SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                   FORM 11-K







[ X ]   ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES 
        EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 1997.



                                       OR



[   ]   TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE
        SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______ to _______.

Commission file number 1-13105.

A.  Full title of the plan and the address of  the plan, if different from  that
    of the issuer named below: Ashland Coal, Inc. Employee Thrift Plan.

B.  Name of  issuer of the  securities to be held  pursuant  to the plan and the
    address of its  principal executive office: Arch Coal, Inc.,  CityPlace One,
    Suite 300, St. Louis, Missouri, 63141.





FINANCIAL STATEMENTS AND EXHIBITS

Financial Statements and Schedules

      Report of Independent Auditors
      Statements of Net Assets Available for Benefits
      Statement of Changes in Net Assets Available for Benefits
      Notes to Financial Statements
      Schedule of Assets Held for Investment Purposes
      Schedule of Reportable Transactions


Exhibits

      23 - Consent of Ernst & Young LLP, independent auditors








                              Financial Statements
                                  and Schedules

                           Ashland Coal, Inc. Employee
                                   Thrift Plan

                          Year Ended December 31, 1997
                       with Report of Independent Auditors





                     Ashland Coal, Inc. Employee Thrift Plan

                              Financial Statements
                                  and Schedules

                          Year Ended December 31, 1997


                                    Contents


Financial Statements

Report of Independent Auditors............................................1
Statements of Net Assets Available for Benefits...........................2
Statement of Changes in Net Assets Available for Benefits.................4
Notes to Financial Statements ............................................5


Schedules

Schedule of Assets Held for Investment Purposes..........................13
Schedule of Reportable Transactions .....................................14







                                                                             

                         Report Of Independent Auditors


To the Administrator
Ashland Coal, Inc. Employee Thrift Plan

We have audited the accompanying statements of net assets available for benefits
of the Ashland Coal, Inc. Employee Thrift Plan as of December 31, 1997 and 1996,
and the related  statement of changes in net assets  available  for benefits for
the  year  ended  December  31,  1997.   These  financial   statements  are  the
responsibility  of the Plan's  management.  Our  responsibility is to express an
opinion on these financial statements based on our audits.

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

In our opinion,  the financial  statements  referred to above present fairly, in
all  material  respects,  the net assets  available  for benefits of the Plan at
December 31, 1997 and 1996, and the changes in net assets available for benefits
for the year ended  December 31, 1997, in  conformity  with  generally  accepted
accounting principles.

Our audits  were  performed  for the  purpose of forming an opinion on the basic
financial statements taken as a whole. The accompanying  supplemental  schedules
of assets held for  investment  purposes as of December 31, 1997 and  reportable
transactions  for the year then ended are  presented  for  purposes of complying
with  the  Department  of  Labor's  Rules  and  Regulations  for  Reporting  and
Disclosure under the Employee Retirement Income Security Act of 1974 and are not
a required part of the basic financial statements.  These supplemental schedules
are the  responsibility  of the Plan's  management.  The Fund Information in the
statements of net assets  available for benefits and the statement of changes in
net assets  available  for  benefits is  presented  for  purposes of  additional
analysis  rather  than to present  the net assets  available  for  benefits  and
changes in net assets  available  for  benefits of each fund.  The  supplemental
schedules and Fund  Information  have been subjected to the auditing  procedures
applied in our audits of the basic financial statements and, in our opinion, are
fairly  stated in all  material  respects  in  relation  to the basic  financial
statements taken as a whole.

