Professional Certifications of R. Larry Grayson

• Registered professional mining engineer in Pennsylvania (No. PE-031071-E; March, 1982), West Virginia (No. 9541; June, 1984) and Missouri (No. E-28427; December, 1996).
• Certified in Pennsylvania as Mine Foreman (No. 966; November, 1979) and as Mine Examiner (No. 1766; March, 1979).
• Previously certified as MSHA Part 48 Instructor and Impoundment Inspector.

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