for the Common
          Stock  reported by the NYSE on the  Investment  Date (for newly issued
          shares purchased in the open market).

     If both open market purchases and purchases  directly from us are made with
reinvested  dividends  with  respect to any  Investment  Date,  the price of the
shares purchased will be the weighted average of both such prices.

Direct Registration System

     You  can  transfer  shares  from  your  brokerage  account.  If  you  are a
stockholder  who owns  shares of Common  Stock that are held by a bank,  broker,
trustee in street or nominee name  ("broker"),  you may participate with some or
all of your shares by instructing  your broker to have some or all of the shares
transferred into your name in Direct Registration book-entry form. To do so, you
must  instruct  your  broker  to  reregister  your  shares  through  the  Direct
Registration System and specify book-entry registration.

      You can  transfer  shares to your  brokerage  account.  To  electronically
transfer all or part of your  book-entry  shares to your account at your broker,
you may establish your broker account number on your Plan account.  To establish
your  broker  account  number,  you must  complete an  Authorization  to Provide
Broker/Dealer  Information  Form,  available upon request from your broker or by
writing to or calling EquiServe. Once your broker account number is established,
you can then  instruct  EquiServe  to  deliver  the  number of full  shares  you
specify.  EquiServe will  electronically  deliver your shares within 48 hours of
receiving and accepting your instructions. The signature(s) on the authorization
should be guaranteed by the broker/dealer with a Medallion Guarantee.

Issuance of Stock Certificates

      For your convenience, EquiServe will hold in safekeeping the shares it has
purchased  for  you.  This  protects  you  against  loss,  theft  or  accidental
destruction  of stock  certificates.  However,  upon  your  written  request  or
telephone instructions, EquiServe will issue to you at any time, without charge,
certificates for the number of full shares held by you under the Plan.

Deposit of Stock Certificates

      You also may send  EquiServe  your other  Common  Stock  certificates  for
safekeeping free of charge.  By making the deposit,  you will be relieved of the
responsibility  for loss, theft or destruction of the certificates.  If you wish
to  deposit  your  Common  Stock  certificates,  you must mail them along with a
request to EquiServe. The certificates should not be endorsed. To insure against
loss resulting from mailing certificates,  EquiServe will provide mail insurance
free of  charge  to you.  To be  eligible  for  certificate  mailing  insurance,
certificates must be mailed in brown-pre-addressed  return envelopes supplied by
EquiServe,  which can be  obtained  by either  writing to or calling  EquiServe.
Certificates  mailed in this manner  will be insured  for up to $25,000  current
market value provided they are mailed first class.  EquiServe will promptly 

                                       18
<PAGE>

send you a statement  confirming each deposit of your Common Stock certificates.
EquiServe must be notified of any lost certificate claim within 30 calendar days
of the date the  certificates  were  mailed.  To  submit a claim,  you must be a
participant  in the Plan or  current  holder of record of Common  Stock.  In the
latter  case,  you must  enroll in the Plan at the time the  insurance  claim is
processed. The maximum insurance protection provided is $25,000 and the coverage
is  available  only  when the  certificate(s)  are sent in  accordance  with the
guidelines described above.

      Insurance  covers  the  replacement  of  shares  of  stock,  but in no way
protects  against  any loss  resulting  from  fluctuations  in the value of such
shares  from  the  time  the  certificates  are  mailed  until  such  time  as a
replacement can be effected.

      If you do not use the brown pre-addressed  envelope provided by EquiServe,
certificates  should be sent to EquiServe via  registered  mail,  return receipt
requested,  and  insured  for  possible  mail  loss for 2% of the  market  value
(minimum of $20.00);  this represents the replacement  cost that will be charged
to you if your certificates are lost.

Gift/Transfer of Plan Shares

     You may make a gift of or transfer the  ownership of all or any full shares
held by you under the Plan to a Plan  account  for another  person.  No fees are
charged to the recipient for transfers of your shares. Requests for transfer are
subject to the same  requirements as the transfer of Common Stock  certificates,
which may include the requirement of a Medallion Guarantee.  For instructions on
how to gift or transfer your shares, you should write to or call EquiServe.