June 25, 1998                                              /s/ Ernst & Young LLP

                                       1





Ashland Coal, Inc. Employee Thrift Plan Statements of Net Assets Available for Benefits, with Fund Information December 31, 1997 AMERICAN AMERICAN AMERICAN CENTURY- CENTURY- CENTURY- ARCH COAL ASHLAND INC. TWENTIETH TWENTIETH TWENTIETH INC. COMMON COMMON CENTURY CENTURY CENTURY TOTAL STOCK FUND STOCK FUND GROWTH FUND ULTRA FUND VISTA FUND ------------ ----------------------------------------------------------------------- ASSETS Cash $ 10,643 $ 169 $ -- $ -- $ 60 $ 46 Investments Common stock 1,787,075 1,787,075 -- -- -- -- Mutual funds 14,479,466 -- -- 2,308,311 3,111,522 1,769,150 Common trust funds 12,179,030 -- -- -- -- -- Participant notes receivable 425,998 -- -- -- -- -- ---------- ---------- ------- --------- --------- --------- Total investments 28,871,569 1,787,075 -- 2,308,311 3,111,522 1,769,150 ---------- --------- ------- --------- --------- --------- Receivables Participant 137,092 7,628 -- 15,533 19,950 14,931 Employer 89,679 4,990 -- 10,161 13,050 9,767 ---------- ---------- ------- --------- --------- --------- Total receivables 226,771 12,618 -- 25,694 33,000 24,698 ---------- ---------- ------- --------- --------- --------- Net assets available for benefits $29,108,983 $1,799,862 $ -- $2,334,005 $3,144,582 $1,793,894 =========== ========== ========= ========== ========== ========== TABLE CONTINUED AMERICAN CENTURY- AMERICAN BENHAM CENTURY- AMERICAN INTERMEDIATE- TWENTIETH BENHAM CENTURY TERM AMERICAN CENTURY STABLE VALUE BALANCED GOVERNMENT CENTURY INTERNATIONAL BARCLAYS GOVERNMENT PARTICIPANT FUND FUND VALUE FUND GROWTH FUND EQUITY INDEX FUND LOAN FUND --------------------------------------------------------------------------------------------------------- ASSETS Cash $ 2,732 $ 1,801 $ 65 $ 48 $ 2,904 $ 2,818 $ -- Investments Common stock -- -- -- -- -- -- -- Mutual funds 1,339,714 696,763 3,843,262 1,410,744 -- -- -- Common trust funds -- -- -- -- 3,429,359 8,749,671 -- Participant notes receivable -- -- -- -- -- -- 425,998 --------- -------- --------- --------- --------- --------- --------- Total investments 1,339,714 696,763 3,843,262 1,410,744 3,429,359 8,749,671 425,998 --------- -------- --------- --------- --------- --------- --------- Receivables Participant 7,394 3,716 16,831 11,040 18,140 21,929 -- Employer 4,837 2,431 11,010 7,222 11,866 14,345 -- --------- -------- --------- --------- --------- --------- --------- Total receivables 12,231 6,147 27,841 18,262 30,006 36,274 -- --------- -------- --------- --------- --------- --------- --------- Net assets available for benefits $1,354,677 $704,711 $3,871,168 $1,429,054 $3,462,269 $8,788,763 $425,998 ========== ======== ========== ========== ========== ========== ======== SEE ACCOMPANYING NOTES.
2
Ashland Coal, Inc. Employee Thrift Plan Statements of Net Assets Available for Benefits, with Fund Information December 31, 1996 AMERICAN AMERICAN AMERICAN CENTURY- CENTURY- CENTURY- ARCH COAL ASHLAND INC. TWENTIETH TWENTIETH TWENTIETH INC. COMMON COMMON CENTURY CENTURY CENTURY TOTAL STOCK FUND STOCK FUND GROWTH FUND ULTRA FUND VISTA FUND ------------ ----------------------------------------------------------------------- ASSETS Cash $ 9,733 $ 9,702 $ 31 $ -- $ -- $ -- Investments Common stock 2,760,011 2,466,531 293,480 -- -- -- Mutual funds 12,397,552 -- -- 1,971,847 2,542,921 1,999,938 Common trust funds 9,400,967 -- -- -- -- -- Participant notes receivable 275,501 -- -- -- -- -- ----------- ----------- -------- ----------- ----------- ----------- Total investments 24,834,031 2,466,531 293,480 1,971,847 2,542,921 1,999,938 ----------- ----------- -------- ----------- ----------- ----------- Receivables Participant 100,962 3,703 -- 8,283 11,229 9,687 Employer 43,419 1,588 -- 3,557 4,848 4,154 ----------- ----------- -------- ----------- ----------- ----------- Total receivables 144,381 5,291 -- 11,840 16,077 13,841 ----------- ----------- -------- ----------- ----------- ----------- Net assets available for benefits $24,988,145 $2,481,524 $293,511 $1,983,687 $2,558,998 $2,013,779 =========== =========== ======== =========== =========== =========== TABLE CONTINUED AMERICAN CENTURY- AMERICAN BENHAM CENTURY- AMERICAN INTERMEDIATE- TWENTIETH BENHAM CENTURY TERM AMERICAN CENTURY STABLE VALUE BALANCED GOVERNMENT CENTURY INTERNATIONAL BARCLAYS GOVERNMENT PARTICIPANT FUND FUND VALUE FUND GROWTH FUND EQUITY INDEX FUND LOAN FUND ------------------------------------------------------------------------------------------------------ ASSETS Cash $ -- $ -- $ -- $ -- $ -- $ -- $ -- Investments Common stock -- -- -- -- -- -- Mutual funds 1,100,293 859,030 2,798,170 1,125,353 2,335,542 7,065,425 -- Common trust funds Participant notes receivable -- -- -- -- -- -- 275,501 ---------- ---------- ---------- ---------- ---------- ---------- ---------- Total investments 1,100,293 859,030 2,798,170 1,125,353 2,335,542 7,065,425 275,501 ---------- ---------- ---------- ---------- ---------- ---------- ---------- Receivables Participant 4,031 8,946 20,436 8,929 14,387 11,331 -- Employer 1,745 3,834 8,765 3,832 6,170 4,926 -- ---------- ---------- ---------- ---------- ---------- ---------- ---------- Total receivables 5,776 12,780 29,201 12,761 20,557 16,257 -- ---------- ---------- ---------- ---------- ---------- ---------- ---------- Net assets available for benefits $1,106,069 $ 871,810 $2,827,371 $1,138,114 $2,356,099 $7,081,682 $ 275,501 ========== ========== ========== ========== ========== ========== ========== SEE ACCOMPANYING NOTES.
3
Ashland Coal, Inc. Employee Thrift Plan Statement of Changes in Net Assets Available for Benefits, with Fund Information Year Ended December 31, 1997 AMERICAN AMERICAN AMERICAN CENTURY- CENTURY- CENTURY- AMERICAN ARCH COAL ASHLAND INC. TWENTIETH TWENTIETH TWENTIETH CENTURY INC. COMMON COMMON CENTURY CENTURY CENTURY BALANCED TOTAL STOCK FUND STOCK FUND GROWTH FUND ULTRA FUND VISTA FUND FUND ------------ ---------------------------------------------------------------------------------- Additions to net assets attributed to: Investment income Net appreciation (depreciation) in fair value of investments $ 1,002,482 $ (14,844) $ 39,773 $ 218,296 $ (35,164) $ (283,672) $ 56,299 Interest and dividend income 2,622,668 36,120 6,253 344,812 642,650 108,296 133,315 --------- --------- --------- --------- --------- --------- -------- 3,625,150 21,276 46,026 563,108 607,486 (175,376) 189,614 Less investment management fees (2,186) (87) -- (256) (282) (253) (93) --------- --------- --------- --------- --------- --------- -------- 3,622,964 21,189 46,026 562,852 607,204 (175,629) 189,521 Contributions Participant 1,956,462 102,943 -- 213,696 284,458 219,799 95,492 Employer 1,093,991 60,919 -- 117,233 158,860 117,737 63,011 --------- --------- --------- --------- --------- --------- -------- 3,050,453 163,862 -- 330,929 443,318 337,536 158,503 --------- --------- --------- --------- --------- --------- -------- Total additions 6,673,417 185,051 46,026 893,781 1,050,522 161,907 348,024 Benefits paid to participants (2,552,579) (98,006) (11,526) (122,796) (232,749) (60,744) (138,329) --------- --------- --------- --------- --------- --------- -------- Net increase (decrease) prior to transfers 4,120,838 87,045 34,500 770,985 817,773 101,163 209,695 Interfund transfers (net) -- (768,707) (328,011) (420,667) (232,189) (321,048) 38,913 --------- --------- --------- --------- --------- --------- -------- Net increase (decrease) 4,120,838 (681,662) (293,511) 350,318 585,584 (219,885) 248,608 Net assets available for benefits Beginning of year 24,988,145 2,481,524 293,511 1,983,687 2,558,998 2,013,779 1,106,069 ---------- --------- --------- --------- --------- --------- --------- End of year $29,108,983 $1,799,862 $ -- $2,334,005 $3,144,582 $1,793,894 $1,354,677 =========== ========== ========= ========== ========== ========== ========== TABLE CONTINUED AMERICAN CENTURY- AMERICAN BENHAM CENTURY- INTERMEDIATE- TWENTIETH BENHAM TERM AMERICAN CENTURY STABLE VALUE GOVERNMENT CENTURY INTERNATIONAL BARCLAYS GOVERNMENT PARTICIPANT FUND VALUE FUND GROWTH FUND EQUITY INDEX FUND LOAN FUND ----------------------------------------------------------------------------------------- Additions to net assets attributed to: Investment income