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Estimate of Known Recoverable Reserves of Coking Coal in McDowell County, West Virginia

Estimate of Known Recoverable Reserves of Coking Coal in Wyoming County, West Virginia

Estimate of Known Recoverable Reserves of Coking Coal in Mingo County, West Virginia

Estimate of Known Recoverable Reserves of Coking Coal in Mercer County, West Virginia

Estimate of Known Recoverable Reserves of Coking Coal in Logan County, West Virginia

Use of a continuous borer in mining pitching anthracite beds


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