      Shares so  transferred  will  continue to be held by  EquiServe  under the
Plan.  An account will be opened in the name of the  recipient,  if he or she is
not already a participant,  and such recipient will automatically be enrolled in
the Plan.  If the  recipient is not already a  participant,  the account will be
enrolled under the full reinvestment option unless you specify differently.  The
recipient  may change the  reinvestment  election at any time after the gift has
been made.

      If a  transfer  involving  all of the shares in your  account is  received
after a record date but before the related  dividend  payment date, the transfer
will be processed  when  received,  and a cash dividend will be paid to you. You
may return the dividend check as a voluntary cash payment.

      The recipient will receive a statement showing the deposit of shares. Upon
your request,  EquiServe will also send, free of charge,  an  acknowledgment  of
gift.

Sale of Plan Shares

      You may at any time,  including upon withdrawal from the Plan, request the
sale of all or any full shares held by EquiServe in your Plan account.  Any such
request may be made either by writing to or calling  EquiServe.  EquiServe  will
make  every  effort  to  process  all sale  orders  on the date the  orders  are
received,  provided that instructions are received before 1:00 p.m. Eastern time
on a business day during which EquiServe and the relevant  securities market are
open. The proceeds from such 

                                       19
<PAGE>

sale, less any brokerage commission,  a service fee and any other costs of sale,
will be remitted to you. Each sale request will be processed and a check for the
net proceeds  will be mailed as promptly as possible  after  EquiServe  receives
such sale request.

Reports and Statements of Account

      Promptly after you purchase shares,  you will receive a transaction advice
with the details of the transaction.  After each dividend reinvestment, you will
receive  a  detailed  statement  showing  the  amount  of  the  latest  dividend
reinvested,  the purchase  price per share,  the number of shares  purchased and
your total Plan shares.  The statement also will show your certificate  holdings
as well as year-to-date account activity,  including purchases, sales, transfers
and dividend reinvestment payments. This will enable you to review your holdings
at a glance.

      On  each  transaction   advice  and  detailed   statement  you  will  find
information such as how to buy or sell shares through the Plan and where to call
or write  for  additional  information.  You also will  receive a  comprehensive
year-end  statement  summarizing  activity in your  account for the entire year,
which is helpful for record-keeping and tax purposes.

How to Enroll; Current Participants

      To enroll in the Plan, you must complete an Enrollment  Authorization Form
and forward it to EquiServe.  You may obtain an Enrollment Authorization Form by
writing to or calling EquiServe.

      Your  participation in the dividend  reinvestment  feature will begin with
the next  quarterly  dividend  payment date after receipt of your  authorization
provided  it is  received  before  the  record  date of such  dividend.  If your
Enrollment  Authorization Form arrives after the record date, your participation
will  begin  with  the  next  succeeding   quarterly   dividend   payment  date.
Participation  by means of a voluntary  cash  purchase  begins upon  EquiServe's
receipt of your Enrollment Authorization Form and your investment amount.

      Stockholders  of record who are  currently  participants  in the Plan will
remain  enrolled in  accordance  with the terms of this  Prospectus  unless such
stockholder  instructs EquiServe in writing to close the account or to alter the
conditions of participation.

Your Cost

      Purchases  under  the Plan  may be made at  little  or no cost to you.  No
brokerage  commissions  will be payable in connection with the purchase of newly
issued  shares  with  reinvested  dividends  under  the Plan.  Also,  we pay all
brokerage  commissions and most service charges and administrative fees for open
market purchases of shares under the Plan while you are a participant. You will,
however,  be charged a fee for any  returned  checks  and any  failed  automatic
deductions due to insufficient funds.

      There is no cost to you for gifting or transferring  your shares to a Plan
account  for  another  person.  However,  if you sell  shares  held in your Plan
account, you pay any brokerage commission,  a service fee and any other costs of
sale.

                                       20
<PAGE>


Income Tax Treatment

     We believe  the  following  to be an  accurate  summary of the  federal tax
consequences  of  participation  in the Plan as of the date of this  Prospectus.
This summary may not reflect  every  possible  situation  that could result from
participation  in the Plan  (particularly  to  participants  who are  tax-exempt
entities  or foreign  stockholders)  and does not  include a  discussion  of any
federal  or state  taxes on gifts or other  similar  transfers,  and  therefore,
participants  in the Plan are  advised to  consult  their own tax  advisor  with
respect to the tax consequences  (including federal,  state, local and other tax
laws and U.S. tax withholding laws) applicable to their particular situation.