Net appreciation (depreciation) in fair value of investments $ 16,956 $ 162,732 $ 43,925 $ 798,181 $ -- $ -- Interest and dividend income 39,873 622,898 196,974 -- 462,181 29,296 -------- --------- -------- --------- --------- ------ 56,829 785,630 240,899 798,181 462,181 29,296 Less investment management fees (93) (232) (161) (266) (463) -- -------- --------- -------- --------- --------- ------ 56,736 785,398 240,738 797,915 461,718 29,296 Contributions Participant 42,899 233,079 145,963 234,164 383,969 -- Employer 29,869 119,992 78,888 134,195 213,287 -- -------- --------- -------- --------- --------- ------ 72,768 353,071 224,851 368,359 597,256 -- -------- --------- -------- --------- --------- ------ Total additions 129,504 1,138,469 465,589 1,166,274 1,058,974 29,296 Benefits paid to participants (64,673) (344,086) (105,005) (230,427) (1,105,018) (39,220) -------- --------- -------- --------- --------- ------ Net increase (decrease) prior to transfers 64,831 794,383 360,584 935,847 (46,044) (9,924) Interfund transfers (net) (231,930) 249,414 (69,644) 170,323 1,753,125 160,421 -------- --------- -------- --------- --------- ------- Net increase (decrease) (167,099) 1,043,797 290,940 1,106,170 1,707,081 150,497 Net assets available for benefits Beginning of year 871,810 2,827,371 1,138,114 2,356,099 7,081,682 275,501 -------- --------- -------- --------- --------- ------- End of year $ 704,711 $3,871,168 $1,429,054 $3,462,269 $8,788,763 $425,998 ========= ========== ========== ========== ========== ======== SEE ACCOMPANYING NOTES.
4 Ashland Coal, Inc. Employee Thrift Plan Notes To Financial Statements December 31, 1997 1. PLAN AMENDMENT AND DESCRIPTION OF PLAN Pursuant to an April 4, 1997 Agreement and Plan of Merger among Ashland Coal, Inc., Arch Mineral Corporation, and AMC Merger Corporation (AMC) (a wholly-owned subsidiary of Arch Mineral), Arch Mineral's name was changed to Arch Coal, Inc. and Ashland Coal, Inc. merged with AMC effective July 1, 1997, thereby becoming a wholly-owned subsidiary of Arch Coal, Inc. On the effective date of the merger, the Ashland Coal, Inc. Employee Thrift Plan (the Plan) was amended to eliminate the Ashland Coal, Inc. Stock Fund and to provide for a new Arch Coal common stock investment option in its place. All outstanding Ashland Coal shares held in the Plan were automatically converted to Arch Coal stock. References herein to "the Company" relate to Ashland Coal prior to the merger and to Arch Coal after the merger. The following description of the Plan provides only general information. Participants should refer to the summary plan description, copies of which are available from Arch Coal, for a more complete description of the Plan's provisions. GENERAL The Plan was established as a defined contribution plan covering eligible employees of the Company and its participating subsidiaries. The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974 (ERISA). CONTRIBUTIONS Subject to applicable limitations, participating employees may contribute an amount up to 16 percent of their salaries or wages to the Plan, on either a before-tax or after-tax basis. Through July 31, 1997, the Company contributed an amount equal to 70 percent of the amount of "Basic Contributions" by plan participants. "Basic Contributions" are amounts contributed by employees up to 6 percent of their salaries or wages. Effective August 1, 1997, the Company "matching" contributions on "Basic Contributions" were increased to 100 percent of the first 6 percent contributed by the plan participants. 