Company:  ARCH COAL INC (ACI)
Form Type:  10-Q
Filing Date:  11/8/2012 
CIK:  0001037676 
Address:  CITY PLACE ONE STE 300
ARCH MINERAL CORP
 
City, State, Zip:  ST LOUIS, Missouri 63141 
Telephone:  (314) 994-2700 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$4.48  
Change: 
-0.07 (-1.54%)  
Trade Time: 
04:00 PM EST  
Market Cap: 
$951.15M
Description of Business
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  FORM 10-Q
    Part I
      Item 1. Financial Statements.
        INCOME STATEMENT
        BALANCE SHEET
        CASH FLOW
        Notes to Condensed Consolidated Financial Statements
          BALANCE SHEET
      Item 2. Management's Discussion and Analysis of Financial ...
      FINANCIAL STATEMENTS
        INCOME STATEMENT
        INCOME STATEMENT
      Item 3. Quantitative and Qualitative Disclosures About ...
      Item 4. Controls and Procedures.
    PART II
      Item 1. Legal Proceedings.
      Item 2. Unregistered Sales of Equity Securities and Use of ...
      Item 4. Mine Safety Disclosures
      Item 6. Exhibits.
    Signatures
  EXHIBIT 12.1
    RATIO COMPUTATION
  EXHIBIT 31.1
    Certification
  EXHIBIT 31.2
    Certification
  EXHIBIT 32.1
    Certification of Periodic Financial Reports
  EXHIBIT 32.2
    Certification of Periodic Financial Reports
  EXHIBIT 95
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