Search U.S. government technical reports digitized or harvested by TRAIL.
Replacing brattice cloth at coal faces with air curtains and diffuser fans,a preliminary study
Parachute stopping :preliminary experiments
Brattice window method for measuring leakage through mine stoppings
Jet fan effectiveness as measured with SF₆ tracer gas
Methane accumulations in coal mine roof cavities
Dust protection afforded by enclosed cabs on surface and underground mine machinery