5 Ashland Coal, Inc. Employee Thrift Plan Notes To Financial Statements (continued) 1. PLAN AMENDMENT AND DESCRIPTION OF PLAN (CONTINUED) PARTICIPANT ACCOUNTS The accounts of the Plan are maintained on the accrual basis of accounting. Contributions from employees and related employer contributions are recorded when the employer makes payroll deductions from Plan participants. Investment income (or loss), less investment management fees, is allocated to participants' accounts on the basis of each participant's proportionate interest in the fund. The value of the fund and the value of each participant's interest will fluctuate with the fair value of the securities in which the fund is invested. VESTING Participants are immediately vested in their contributions, as well as rollover contributions and any qualified Company contributions, plus actual earnings thereon. Matching Company contributions of participants first hired prior to August 1, 1996 are fully vested and non-forfeitable, but matching Company contributions of participants first hired on or after August 1, 1996 only become vested after the participant completes five years of continuous service. INVESTMENT OPTIONS Upon enrollment in the Plan, a participant may direct employer and employee contributions in any of the following investment options: Arch Coal, Inc. Common Funds invested in Arch Coal's common stock. This Stock Fund investment option became available to participants on July 1, 1997. Ashland Coal, Inc. Funds invested in Ashland Coal's common stock. This Common Stock Fund investment option was replaced by the above option on July 1, 1997. Ashland Inc. Common Funds invested in common stock of Ashland Inc. Stock Fund Effective December 31, 1997, this investment option was discontinued. Prior to year end, funds were reallocated based on individual instructions by the affected plan participants. 6 Ashland Coal, Inc. Employee Thrift Plan Notes To Financial Statements (continued) 1. PLAN AMENDMENT AND DESCRIPTION OF PLAN (CONTINUED) INVESTMENT OPTIONS (CONTINUED) American Century - An equity mutual fund that seeks capital growth Twentieth Century over time by investing in common stocks considered Growth Fund by American Century Services, Inc. (American Century), previously named Twentieth Century Services, Inc., to have better-than-average prospects for appreciation. Stocks in Growth's portfolio are not required to pay dividends. American Century - An aggressive equity mutual fund that seeks capital Twentieth Century Ultra growth over time by investing in common stocks Fund considered by American Century to have better-than-average prospects for appreciation. Ultra typically invests in medium-to-large sized companies. American Century - An aggressive equity mutual fund that seeks capital Twentieth Century Vista growth over time by investing in common stocks Fund considered by American Century to have better-than-average prospects for appreciation. Vista typically invests in small-to-medium sized companies. American Century A balanced mutual fund that seeks capital growth Balanced Fund and current income by investing approximately 60 percent of its assets in growth stocks and the remainder in fixed income securities. This combination of equity and fixed income investments is designed to provide investors with current income as they invest for growth. American Century - The mutual fund invests in securities issued by the Benham U.S. government and its agencies, including Intermediate-Term mortgage-backed securities. The weighted average Government Fund maturity of the fund is between three and ten years. American Century Value A conservative equity mutual fund that seeks Fund long-term capital growth. Income is a secondary objective. To pursue its objective, the fund invests primarily in equity securities of well-established companies that are believed by American Century to be undervalued at the time of purchase. 7 Ashland Coal, Inc. Employee Thrift Plan Notes To Financial Statements (continued) 1. PLAN AMENDMENT AND DESCRIPTION OF PLAN (CONTINUED) INVESTMENT OPTIONS (CONTINUED) American Century - The mutual fund seeks capital growth over time by Twentieth Century investing in common stocks of foreign companies International Growth considered by American Century to have better-than- Fund average prospects for appreciation. To find the best opportunities for growth, the fund spreads its investments across many countries and continents. The fund may invest in U.S. companies when circumstances warrant, but its primary purpose is to diversify investments across a broad range of overseas companies. Barclays Equity Index The common trust fund seeks the long-term capital appreciation potential of large capitalization Blue Chip stocks while minimizing risk