      In the case of reinvested dividends,  when EquiServe acquires newly issued
shares  for a  participant's  account  directly  from us, the  participant  must
include in gross income a dividend equal to the number of shares  purchased with
the participant's  reinvested  dividends  multiplied by the fair market value of
Common Stock on the relevant  dividend  payment  date.  The fair market value is
based on 100% of the  average of the high and low  market  prices for the Common
Stock on the Investment Date. The  participant's  tax basis in those shares will
also equal the fair market value of the shares on the relevant Investment Date.

      When EquiServe  purchases Common Stock for a participant's  account on the
open market with  reinvested  dividends,  a  participant  must  include in gross
income an amount equal to the cash dividends reinvested plus that portion of any
brokerage  commissions  paid by us which are attributable to the purchase of the
participant's  shares.  The participant's tax basis in Plan shares will be equal
to the purchase price plus allocable brokerage commissions.

      In the case of the shares purchased on the open market with voluntary cash
payments,  participants will be in receipt of a dividend to be included in gross
income to the extent of any brokerage  commissions paid by us. The participant's
tax basis in the shares  acquired with  voluntary cash payments will be the cost
of the shares to EquiServe plus an allocable share of any brokerage  commissions
paid by us.

      A participant  will not realize any taxable  income when a certificate  is
received for whole shares  credited to the  participant's  account,  either upon
request for such certificate or upon withdrawal from or termination of the Plan.
However,  a gain or loss will be recognized by the participant when whole shares
acquired  under  the Plan are sold or  exchanged  - either by  EquiServe  at the
participant's request when withdrawing from the Plan or by the participant's own
action after  withdrawal from or termination of the Plan. The  Participant  also
will recognize gain or loss when receiving a cash payment for a fractional share
credited to the account upon  withdrawal  from or  termination  of the Plan. The
amount of the gain or loss will be the  difference  between  the  amount of cash
received for the shares or fractional shares and the tax basis of those shares.

      Each  participant will receive a Form 1099-DIV by January 31 following the
close of the Plan year which  provides  the amount of  dividend  income  that is
reportable to the Internal Revenue Service ("IRS"), including, where applicable,
an amount for brokerage  commissions paid on 

                                       21
<PAGE>


the participant's  behalf,  and an adjustment to reflect the difference  between
fair market value price and purchase price with respect to shares purchased from
us with reinvested dividends.

      A Form 1099-B will be  provided by January 31  following  the close of the
Plan year to  participants  who sold  shares  through  the Plan.  This form will
contain the amount of gross proceeds from the sale and the date of sale.

      A copy of each information return is also furnished to the IRS.

      Federal law requires  EquiServe to withhold an amount (currently 31%) from
the amount of dividends and the proceeds of any sale of shares for a participant
if: (i) that  participant  fails to certify to EquiServe that the participant is
not subject to backup  withholding (ii) that  participant  fails to certify that
the taxpayer identification number provided is correct or (iii) the IRS notifies
us that the participant is subject to backup  withholding.  The withheld amounts
will be deducted from the amount of dividends  and the remaining  amount will be
reinvested  or paid to you. The withheld  amount also will be deducted  from the
proceeds  of any sale of shares  and the  remaining  amount  will be sent to the
participant.

      In the case of those foreign  stockholders  whose dividends are subject to
United States income tax  withholding,  the amount of tax to be withheld will be
deducted from the amount of dividends and the remaining amount of dividends will
be reinvested or paid to you. In the case of those  foreign  stockholders  whose
sale proceeds are subject to withholding,  the amount of tax to be withheld will
be deducted from the proceeds of the sale of shares.

Voting Rights

      You have the right to vote full shares held in the Plan.  The proxy mailed
to you prior to the annual  meeting of  stockholders  will include the number of
full  shares  held by  EquiServe  in your Plan  account,  plus any other  shares
registered in your name.

