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Mining Equipment

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Highwall Miner
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Highwall Mining is an efficient,  proven and durable method for mining coal from outcropping horizontal seams, in which an unmanned continuous miner is driven underground and operated in front of the highwall. The highwall mining machine stands on the pit floor, or on a bench, in front of the exposed seam and makes long parallel rectangular drives into the coal seam. A remote-operated cutter module is pushed into the seam by a string of push beams (unmanned coal-conveying elements) that transport the coal back to the entry of the drive onto a stockpile. The whole mining cycle is completed by a 3 to 4-man crew, with no personnel going underground at any time.

 

Highwall Miner Features/Components

 

The Bucyrus Highwall Miner is equipped with interchangeable electric cutterhead modules to facilitate mining of varying coal seams heights from 28 inches (71.1 cm) to 15 feet (4.6 m). Low seam cutterhead modules can mine seams from 28-64 inches (71.1 - 162.3 cm), while medium and high seam modules can mine up to 15 feet (4.6 m).

The cutterhead module attaches to the powerhead assembly in the center of the machine. Two hydraulically powered cylinders provide 380,000 pounds (172.4 metric tons) of force to cut into the coal seam - reaching depths over 1,000 feet (304.8 m).

The cutting cycle of the electric cutterhead is fully automated. As the coal seam varies, the machine operator is able to adjust the machine function while in automatic mode. This proven technology allows the cutterhead to accurately follow the coal seam and produce a cleaner product.
 
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