Arch Coal, Inc.
2010/11 Corporate Social Responsibility Report

GRI Index

This marks our third report published since 2007 and our first effort to adhere to GRI standards. We are developing our efforts to meet a growing number of GRI recommendations, and expect to further expand our report over time. In the table below, page numbers reference the GRI locations of the printed document.

Strategy and Analysis
1.1Message from the Chairman and CEOPages 2 and 3
Organizational Profile
2.1Name of the organizationPages 4 and 5
2.2Primary brands, productsPages 4 and 5
2.3Operational structurePages 4 and 5
2.4Location of headquartersSt. Louis, Mo., US
2.5Countries where the organization operatesPages 4 and 5
2.6Nature of ownership and legal formPages 4 and 5
2.7Markets servedPages 4 and 5
2.8Scale of the reporting organizationPages 4 and 5
2.9Significant changesPage 4
2.10Awards receivedPages 6-17
Report Parameters
3.1Reporting period2009-2010
3.2Date of most recent reportJuly 2009
3.3Reporting cycleBiennial
3.4Contact pointresponsible@archcoal.com
3.5Process for defining report contentMajor operating subsidiaries have been reported
3.6Boundary of the reportMajor operating subsidiaries have been reported
3.7Any specific limitations on the scope or boundary of the reportMajor operating subsidiaries have been reported
3.8Basis for reporting on joint ventures, subsidiaries, leased facilities, outsourced operations and other entitiesMajor operating subsidiaries have been reported
3.10Explanation of the effect of any re-statements of information provided in earlier reports, and the reasons for such re-statementN/A
3.11Significant changes from previous reporting periodsN/A
3.12GRI Content IndexCurrent page
Governance, Commitments and Engagement
4.1Governance structure of the organizationUnitary board structure. Committees include: Audit; Energy and Environmental Policy; Finance; Nominating and Corporate Governance; Personnel and Compensation
4.2Indicate whether the chair of the highest governance body is also an executive officerYes. Steven F. Leer serves as chairman and CEO of Arch Coal
4.3State the number of members of the highest governance body who are independent and/or non-executive membersShareholders elect 11 independent directors
4.4Mechanisms for shareholders and employees to provide recommendations or direction to the highest governance bodyPage 11 and http://investor.archcoal.com (corporate governance/confidential hotline)
4.8Internally developed statements of mission or values, codes of conduct, and principles relevant to economic, environmental and social performance, and the status of their implementation.Pages 1, 2 and 5
4.14List of stakeholder groups engaged by the organizationresponsible.archcoal.com
4.15Basis for identification and selection of stakeholders with whom to engageresponsible.archcoal.com
Environment
EN8Total water withdrawal by sourcePage 15 (partial)
EN10Percentage and total volume of water recycled and reusedPage 16 (partial)
EN13Habitats protected or restoredPage 15
EN21Total water discharge by quality and destinationPage 15 (partial)
EN22Total weight of waste by type and disposal methodPages 16 and 17 (partial)
EN24Weight of transported, imported, exported, or treated waste deemed hazardous under the terms of the Basel Convention Annex and percentage of transported waste shipped internationallyNone
Society
SO1Community impactsPages 18-22
SO3Percentage of employees trained in organization’s anti-corruption policies and proceduresPages 10 and 11
SO4Incidents of corruptionNone
Labor Practices and Decent Work
LA1Total workforce by employment type, employment contract, and regionPages 10 and 11 (partial)
LA4Percentage of employees covered by collective bargaining agreementsLess than 4% at 7/1/11
LA7Health and safety performancePages 8-9 (partial)
LA8Health programsPages 6-11
LA11Programs for skills management and lifelong learningPage 11, website
LA12Percentage of employees receiving regular performance and career development reviewsAll salaried employees participate in at least one annual performance review
Economic
EC1Direct economic value generated and distributed, including revenues, operating costs, employee compensation, donations and other community investments, retained earnings, and payments to capital providers and governmentsPage 22 and company’s 10K
EC3Coverage of the organization’s defined benefit plan obligations10K
EC8Development and impact of infrastructure investments and services provided primarily for public benefit through commercial, in-kind or pro bono engagementPages 18-23

The terms “we” and “our” refer to Arch Coal, Inc. and its subsidiary operations.