through broad diversification. The fund invests in Barclays Equity Index Fund, a highly diversified portfolio of the stocks included in the Standard & Poor's 500 Composite Stock Price Index (S&P 500 Index). Benham Stable Value The common trust fund seeks to provide current Government Fund income, while maintaining a stable share price. The investment objective of the Benham Fund is to earn current income that is relatively consistent over time, while preserving capital and relative stability of principal, while investing exclusively in a diversified pool of fixed income obligations of the U.S. government and its agencies. PARTICIPANT NOTES RECEIVABLE Participants may borrow from their fund accounts a minimum of $1,000 up to a maximum of the lesser of $50,000 or 50 percent of their account balance. Loan transactions are treated as a transfer from (to) the investment fund to (from) the loan fund. Loan terms range from 1-5 years or up to 10 years for the purchase of a primary residence. The loans are secured by a lien on the participant's Plan accounts. Loans bear an interest rate of the prime rate in effect as of the first day of the month in which the loan was entered, plus 1 percent. Principal and interest is paid ratably through payroll deductions. 8 Ashland Coal, Inc. Employee Thrift Plan Notes To Financial Statements (continued) 1. PLAN AMENDMENT AND DESCRIPTION OF PLAN (CONTINUED) PAYMENT OF BENEFITS On termination of service, a participant may receive a lump-sum amount equal to the value of the account, or upon death, disability or retirement, may elect to receive payment in optional payment forms which include installment payments, life annuities, or joint and survivor annuities. PLAN TERMINATION Although it has not expressed any intent to do so, the Company has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. In the event of a termination of the Plan, the Plan and related trust shall be continued until such time as all accounts have been fully distributed, at which time the Plan and trust shall terminate. 2. SUMMARY OF ACCOUNTING POLICIES The financial statements of the Plan are prepared on the accrual basis of accounting. INVESTMENT VALUATION AND INCOME RECOGNITION Investments are stated at fair value. Securities traded on a national securities exchange are valued at the closing market price on the last business day of the plan year. The shares of mutual funds are valued at quoted market prices which represent the net asset values of shares held by the Plan at year-end. The fair value of the participation units owned by the Plan in common trust funds are based on quoted redemption values on the last business day of the Plan year. The participant notes receivable are valued at their outstanding balances, which approximate fair value. The cost of investments disposed of is determined on the basis of average historical cost. Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on the accrual basis. Dividends are recorded on the ex-dividend date. USE OF ESTIMATES The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. 9 Ashland Coal, Inc. Employee Thrift Plan Notes To Financial Statements (continued) 3. INVESTMENTS The Plan's investments are held by a bank administered trust fund and are presented in the following table.
DECEMBER 31 1997 1996 ------------ ------------ Investments at fair value determined by quoted market price: Common stock Arch Coal, Inc., 65,272 shares $ 1,787,075 $ -- Ashland Coal, Inc., 88,884 shares -- 2,466,531 Ashland Inc., 6,689 shares -- 293,480 ----------- ----------- 1,787,075 2,760,011 Mutual funds American Century-Twentieth Century Growth Fund, 96,140 and 90,121 shares, 2,308,311 1,971,847 respectively American Century-Twentieth Century Ultra Fund, 113,975 and 90,528 shares, 3,111,522 2,542,921 respectively American Century-Twentieth Century Vista Fund, 142,444 and 137,832 shares, 1,769,150 1,999,938 respectively American Century Balanced Fund, 73,854 and 63,748 shares, respectively 1,339,714 1,100,293 American Century-Benham Intermediate-Term Government Fund, 66,044 and 88,743 shares, respectively 696,763 859,030 American Century Value Fund, 552,987 and 424,609 