SECURITIES AND EXCHANGE COMMISSION
                                 Washington, D.C. 20549
                              ----------------------------

                                       FORM 8-K

                                    CURRENT REPORT

                         Pursuant to Section 13 or 15(d) of the
                            Securities Exchange Act of 1934


Date of Report (Date of earliest event reported): October 21, 2003
                                                     (October 20, 2003)

                               Arch Coal, Inc.
               (Exact name of registrant as specified in its charter)

  Delaware                                1-13105                    43-0921172
(State or other jurisdiction      (Commission File Number)     (I.R.S. Employer
    of incorporation)                                        Identification No.)


                 One CityPlace Drive, Suite 300, St. Louis, Missouri 63141
                    (Address of principal executive offices) (Zip code)


        Registrant's telephone number, including area code: (314) 994-2700











                             Page 1 of 5 pages.
                     Exhibit Index begins on page 5.


Item 7 Financial Statements, ProForma Financial Information and Exhibits. See Exhibit Index at page 5 of this Report. Item 9. Regulation FD Disclosure. Item 12. Disclosure of Results of Operations and Financial Condition. The information in this Report is being furnished under Item 9, "Regulation FD Disclosure" and Item 12, "Disclosure of Results of Operations and Financial Condition." On October 20, 2003, Arch Coal, Inc. (the "Company"), announced via press release its earnings and operating results for the third quarter of 2003. A copy of the Company's press release is attached hereto and incorporated herein by reference in its entirety. The Company is also providing the following reconciliation of Adjusted EBITDA for its Arch Western Resources, LLC subsidiary: Three Months Ended Nine Months Ended September 30 September 30 ----------------------- --------------------------- 2003 2002 2003 2002 ----------- ----------- ------------ -------------- (Amounts in 000's) Net income $ 1,785 $ 2,600 $ 2,039 $ 533 Cumulative effect of accounting change - - 18,278 - Interest expense, net 8,425 7,988 21,481 23,025 Depreciation, depletion and amortization - Arch Western Resources 15,882 19,728 46,862 55,283 DD&A - Equity interest in Canyon Fuel Company, LLC 5,299 4,918 16,618 19,122 Other nonoperating expense 3,388 - 8,283 - ----------- ----------- ------------ -------------- Adjusted EBITDA $34,779 $ 35,234 $ 113,561 $ 97,963 =========== =========== ============ ============== Reconciliation of net income to income before other nonoperating expense and cumulative effect of accounting change Net income $ 1,785 $ 2,600 $ 2,039 $ 533 Cumulative effect of accounting change - - 18,278 - Other nonoperating expense 3,388 - 8,283 - ----------- ----------- ------------ -------------- Income before other nonoperating expense and cumulative effect of accounting change $ 5,173 $ 2,600 $ 28,600 $ 533 =========== =========== ============ ============== Page 2 of 5 pages. Exhibit Index begins on page 5

Note: Adjusted EBITDA is defined as net income before the effect of net interest expense; income taxes; our depreciation, depletion and amortization; our equity interest in the depreciation, depletion and amortization of Canyon Fuel Company, LLC; cumulative effect of accounting changes; and expenses resulting from early extinguishment of debt; and mark-to market adjustments in the value of derivative instruments. Adjusted EBITDA is not a measure of financial performance in accordance with generally accepted accounting principles, and items excluded to calculate Adjusted EBITDA are significant in understanding and assessing our financial condition. Therefore, Adjusted EBITDA should not be considered in isolation nor as an alternative to net income, income from operations, cash flows from operations or as a measure of our profitability, liquidity or performance under generally accepted accounting principles. We believe that Adjusted EBITDA presents a useful measure of our ability to service and incur debt based on ongoing operations. Furthermore, analogous measures are used by industry analysts to evaluate operating performance. Investors should be aware that our presentation of Adjusted EBITDA may not be comparable to similarly titled measures used by other companies. In accordance with General Instruction B.6 of Form 8-K, the information in this Current Report on Form 8-K, including Exhibit 99, shall not be deemed filed for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. Page 3 of 5 pages. Exhibit Index begins on page 5.

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Dated: October 20, 2003 ARCH COAL, INC. By: /s/ Janet L. Horgan Janet L.Horgan Assistant General Counsel and Assistant Secretary Page 4 of 5 pages. Exhibit Index begins on page 5.

EXHIBIT INDEX Exhibit No. Description 99 Press Release dated as of October 20, 2003 Page 5 of 5 pages.

