Browse TRAIL Inventories

Three coal mine gob degasification studies using surface boreholes and a bleeder system

Control of methane by ventilation of shafts during raise drilling

Building seals by pneumatic stowing in mine closure operations

Sealing openings in abandoned mines by pneumatic stowing

Long-term effectiveness of deep mine sealing at Moraine State Park, Butler County, Pa.

Quartz dust sources during overburden drilling at surface coal mines


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