2019

part one

• item 1
• BUSINESS

• item 1a
• RISK FACTORS

• item 1b
• UNRESOLVED STAFF COMMENTS

• item 2
• PROPERTIES

• item 3
• LEGAL PROCEEDINGS

• item 4
• MINE SAFETY DISCLOSURE

PART II

• item 5
• MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

• item 6
• SELECTED CONSOLIDATED FINANCIAL DATA

• item 7
• MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

• item 7a
• QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

• item 8
• FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

• item 9
• CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

• item 9a
• CONTROLS AND PROCEDURES

• item 9b
• OTHER INFORMATION

PART III

• item 10
• DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

• item 11
• EXECUTIVE COMPENSATION

• item 12
• SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

• item 13
• CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

• item 14
• PRINCIPAL ACCOUNTING FEES AND SERVICES

PART IV

• item 15
• EXHIBITS, FINANCIAL STATEMENT SCHEDULES

• item 16
• FORM 10-K SUMMARY