Exhibit 99 News from Arch Coal, Inc. - -------------------------------------------------------------------------------- FOR FURTHER INFORMATION: Deck S. Slone Vice President, Investor and Public Relations (314) 994-2717 FOR IMMEDIATE RELEASE October 20, 2003 Arch Coal, Inc. Reports Third Quarter Results Highlights: o Income available to common shareholders of $9.3 million, or $.18 per share, vs. income of $1.6 million, or $.03 per share, in 3Q02 o Adjusted EBITDA of $50.9 million, vs. $59.3 million in 3Q02 o Total revenues of $370.3 million, vs. $400.8 million in 3Q02 o Coal sales of 25.3 million tons, vs. 28.7 million tons in 3Q02 St. Louis - Arch Coal, Inc. (NYSE:ACI) today reported that for its third quarter ended September 30, 2003, the company had income available to common shareholders of $9.3 million, or $.18 per share. Included in these results was a net gain of $8.4 million, or $.16 per share, related to mark-to-market adjustments and charges stemming from the recent termination of hedge accounting for certain interest rate swap agreements. In the third quarter of 2002, Arch had income of $1.6 million, or $.03 per share. "During the quarter, Arch's mining operations managed costs well despite reduced sales volumes stemming from a relatively mild summer, normally scheduled mine vacation shutdowns and three longwall moves," said Steven F. Leer, Arch Coal's president and chief executive officer. "Meanwhile, U.S. coal markets began a long-awaited rally, with coal prices moving up markedly and contract activity heating up as well." For the nine months ended September 30, 2003, Arch Coal had a loss available to common shareholders of $10.2 million, or $.19 per share, excluding severance costs of $2.6 million, a $3.7 million non-cash charge related to the cumulative effect of an accounting change resulting from the adoption of FAS 143, charges of $6.9 million related to the early extinguishment of debt and termination of hedge accounting, and an $11.3 million gain related to mark-to-market adjustments. That compares to a loss of $3.6 million, or $.07 per share, during the same period of 2002. Total revenues for the nine months were $1,122.9 million and coal sales totaled 73.6 million tons, vs. $1,143.7 million and 78.3 million tons in the comparable period of 2002. Adjusted EBITDA totaled $144.4 million for the first nine months of 2003, compared to $171.1 million in the same period of 2002.

Cost control efforts During the quarter, Arch's eastern operations recorded all-in costs of approximately $31.40 per ton, maintaining the improvements achieved in the second quarter despite an 11% decline in sales volumes. Arch's western operations effectively held the line on costs as well, after a more than 4% reduction in costs in the second quarter. "We continue to make good progress in our efforts to manage costs at all of our operations," Leer said. "Arch's mining operations already rank No. 1 in productivity among major producers in both the Powder River Basin and Central Appalachia for the most recent four quarters for which data is available. However, we expect to enhance our competitive position still further through additional cost reductions in coming quarters." Arch continues to pursue a very deliberate approach to cost-reduction efforts across the corporation. U.S. coal markets U.S. coal prices moved up strongly during the quarter, spurred by increased coal consumption at U.S. power plants, declining utility stockpile levels, and the continuing rationalization in eastern coal supply. "We continue to see many positive signs that point to a sustained rebound in U.S. coal markets," Leer said. "During the first half of 2003, coal consumption at U.S. power plants increased 3.7%, as utilities sought to maximize output from coal-fired units in the face of sharply higher natural gas prices and reduced nuclear availability." As a result of this increased consumption, Arch projects that coal stockpiles at U.S. power plants declined to approximately 120 million tons at the end of September, nearly 15% lower than at the same time last year. While the long-term outlook for increased U.S. coal production is positive, output from eastern coalfields has declined, as producers struggle with degraded reserve bases, high costs and a host of other pressures. Last year, U.S. coal production declined by an estimated 3.0%, driven principally by reduced eastern output. In 2003, that trend has continued, with total U.S. coal production down an estimated 2.2% year to date. "During the past 18 months, many traditional eastern coal producers have closed mines, filed for bankruptcy protection or even exited the business," Leer said. "We believe that this rationalization process will continue, which should translate into a stronger pricing environment for our productive and cost-competitive eastern operations."