Terminating Your Participation

      You may terminate your  participation in the Plan at any time by notifying
EquiServe in writing or by  telephone.  All  dividends  with a record date after
receipt  of your  notification  will be sent  directly  to you.  Voluntary  cash
investments  may be  withdrawn  at any  time,  provided  that  the  request  for
withdrawal  is  received  by  EquiServe  at  least  48  hours  prior to the next
Investment Date. Upon termination of your participation, EquiServe will continue
to hold your shares in book-entry  form unless you request a certificate for any
full share(s) and a check for any fractional  share.  Fractional  shares will be
valued at the then current market price of the Common Stock, less any applicable
brokerage  commission,  any  service  fee and any  other  costs of sale.  If you
prefer,  you can request  that all or part of your full shares held by EquiServe
be sold,  and you will  receive a check for the  proceeds,  less any  applicable
brokerage commission, a service fee and any other costs of sale.

Correspondence; Assistance Concerning the Plan

      The Plan is administered for our stockholders and participating  employees

                                       22
<PAGE>


by EquiServe. All notices, correspondence,  questions or other communications to
EquiServe should be addressed to:

                     First Chicago Trust Company of New York
                           Dividend Reinvestment Plans
                                  P.O. Box 2598
                           Jersey City, NJ 07303-2598

      Be sure to include a reference to Arch Coal, Inc. in your correspondence.

Telephone

     Stockholder customer service, including sale of shares: 1-800-317-4445

     An automated  voice  response  system is available 24 hours a day, 7 days a
week.

     Customer service  representatives are available from 8:30 a.m. to 7:00 p.m.
Eastern time each business day.

     TDD: 1-201-222-4955 Telecommu-nications device for the hearing impaired.

     Foreign Language Translation Service for more than 140 foreign languages is
available.

Internet

      Messages  forwarded  on the  Internet  will be  responded  to  within  one
business day. EquiServe's Internet address is http://www.equiserve.com.

E-Mail

      Our E-mail address at EquiServe is [email protected].

Modification/Termination of the Plan

      We reserve the right to modify, suspend or terminate the Plan at any time.
All participants will be sent notice of any such action.  Any such modification,
suspension  or  termination  will not,  of course,  affect  previously  executed
transactions.  We also  reserve  the  right to  adopt,  and from time to time to
change, such administrative rules and regulations (not inconsistent in substance
with the basic  provisions  of the Plan then in effect) as we deem  desirable or
appropriate for the administration of the Plan.  EquiServe reserves the right to
resign at any time upon reasonable written notice to us.

Additional Information

      Neither we nor  EquiServe  (nor any  agents,  representatives,  employees,
officers,  directors  or  subcontractors  of ours or  theirs)  will be liable in
administering  the  Plan for any act  done in good  faith or for any good  faith
omission to act,  including,  without  limitation,  any claim of  liability  (1)
arising   from  failure  to   terminate  a   participant's   account  upon  such
participant's  death, or (2) with respect to the prices or times at which shares
are  purchased or sold for  participants.  The  foregoing  does not  represent a
waiver of any rights a participant may have under applicable securities laws.

      We cannot, nor can EquiServe, assure a profit or protect against a loss on
shares purchased under the Plan.

                                 USE OF PROCEEDS

      The net  proceeds  from the sale of newly  issued  shares of Common  Stock
purchased with reinvested  dividends under 

                                       23
<PAGE>

the Plan will be used for our general corporate purposes.  Pending such use, the
net proceeds may be temporarily invested.  The precise amounts and timing of the
application of net proceeds will depend upon our funding  requirements and those
of our subsidiaries and the availability of other funds.

      We will not receive  any funds under the Plan from the  purchase of shares
of Common Stock in the open market by EquiServe.

                                  LEGAL MATTERS

      Jeffry N.  Quinn,  our Senior  Vice  President--Law  and Human  Resources,
Secretary and General Counsel, has provided us with a written legal opinion with
respect to the validity of the shares of Common Stock offered hereby.

                                     EXPERTS

     The consolidated financial statements of Arch Coal, Inc. as of December 31,
1998 and 1997 and for the years then ended  incorporated  by  reference  in Arch
Coal,  Inc.'s  Annual  Report (Form 10-K) for the year ended  December 31, 1998,
have been audited by Ernst & Young LLP,  independent  auditors,  as set forth in
their report thereon  incorporated by reference therein and incorporated  herein
by reference.  Such consolidated financial statements are incorporated herein by
reference in reliance  upon such report  given on the  authority of such firm as
experts in accounting and auditing.