shares, respectively 3,843,262 2,798,170 American Century-Twentieth Century International Growth Fund, 172,252 and 141,376 shares, respectively 1,410,744 1,125,353 ----------- ----------- 14,479,466 12,397,552 Common trust funds Barclays Equity Index, 150,147 and 135,945 units, respectively 3,429,359 2,335,542 Benham Stable Value Government Fund, 8,749,671 and 7,065,425 units, 8,749,671 7,065,425 respectively ----------- ----------- 12,179,030 9,400,967 Investments at estimated fair value: Participant notes receivable 425,998 275,501 ----------- ----------- Total investments at fair value $28,871,569 $24,834,031 =========== ===========
10 Ashland Coal, Inc. Employee Thrift Plan Notes To Financial Statements (continued) 3. INVESTMENTS (CONTINUED) During the year ended December 31, 1997, the Plan's investments (including investments bought, sold, as well as held during the year) appreciated in fair value as follows: Investments at fair value determined by quoted market price: Common stocks $ 24,929 Mutual funds 179,372 Common trust funds 798,181 ------- $ 1,002,482 =========== 4. TAX STATUS OF THE PLAN The Internal Revenue Service ruled on February 25, 1997 that the Plan qualifies under Section 401(a) of the Internal Revenue Code (IRC) and, therefore, the related trust is not subject to tax under present income tax law. Once qualified, the Plan is required to operate in conformity with the IRC to maintain its qualification. The Company is not aware of any course of action or series of events that have occurred that might adversely affect the Plan's qualified status. 5. TRANSACTIONS WITH PARTIES-IN-INTEREST The Company engages the services of a third party service provider to assist it in carrying out certain administrative and record keeping functions under the Plan. All expenses of administering the Plan are paid by the Company. The Plan is not charged for administrative services performed on its behalf by the Company. The Plan has investments in the common stock of the sponsoring company as well as in mutual funds sponsored by the third party service provider of the Plan. 6. SUBSEQUENT EVENT On January 1, 1998, Arch Coal merged three similar plans sponsored by Arch Coal and affiliated companies, including the Ashland Coal, Inc. Employee Thrift Plan, into the Arch Coal, Inc. Employee Thrift Plan. Effective with the merger of the plans, all Plan participants became fully vested in their participant accounts as the Arch Coal, Inc. Employee Thrift Plan provides for immediate vesting of matching Company contributions for Plan participants employed on or before December 31, 1997. Participants hired on or after January 1, 1998 are fully vested in their participant accounts, but will only become fully vested in the matching Company contribution account upon the completion of three full and consecutive years of service. 11 Ashland Coal, Inc. Employee Thrift Plan Notes To Financial Statements (continued) 7. YEAR 2000 ISSUE (UNAUDITED) The Company has developed a plan to modify its internal information technology to be ready for the year 2000 and has begun converting critical data processing systems. The project also includes determining whether third party service providers have reasonable plans in place to become year 2000 compliant. The Company currently expects the project to be substantially complete by the third quarter of 1999. The Company does not expect this project to have a significant effect on plan operations. 12 Schedules Ashland Coal, Inc. Employee Thrift Plan EIN #61-0880012, Plan Number 010 Line 27a - Schedule of Assets Held for Investment Purposes December 31, 1997