Market activity While Arch has signed commitments for a small percentage of its uncommitted 2004 and 2005 tonnage in recent weeks, the company should benefit substantially from further movements in the market. At present, approximately 25% of Arch's expected 2004 production and 45% of its 2005 production is open to market-based pricing. "We are currently in the midst of negotiations with several large coal-burning utilities concerning tonnage for delivery in 2004 and beyond," Leer said. "However, we feel no sense of urgency about committing the remainder of our tonnage, and we would be very comfortable entering 2004 with a significant open position." With eastern low-sulfur coal production struggling, the market is likely to need every available ton of coal in 2004, according to Leer. "After an extended utility stockpile correction, we believe supply and demand are close to equilibrium," Leer said. Operating statistics Third Quarter 2003 Regional Analysis: Eastern Operations Western Operation Total - ------------------------------ ----------------------------- ------------------------------ -------------------------- Tons sold (in mm) 7.2 18.0 25.3 - ------------------------------ ----------------------------- ------------------------------ -------------------------- Sales price per ton $ 30.80 $ 7.28 $14.03 - ------------------------------ ----------------------------- ------------------------------ -------------------------- Cost per ton $ 31.40 $ 6.56 $13.71 - ------------------------------ ----------------------------- ------------------------------ -------------------------- Margin $ (.60) $ .71 $ .32 - ------------------------------ ----------------------------- ------------------------------ -------------------------- Note: Western operations data do not include the results of 65%-owned Canyon Fuel Company, which is accounted for on the equity method. Capital Spending and DD&A (in millions): Q3 2003 Q3 2002 FY 2003 (projected) - ------------------------------- ---------------------------- ---------------------------- ---------------------------- Capital spending $28.0 $29.6 $140 - ------------------------------- ---------------------------- ---------------------------- ---------------------------- DD&A $44.3 $49.2 $180 - ------------------------------- ---------------------------- ---------------------------- ---------------------------- Note: Actual and projected data on capital spending and depreciation, depletion and amortization include Arch's ownership percentage in Canyon Fuel Company. Safety and environmental stewardship During the quarter, several Arch Coal subsidiaries received honors for safety and reclamation excellence. Coal-Mac's Phoenix mine was named one of the five safest surface coal mines in 2002 by the Mine Safety and Health Administration for working more than 300,000 employee-hours without a lost time injury. (In 2002, Thunder Basin's Black Thunder mine won the award as the nation's safest surface mine the previous year.) In addition, two Arch Coal subsidiaries - Catenary Coal and Coal-Mac - received national honors for

environmental stewardship and community outreach by the National Association of State Land Reclamationists. "We regard safety and environmental stewardship as cornerstones of our future success, and we take great pride in the accomplishments of our operating subsidiaries in these crucial areas of performance," Leer said. Looking ahead "With the economy showing signs of renewed vigor, the prospects for increased demand for low-cost electricity from coal appear bright," Leer said. "We believe Arch Coal is well positioned to capitalize on this improving market environment." Arch currently expects earnings of between $.05 and $.15 per share in the fourth quarter of 2003, excluding charges related to the termination of hedge accounting and future mark-to-market adjustments. The pending Triton acquisition should further strengthen Arch's competitive position, Leer said. "We look forward to integrating the Triton assets into our existing operations," he added. "We are confident that this acquisition will enable us to take a dramatic step forward in our ability to serve our customers and capture new cost-saving opportunities." The Triton acquisition is in the midst of the regulatory review process. A conference call concerning third quarter earnings will be webcast live today at 11 a.m. Eastern. The conference call can be accessed via the "investor" section of the Arch Coal Web site (www.archcoal.com). Arch Coal is the nation's second largest coal producer, with subsidiary operations in West Virginia, Kentucky, Virginia, Wyoming, Colorado and Utah. Through these operations, Arch Coal provides the fuel for approximately 6% of the electricity generated in the United States. Forward-Looking Statements: Statements in this press release which are not statements of historical fact are forward-looking statements within the "safe harbor" provision of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on information currently available to, and expectations and assumptions deemed reasonable by, the company. Because these forward-looking statements are subject to various risks and uncertainties, actual results may differ materially from those projected in the statements. These expectations, assumptions and uncertainties include: the company's expectation of continued growth in the demand for electricity; belief that legislation and regulations relating to the Clean Air Act and the relatively higher costs of competing fuels will increase demand for its compliance and low-sulfur coal; expectation of continued improved market conditions for the price of coal; expectation that the company will continue to have adequate liquidity from its cash flow from operations, together with available borrowings under its credit facilities, to finance the company's working capital needs; a variety of operational, geologic, permitting, labor and weather related factors; and the other risks and uncertainties which are described from time to time in the company's reports filed with the Securities and Exchange Commission.