      The  consolidated  financial  statements of Arch Coal, Inc. for year ended
December 31, 1996,  included in the  Company's  Annual Report for the year ended
December  31,  1998,  have been  audited  by Arthur  Andersen  LLP,  independent
auditors,  as set forth in its  report  thereon  included  as an  exhibit to the
Company's Form 10-K for the year ended December 31, 1998 and incorporated herein
by reference.  Such consolidated financial statements are incorporated herein by
reference in reliance upon such reports given upon the authority of said firm as
an expert in accounting and auditing.

     The financial  statements  of Canyon Fuel  Company,  LLC as of December 31,
1998 and for the year then ended  included in Arch Coal,  Inc.'s  Annual  Report
(Form 10-K) for the year ended  December 31, 1998,  have been audited by Ernst &
Young LLP, independent  auditors,  as set forth in their report thereon included
therein and  incorporated  herein by reference.  Such  financial  statements are
incorporated  herein by  reference  in reliance  upon such  report  given on the
authority of such firm as experts in accounting and auditing.

      The financial  statements of Canyon Fuel Company,  LLC for the period from
December  20,  1996  (inception)  through  December  31,  1997,  included in the
Company's Form 10-K for the year ended  December 31, 1998,  have been audited by
PricewaterhouseCoopers  LLP,  independent  auditors,  as set forth in its report
thereon and included as an exhibit to the Company's Form 10-K for the year ended
December  31,  1998,  and  incorporated  herein  by  reference.  Such  financial
statements  are  incorporated  herein by reference in reliance  upon such report
given upon the authority of said firm as an expert in accounting and auditing.


                                       24
<PAGE>


     You should rely on the information  contained in this Prospectus or that we
have  referred  you to.  We have  not  authorized  anyone  to  provide  you with
information that is different. We are not making an offer of these securities in
any state or country where the offer is not permitted. This Prospectus is not an
offer to sell and it is not soliciting an offer to buy any securities other than
those offered in this document; however, this Prospectus is not an offer to sell
and it is not soliciting an offer to buy any securities offered in this document
in any circumstances in which such offer or solicitation is unlawful. You should
not assume that the  information  in this  Prospectus is accurate as of any date
other than the date on the front of this Prospectus.


                                TABLE OF CONTENTS

                                                                           Page
WHERE YOU CAN FIND MORE INFORMATION..........................................2
INCORPORATION BY REFERENCE...................................................2
RISK FACTORS.................................................................3
INFORMATION ABOUT ARCH COAL.................................................13
THE PLAN....................................................................14
   Eligibility For Participation............................................16
   How the Plan Works.......................................................16
   Voluntary Cash Investments...............................................17
   Investment Dates; Purchase Prices........................................17
   Direct Registration System...............................................18
   Issuance of Stock Certificates...........................................18
   Deposit of Stock Certificates............................................18
   Gift/Transfer of Plan Shares.............................................19
   Sale of Plan Shares......................................................19
   Reports and Statements of Account........................................20
   How to Enroll; Current Participants......................................20
   Your Cost................................................................20
   Income Tax Treatment.....................................................21
   Voting Rights............................................................22
   Terminating Your Participation...........................................22
   Correspondence; Assistance Concerning the Plan...........................22
   Modification/Termination of the Plan.....................................23
   Additional Information...................................................23
USE OF PROCEEDS.............................................................23
LEGAL MATTERS...............................................................24
EXPERTS.....................................................................24


                                ARCH COAL, INC.
                                  Common Stock


                             =====================
                                   PROSPECTUS

                                  May 4, 1999
                             =====================


<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution.

      The following  table sets forth the  estimated  expenses to be incurred by
the Company in connection  with the issuance and  distribution of the securities
being registered, other than underwriting discounts and commissions.

     Registration Fee              $  6,672
     Printing                         2,000
     Accounting Fees                 13,000
     Legal Fees                      10,000
     Plan Agent                       7,000
     Miscellaneous                    1,328
                                   --------
     Total                         $ 40,000
                                   ========

Item 15.  Indemnification of Directors and Officers.

