The Black Thunder coal mine in Wyoming is a historical powerhouse of black energy, but it raises urgent concerns about ...

Roof bolts are either point-anchored (tensioned) or full-length anchored (non-tensioned), depending upon the application. In the United States, coal mines must be roof-bolted. Dragline excavators are ...

Most of these draglines are diesel-powered. Draglines meant for the removal of overburden above coal or for tar-sand mining are amongst the largest vehicles ever constructed. These machines are ...

Coronado Curragh has been charged over the death of a dragline operator at one of its ... the death of a worker at its central Queensland coal mine. Clark Peadon, 54, died at the Curragh mine ...