Arch Coal, Inc. and Subsidiaries Condensed Consolidated Statements of Operations (In thousands, except per share data) Three Months Ended Nine Months Ended September 30 September 30 ------------------------------------------------------- 2003 2002 2003 2002 ------------------------------------------------------- (Unaudited) (Unaudited) Revenues Coal sales $ 354,276 $ 386,298 $ 1,060,558 $ 1,103,882 Income from equity investments 5,657 1,222 28,958 2,291 Other revenues 10,343 13,235 33,428 37,523 ------------------------------------------------------- 370,276 400,755 1,122,944 1,143,696 ------------------------------------------------------- Costs and expenses Cost of coal sales 346,142 368,054 1,052,105 1,056,194 Selling, general and administrative expenses 11,082 9,734 34,845 29,675 Amortization of coal supply agreements 2,890 5,385 13,209 15,872 Other expenses 3,636 7,484 13,157 20,856 ------------------------------------------------------- 363,750 390,657 1,113,316 1,122,597 ------------------------------------------------------- Income from operations 6,526 10,098 9,628 21,099 Interest expense, net: Interest expense (13,187) (13,425) (36,407) (39,783) Interest income 425 217 1,251 799 ------------------------------------------------------- (12,762) (13,208) (35,156) (38,984) ------------------------------------------------------- Other non-operating income (expense): Expenses resulting from early debt extinguishment and termination of hedge accounting for interest rate swaps (2,066) - (6,889) - Other non-operating income 10,441 - 11,314 - ------------------------------------------------------- 8,375 - 4,425 - ------------------------------------------------------- Income (loss) before income taxes and cumulative effect of accounting change 2,139 (3,110) (21,103) (17,885) Benefit from income taxes (8,910) (4,750) (17,510) (14,250) ------------------------------------------------------- Income (loss) before cumulative effect of accounting change 11,049 1,640 (3,593) (3,635) Cumulative effect of accounting change, net of taxes - - (3,654) - ------------------------------------------------------- Net income (loss) 11,049 1,640 (7,247) (3,635) Preferred stock dividends (1,797) - (4,792) - ------------------------------------------------------- Net income (loss) available to common shareholders $ 9,252 $ 1,640 $ (12,039) $ (3,635) ======================================================= Earnings per common share Earnings (loss) before cumulative effect of accounting change $ 0.18 $ 0.03 $ (0.16) $ (0.07) Cumulative effect of accounting change - - (0.07) - ------------------------------------------------------- Basic and diluted earnings (loss) per common share $ 0.18 $ 0.03 $ (0.23) $ (0.07) ======================================================= Weighted average shares outstanding Basic 52,520 52,380 52,441 52,371 Diluted 52,824 52,561 52,441 52,371 ======================================================= Dividends declared per common share $ 0.0575 $ 0.0575 $ 0.1725 $ 0.1725 ======================================================= Adjusted EBITDA (A) $ 50,871 $ 59,262 $ 144,388 $ 171,056 ======================================================= (A) Adjusted EBITDA is defined as net income before the effect of net interest expense; income taxes; our depreciation, depletion and amortization; our equity interest in the depreciation, depletion and amortization of Canyon Fuel Company, LLC; cumulative effect of accounting changes; expenses resulting from early extinguishment of debt; and mark-to-market adjustments in the value of derivative instruments. Adjusted EBITDA is not a measure of financial performance in accordance with generally accepted accounting principles, and items excluded to calculate Adjusted EBITDA are significant in understanding and assessing our financial condition. Therefore, Adjusted EBITDA should not be considered in isolation nor as an alternative to net income, income from operations, cash flows from operations or as a measure of our profitability, liquidity or performance under generally accepted accounting principles. We believe that Adjusted EBITDA presents a useful measure of our ability to service and incur debt based on ongoing operations. Furthermore, analogous measures are used by industry analysts to evaluate operating performance. Investors should be aware that our presentation of Adjusted EBITDA may not be comparable to similarly titled measures used by other companies. The table below shows how we calculate Adjusted EBITDA. Three Months Ended Nine Months Ended September 30 September 30 ------------------------------------------------------- 2003 2002 2003 2002 ------------------------------------------------------- Net income (loss) $ 11,049 $ 1,640 $ (7,247) $ (3,635) Cumulative effect of accounting change - - 3,654 - Benefit from income taxes (8,910) (4,750) (17,510) (14,250) Interest expense, net 12,762 13,208 35,156 38,984 Depreciation, depletion and amortization - Arch Coal, Inc. 39,046 44,246 118,142 130,835 DD&A - Equity interest in Canyon Fuel Company, LLC 5,299 4,918 16,618 19,122 Expenses from early debt extinguishment and other nonoperating (8,375) - (4,425) - ------------------------------------------------------- Adjusted EBITDA $ 50,871 $ 59,262 $ 144,388 $ 171,056 =======================================================

