Modern techniques and equipment have made significant improvements in production efficiency as well as safety. The principle of longwall mining is the use of a large cutting head or shearer which ...

They plan to use a nontraditional but highly efficient process called “longwall” mining that will cause ... the earth when coal is dug away as mine equipment eats through the substrata.

The Mine Safety and Health Administration (MSHA) issued the final rule permitting the use of high-voltage longwall mining equipment in underground coal mines. Applicable to longwall equipment that ...

Any downtime is a critical factor for longwall mining production, as the equipment moves from one mined-out panel to the next. A face move typically takes between 30 and 45 days, during which no ...

“We are pleased that our longwall equipment will be the workhorse recovering this very thick seam.” Each of the two identical sets of longwall mining equipment includes a Cat EL1000 ...

The tax breaks apply to the company's longwall mining equipment and will be worth about $288,000 in 2013, with the amount tapering in future years as the breaks phase out, County Treasurer Max ...

Each of these dysfunctional systems funnel water to the longwall mining machine that investigators ... potential fires in or on the body of the equipment protected. A fire suppression system ...

Longwall equipment, which runs 24 hours a day ... professor and chair of mining engineering at West Virginia University, and an expert in mine safety, "it would explode." Coal itself is a fuel ...

It was mid-afternoon on the Monday after Easter, April 5, 2010, when a 1,000-foot longwall shearer, a massive piece of industrial coal-mining equipment, bit into sandstone, kicking up sparks and ...

Crews are moving the proper monitoring equipment and traffic signs into place along Interstate 70 in Ohio County, W.Va., between the Pennsylvania state line and the visitors center as Tunnel Ridge ...