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'Coal at all White Oak shafts mines is handled on self dumping cages, which handle the coal uniformly and with a minimum of breakage. Note how evenly the coal is flowing from the mine car. Much more rapid of course than the picture indicates, but it shows how well designed the equipment must be to handle the coal in such splendid manner.'

2701. Self Dumping Cages

The heating system is used for lamphouse, bathhouse, shop and warehouse.

2702. Ireland Mine Shamrock Portal Automatic Coal-Fired Heating System

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

2703. Boilers in a Coal Mine

Miner watches as coal loads into a shuttle car.

2704. Shuttle Car Being Loaded

Technician views equipment in a mine lab.

2705. Coal Mine Lab

Coal cutting machine digs into the coal seam.

2706. Coal Cutting Machine

Continuous mining machine at work.

2707. Continuous Miner in a Tunnel Approximately 4 Feet High

2708. Jeffrey Loading Machine Emptying Coal into a New 11-Ton Steel Mine Car at Mine No. 32

2709. Loading Coal in an Unidentified MIne

Miner watches as coal loads into a shuttle car.

2710. Shuttle Car Being Loaded

Two miners use equipment to secure the roof at the Pursglove No. 15 mine.

2711. Miners Roof Bolting in Pursglove No. 15 Coal Mine

Shuttle car in an underground mine, loaded with coal.

2712. Loaded Shuttle Car