      Section  102(b)(7) of the Delaware  General  Corporation  Law (the "DGCL")
permits  a  corporation,  in its  certificate  of  incorporation,  to  limit  or
eliminate,  subject to certain statutory limitations, the liability of directors
to the  corporation  or its  stockholders  for monetary  damages for breaches of
fiduciary  duty,  except for liability (a) for any breach of the director's duty
of loyalty to the corporation or its stockholders, (b) for acts or omissions not
in good faith or which involve intentional  misconduct or a knowing violation of
law, (c) under Section 174 of the DGCL or (d) for any transaction from which the
director derived an improper  personal  benefit.  Article Ninth of the Company's
Restated  Certificate of  Incorporation  (the "Company  Certificate")  provides,
among other things,  that the personal  liability of directors of the Company is
so eliminated.

      Under  Section 145 of the DGCL, a  corporation  has the power to indemnify
directors and officers  under certain  prescribed  circumstances  and subject to
certain  limitations  against certain costs and expenses,  including  attorneys'
fees actually and  reasonably  incurred in connection  with any action,  suit or
proceeding, whether civil, criminal,  administrative or investigative,  to which
any of them is a party by reason  of his  being a  director  or  officer  of the
corporation if it is determined  that he acted in accordance with the applicable
standard  of conduct  set forth in such  statutory  provision.  Article V of the
Company's  Bylaws provides that the Company will indemnify any person who may be
involved, as a party or otherwise, in a claim, action, suit or proceeding (other
than any claim,  action,  suit or  proceeding  brought by or in the right of the
Company)  by reason of the fact that such person is or was a director or officer
of the Company, or is or was serving at the request of the Company as a director
or officer of any other  corporation  or entity,  against  certain  liabilities,
costs and  expenses.  The Company is also  authorized  to maintain  insurance on
behalf of any person who is or was a director or officer of the  Company,  or is
or was  serving at the  request of the  Company as a director  or officer of any
other corporation or entity,  against any liability asserted against such person
and incurred by such person in any such capacity or arising out of his status as
such,  whether or nor the Company would have the power to indemnify  such person
against such liability under the DGCL. The Company is a party to agreements with
its  directors  and officers  pursuant to which it has agreed to indemnify  them
against certain costs and expenses incurred by them in their capacities as such.

                                      II-1
<PAGE>

Item 16.  Exhibits.

      The following exhibits are filed with this registration statement:

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

  5.1     Opinion of Jeffry N. Quinn as to the  legality  of the shares  being
          registered

  23.1    Consent of Jeffry N. Quinn (included in Exhibit 5.1)

  23.2    Consent of Ernst & Young LLP

  23.3    Consent of Arthur Andersen LLP

  23.4    Consent of PricewaterhouseCoopers LLP

  24.1    Power of Attorney (included on signature page)


Item 17.  Undertakings.

      The undersigned registrant  undertakes:  (1) to file, during any period in
which  offers  or sales are  being  made,  a  post-effective  amendment  to this
registration  statement to include any material  information with respect to the
plan of distribution not previously  disclosed in the registration  statement or
any material change to such information in the registration statement; (2) that,
for the purpose of determining  any liability  under the Securities Act of 1933,
each such  post-effective  amendment  shall be  deemed to be a new  registration
statement relating to the securities  offered therein,  and the offering of such
securities  at that time shall be deemed to be the  initial  bona fide  offering
thereof;  and (3) to  remove  from  registration  by means  of a  post-effective
amendment  any of the  securities  being  registered  which remain unsold at the
termination of the offering.

      The  undersigned  registrant  hereby  undertakes  that,  for  purposes  of
determining  any liability  under the Securities Act of 1933, each filing of the
registrant's  annual  report  pursuant to section  13(a) or section 15(d) of the
Securities  Exchange  Act of 1934  (and,  where  applicable,  each  filing of an
employee  benefit  plan's  annual  report  pursuant  to  section  15(d)  of  the
Securities  Exchange  Act of 1934)  that is  incorporated  by  reference  in the
registration  statement  shall  be  deemed  to be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering hereof.