Arch Coal, Inc. and Subsidiaries Condensed Consolidated Balance Sheets (In thousands) September 30, December 31, 2003 2002 ------------------------------------------- (Unaudited) Assets Current assets Cash and cash equivalents $ 125,551 $ 9,557 Trade receivables 122,281 135,903 Other receivables 23,292 30,927 Inventories 76,496 66,799 Prepaid royalties 3,934 4,971 Deferred income taxes 27,775 27,775 Other 10,642 15,781 ------------------------------------------- Total current assets 389,971 291,713 ------------------------------------------- Property, plant and equipment, net 1,308,865 1,284,968 ------------------------------------------- Other assets Prepaid royalties 67,678 51,078 Coal supply agreements 9,810 59,240 Deferred income taxes 245,325 221,116 Equity investments 227,274 231,551 Other 62,419 43,142 ------------------------------------------- 612,506 606,127 ------------------------------------------- Total assets $ 2,311,342 $ 2,182,808 =========================================== Liabilities and stockholders' equity Current liabilities Accounts payable $ 97,499 $ 113,527 Accrued expenses 158,074 133,287 Current portion of debt 69 7,100 ------------------------------------------- Total current liabilities 255,642 253,914 Long-term debt 700,071 740,242 Accrued postretirement benefits other than pension 344,921 324,539 Asset retirement obligations 144,112 117,804 Accrued workers' compensation 80,027 80,985 Other noncurrent liabilities 134,632 130,461 ------------------------------------------- Total liabilities 1,659,405 1,647,945 ------------------------------------------- Stockholders' equity Preferred stock 29 - Common stock 529 527 Paid-in capital 977,113 835,763 Retained deficit (275,038) (253,943) Treasury stock, at cost (5,047) (5,047) Accumulated other comprehensive loss (45,649) (42,437) ------------------------------------------- Total stockholders' equity 651,937 534,863 ------------------------------------------- Total liabilities and stockholders' equity $ 2,311,342 $ 2,182,808 =========================================== NOTE: Certain amounts in the December 31, 2002 balance sheet have been reclassified to conform with the classifications in the 2003 balance sheet with no effect on previously reported stockholders' equity.

Arch Coal, Inc. and Subsidiaries Condensed Consolidated Statements of Cash Flows (In Thousands) Nine Months Ended September 30, ----------------------------------------------- 2003 2002 --------------- --------------- (Unaudited) Operating activities Net loss $ (7,247) $ (3,635) Adjustments to reconcile to cash provided by operating activities: Depreciation, depletion and amortization 118,142 130,835 Prepaid royalties expensed 10,206 5,738 Accretion on asset retirement obligations 10,148 - Net gain on disposition of assets (3,174) (501) Income from equity investments (29,153) (2,291) Net distributions from equity investments 32,291 15,177 Cumulative effect of accounting change 3,654 - Other nonoperating (income) expense (4,425) - Changes in: Receivables 22,004 7,119 Inventories (9,446) (13,577) Accounts payable and accrued expenses (8,146) 403 Income taxes (18,868) (14,406) Accrued postretirement benefits other than pension 20,381 (1,597) Asset retirement obligations (12,771) 6,650 Accrued workers' compensation benefits (958) 3,947 Other (8,382) (4,113) --------------- --------------- Cash provided by operating activities 114,256 129,749 --------------- --------------- Investing activities Additions to property, plant and equipment (91,652) (117,363) Proceeds from dispositions of property, plant and equipment 3,325 2,231 Proceeds from coal supply agreements 52,548 - Additions to prepaid royalties (25,768) (21,717) --------------- --------------- Cash used in investing activities (61,547) (136,849) --------------- ---------------

Financing activities Net (payments on) proceeds from revolver and lines of credit (72,202) 24,936 Payments on term loans (675,000) - Proceeds from issuance of senior notes 700,000 - Debt financing costs (18,246) (8,228) Proceeds from sale and leaseback of equipment - 9,213 Reductions of obligations under capital lease - (7,778) Dividends paid (12,647) (9,033) Proceeds from issuance of preferred stock 139,024 - Proceeds from sale of common stock 2,356 313 --------------- --------------- Cash provided by financing activities 63,285 9,423 --------------- --------------- Increase in cash and cash equivalents 115,994 2,323 Cash and cash equivalents, beginning of period 9,557 6,890 --------------- --------------- Cash and cash equivalents, end of period $ 125,551 $ 9,213 =============== =============== Canyon Fuel Company cash flow information (Arch Coal ownership percentage) Depreciation, depletion and amortization 16,618 19,122 Additions to property, plant and equipment (8,483) (13,353)