DESCRIPTION OF INVESTMENT, INCLUDING MATURITY DATE, RATE OF INTEREST, PAR OR IDENTITY OF ISSUE, BORROWER, LESSOR OR SIMILAR PARTY MATURITY VALUE COST CURRENT VALUE - --------------------------------------------------------------------- ---------------------- ------------- --------------- Common stocks: Arch Coal, Inc. 65,272 shares $ 1,706,569 $ 1,787,075 Mutual funds: American Century-Twentieth Century Growth Fund* 96,140 shares 2,243,208 2,308,311 American Century-Twentieth Century Ultra Fund* 113,975 shares 3,138,419 3,111,522 American Century-Twentieth Century Vista Fund* 142,444 shares 2,077,016 1,769,150 American Century Balanced Fund* 73,854 shares 1,308,146 1,339,714 American Century-Benham Intermediate-Term Government Fund* 66,044 shares 681,536 696,763 American Century Value Fund* 552,987 shares 3,565,095 3,843,262 American Century-Twentieth Century International Growth Fund* 172,252 shares 1,389,266 1,410,744 ----------- ----------- 14,402,686 14,479,466 Common trust funds: Barclays Equity Index 150,147 units 2,303,917 3,429,359 Benham Stable Value Government Fund 8,749,671 units 8,749,671 8,749,671 ----------- ----------- 11,053,588 12,179,030 Participant loans 9-10% -- 425,998 ----------- $28,871,569 * Indicates Party-in-interest to the Plan ===========
13 Ashland Coal, Inc. Employee Thrift Plan EIN #61-0880012, Plan Number 010 Line 27d - Schedule of Reportable Transactions Year Ended December 31,1997
Current Value of Asset on Net Identity Purchase Selling Cost of Transaction Gain of Party Description of Assets Price Price Asset Date (Loss) - ----------- --------------------------------- --------- ---------- --------- -------------- ------- CATEGORY (III)--SERIES OF TRANSACTIONS IN EXCESS OF 5% OF PLAN ASSETS Ashland Coal, Inc. Arch Coal, Inc. Common Stock $ 286,094 $ -- $ 286,094 $ 286,094 $ -- Arch Coal, Inc. Common Stock -- 965,585 909,710 965,585 55,875 Arch Coal, Inc. Common Stock 893,135 -- 893,135 893,135 -- Arch Coal, Inc. Common Stock -- 906,972 5,355 906,972 901,617 Ashland Inc. Ashland Coal, Inc. Common Stock 201,166 -- 201,166 201,166 -- Ashland Coal, Inc. Common Stock -- 199,334 -- 199,334 199,334 Ashland Inc. Common Stock -- 341,369 140,890 341,369 200,479 American Century American Century-Twentieth Century Growth Fund 860,443 -- 860,443 860,443 -- American Century-Twentieth Century Growth Fund -- 1,087,087 963,150 1,087,087 123,937 American Century-Twentieth Century Ultra Fund 990,717 -- 990,717 990,717 -- American Century-Twentieth Century Ultra Fund -- 1,029,600 914,250 1,029,600 115,350 American Century-Twentieth Century Vista Fund 834,626 -- 834,626 834,626 -- American Century-Twentieth Century Vista Fund -- 890,038 941,988 890,038 (51,950) American Century Balanced Fund 361,037 -- 361,037 361,037 -- American Century Balanced Fund -- 311,230 299,012 311,230 12,218 American Century-Benham Intermediate-Term Government Fund 933,495 -- 933,495 933,495 -- American Century-Benham Intermediate-Term Government Fund -- 1,152,164 1,161,304 1,152,164 (9,140) American Century Value Fund 1,085,453 -- 1,085,453 1,085,453 -- American Century Value Fund -- 825,992 722,229 825,992 103,763 American Century-Twentieth Century International Growth Fund 690,497 -- 690,497 690,497 -- American Century-Twentieth Century International Growth Fund -- 646,006 585,287 646,006 60,719 Barclays Equity Index 1,227,267 -- 1,227,267 1,227,267 -- Barclays Equity Index -- 931,599 763,191 931,599 168,408 SEI Trust Company Benham Stable Value Government Fund 4,240,290 -- 4,240,290 4,240,290 -- Benham Stable Value Government Fund -- 3,018,232 3,018,232 3,018,232 -- There were no category (i), (ii), or (iv) reportable transactions during 1997.
14 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the duly authorized Plan Administrator has executed this annual report. ARCH COAL, INC. EMPLOYEE THRIFT PLAN (successor by merger to the Ashland Coal, Inc. Employee Thrift Plan) By: /s/ Jeffry N. Quinn --------------------------------- Plan Administrator Date: June 29, 1998 INDEX TO EXHIBITS EXHIBIT ITEM 23 Consent of Independent Auditors
                                                                      EXHIBIT 23

                         CONSENT OF INDEPENDENT AUDITORS


We consent to the incorporation by reference in the Registration Statement (Form
S-8 No. 333-32777) pertaining to the Arch Coal, Inc. Employee Thrift Plan of our
report  dated June 25,  1998,  with  respect  to the  financial  statements  and
schedules of the Ashland Coal, Inc. Employee Thrift Plan included in this Annual
Report (Form 11-K) for the year ended December 31, 1997.

                                                           /s/ Ernst & Young LLP



Louisville, Kentucky
June 25, 1998