Overview of Current U.S. Longwall Gateroad Support Practices

By Morgan M. Sears, Ph.D., mining engineer, ground control branch, NIOSH; Ihsan B. Tulu, Ph.D., associate service fellow, NIOSH, Pittsburgh Mining Research Division; and Gabriel Esterhuizen, Ph.D., senior scientist, NIOSH, Pittsburgh Mining Research Division In 2015,...

Longwall Top Coal Caving at the Broadmeadow Mine

By Matt Jones, longwall superintendent Broadmeadow mine, BHP Billiton Mitsubishi Alliance (BMA); Kevin Meyer, longwall maintenance superintendent, Broadmeadow mine; and Brett Moule, longwall applications, Cat Global Mining The Goonyella Middle Seam, located in the...

Ultra-length Longwall Panels: Critical Factors and Issues

By Robert Ochsner, chief engineer, Signal Peak Energy Signal Peak Energy is the only underground coal mine in Montana and it started longwall mining operations in 2009 and is presently mining its sixth panel. These panels are 1,250-ft wide and typically vary between...

Monster Wall

By Christopher Popp, shift supervisor, Enlow Fork mine, CNX Coal Resources; Jamie Wilson, lead shift maintenance foreman, Enlow Fork mine, CNX Coal Resources; and Andrew Yackuboskey, longwall section foreman, Enlow Fork mine, CNX Coal Resources This presentation will...
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