      Insofar as  indemnification  for liabilities  arising under the Securities
Act of 1933 may be permitted to directors,  officers and controlling  persons of
the  registrant  pursuant  to  the  foregoing  provisions,   or  otherwise,  the
registrant  has been advised that in the opinion of the  Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore,  unenforceable. In the event that a claim for indemnification
against such  liabilities  (other than the payment by the registrant of expenses
incurred or paid by a director,  officer or controlling person of the registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

                                      II-2

<PAGE>

                                   SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing  on Form S-3 and has  duly  caused  this  registration
statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the City of St. Louis, State of Missouri, on May 3, 1999.


                                      ARCH COAL, INC.

                                      By:  /s/ Steven F. Leer
                                         --------------------------------
                                         Steven F. Leer
                                         President and Chief Executive Officer


                                POWER OF ATTORNEY

      Know all  persons by these  presents,  that each  person  whose  signature
appears  below  constitutes  and  appoints  Steven F. Leer,  Jeffry N. Quinn and
Patrick A. Kriegshauser,  and each of them, his true and lawful attorney-in-fact
and agents, with full power of substitution and  resubstitution,  for him and in
his  name,  place  and  stead,  in any and all  capacities,  to sign any and all
amendments to this registration statement (including  post-effective  amendments
pursuant to Rule 462(b) or  otherwise),  and to file the same with all  exhibits
thereto,  and  other  documents  in  connection  therewith,  granting  unto said
attorneys-in-fact  and agents,  and each of them, full power and authority to do
and perform each and every act and thing  requisite  and necessary to be done in
and about the  premises,  as fully to all  intents  and  purposes as he might or
could  do  in  person,   hereby   ratifying   and   confirming   all  that  said
attorney-in-fact  and agents,  or their or his  substitute or  substitutes,  may
lawfully do or cause to be done by virtue hereof.

      Pursuant  to  the  requirements  of  the  Securities  Act  of  1933,  this
registration  statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.

            Signature                        Capacity                  Date

 /s/ Steven F. Leer              President, Chief Executive      April 21, 1999
- -----------------------------    Officer and Director            
Steven F. Leer

 /s/ Patrick A. Kriegshauser      Senior Vice President,          April 21, 1999
- -----------------------------     Treasurer and Chief
Patrick A. Kriegshauser           Financial Officer

 /s/ John W. Lorson               Controller (Principal           April 21, 1999
- -----------------------------     Accounting Officer)             
John W. Lorson

 /s/ Philip W. Block              Director                        April 21, 1999
- -----------------------------
Philip W. Block                                                

 /s/ James R. Boyd                Director                        April 30, 1999
- -----------------------------
James R. Boyd                

 /s/ Paul W. Chellgren            Director                        April 22, 1999
- -----------------------------
Paul W. Chellgren                                               


<PAGE>


                                  Director                        April __, 1999
- -----------------------------
Ignacio Dominguez Urquijo

 /s/ Thomas L. Feazell            Director                        April 26, 1999
- -----------------------------
Thomas L. Feazell

 /s/ Robert L. Hintz              Director                        April 22, 1999
- -----------------------------
Robert L. Hintz                                               

 /s/ Douglas H. Hunt              Director                        April 23, 1999
- -----------------------------
Douglas H. Hunt                                                

 /s/ James L. Parker              Director                        April 23, 1999
- -----------------------------
James L. Parker                                                

 /s/ A. Michael Perry             Director                        April 29, 1999
- -----------------------------
A. Michael Perry                                               

 /s/ J. Marvin Quin               Director                        April 24, 1999
- -----------------------------
J. Marvin Quin                                            

 /s/ Theodore D. Sands            Director                        April 21, 1999
- -----------------------------
Theodore D. Sands


<PAGE>

                                  EXHIBIT INDEX


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

    5.1        Opinion  of Jeffry N.  Quinn as to the  legality  of the shares
               being registered
    23.1       Consent of Jeffry N. Quinn (included in Exhibit 5.1)
    23.2       Consent of Ernst & Young LLP
    23.3       Consent of Arthur Andersen LLP
    23.4       Consent of PricewaterhouseCoopers LLP
    24.1       Power of Attorney (included on signature page)

