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View of a row of boilers and equipment in an underground mine.

685. Boilers in a Coal Mine

Continuous mining machine at work.

686. Continuous Miner in a Tunnel Approximately 4 Feet High

Shuttle car in an underground mine, loaded with coal.

687. Loaded Shuttle Car

'Modified longwall mining with a German coal planer. Progress report 2: Completion of mining in three adjacent panels in the Pocahontas no. 4 coal bed, Helen, W. Va.' Please give credit to the Bureau of Mines, United States, Department of Interior.

688. Interior of a Coal Mine with Roof Supports Along Longwall Face

Close view of an electric motor at a coal mine site in Thomas, W. Va.

689. Electric Motor, Thomas, W. Va.

Close view of a conveyor and engine at a coal mine machine shop in Thomas, W. Va.

690. Mining Machinery, Thomas, W. Va.

View of a conveyor in a machine shop at a coal mine in Thomas, W. Va.

691. Mining Machinery, Thomas, W. Va.

Close view of a conveyor at a coal mine shop in Thomas, W. Va.

692. Mining Machinery, Thomas, W. Va.

693. Coal on Conveyor Belt at Jamison No. 9 Mine

694. Mining Equipment at Fairmont Machinery Company

Continuous miner in action.

695. Lee Norse CM28E Continuous Miner

696. Mechanic Working in the Mathies Underground Machine Shop