                                                                   Exhibit 5.1



                                    May 4, 1999

Arch Coal Inc.
City Place One, Suite 300
Creve Couer, Missouri 63141

      Re:  Registration Statement On Form S-3

Ladies and Gentlemen:

      I am a Senior Vice  President - Law and Human  Resources,  Secretary and
General Counsel of Arch Coal,  Inc., a Delaware  corporation  (the "Company"),
and  have  acted  in  such  capacity  in  connection  with  the   Registration
Statement  on Form S-3 (the "Registration  Statement")  filed by the  Company
with the  Securities  and Exchange  Commission  pursuant to the Securities Act
of 1933,  as amended,  relating to the issuance by the Company of an aggregate
of up to 2,000,000  shares (the "Shares") of the Common Stock,  par value $.01
per  share,  of the  Company  pursuant  to the  Company's  Automatic  Dividend
Reinvestment and Stock Purchase Plan (the "Plan").

      I am  familiar  with the  Registration  Statement  and with the Plan.  I
have also examined corporate documents and such certificates,  instruments and
corporate  records,  and such questions of law, as I have deemed necessary for
purposes of expressing  an opinion on the matters  hereinafter  set forth.  In
all  examinations of documents,  instruments and other papers,  I have assumed
the genuineness of all signatures on original and certified  documents and the
conformity to original and certified  documents of all copies  submitted to me
as conformed, photostatic or other copies.

      On the basis of the  foregoing,  I am of the  opinion  that the  Shares,
when issued in accordance  with the Plan,  will be validly  issued,  and fully
paid and non-assessable.

      I  consent  to  the  filing  of  this  opinion  as  an  exhibit  to  the
Registration  Statement and to the reference to me in the Prospectus forming a
part thereof under the caption "Legal Matters".

                                    Sincerely,

                                      /s/ Jeffry N. Quinn

                                    Jeffry N. Quinn



                                                                  Exhibit 23.2

                         CONSENT OF INDEPENDENT AUDITORS



We  consent to the  reference  to our firm under the  caption  "Experts"  in the
Registration  Statement (Form S-3 No. 333-XXXXX) and related  Prospectus of Arch
Coal, Inc. for the  registration of 2,000,000  shares of its common stock and to
the incorporation therein of (i) our report dated January 22, 1999, with respect
to the  consolidated  financial  statements of Arch Coal,  Inc.  incorporated by
reference in its Annual Report (Form 10-K) for the year ended  December 31, 1998
and the related financial  statement  schedule included therein,  filed with the
Securities and Exchange Commission,  and (ii) our report dated January 22, 1999,
with  respect to the  financial  statements  of Canyon Fuel  Company,  LLC as of
December  31,  1998 and for the year then ended  included  in Arch Coal,  Inc.'s
Annual Report (Form 10-K) for the year ended  December 31, 1998,  filed with the
Securities and Exchange Commission.

 /s/ Ernst & Young LLP

Ernst & Young LLP

Louisville, Kentucky
April 28,1999



                                                                  Exhibit 23.3


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


As independent  public  accountants,  we hereby consent to the  incorporation by
reference in this  registration  statement of our report dated  January 16, 1997
(except with respect to the matter  discussed in Note 11 as to which the date is
April 4, 1997),  with respect to the consolidated  financial  statements of Arch
Coal, Inc. for the year ended December 31, 1996 incorporated by reference in its
Annual  Report (Form 10-K) for the year ended  December 31, 1998 and the related
financial  statement  schedule included  therein,  filed with the Securities and
Exchange  Commission,  and to  all  references  to our  firm  included  in  this
registration statement.

 /s/ Arthur Andersen LLP

Arthur Andersen LLP

St. Louis, Missouri
April 29, 1999



                                                                    Exhibit 23.4

                         CONSENT OF INDEPENDENT AUDITORS


We  hereby  consent  to the  incorporation  by  reference  in this  Registration
Statement  on Form S-3 of our  report  dated  March  20,  1998  relating  to the
financial  statements  of Canyon Fuel  Company,  LLC which appears in Arch Coal,
Inc.'s Annual Report on Form 10-K for the year ended  December 31, 1998. We also
consent to the reference to us under the heading "Experts".

 /s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Denver, Colorado
April 28, 1999




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