Report on Coal Technology

1100 RING BUILDING 1974 Coal Convention ALLEN OVERTON American Mining Congress Ampacities appropriate credit line Batac belt Bureau of Mines cable circuit clean coal Coal Company coal industry coal mining coal waste conductor CONGRESS 1100 RING continuous miner conveyor cost efficiency energy entry environmental equipment ESTABLISHED 1897 excerpts or summaries face Federal feet Figure float dust geophone ground monitoring haulage Inland Steel Company installed Knife River land reclamation lignite line is welcomed located Longwall Longwall mining machine material methane million tons MINING CONGRESS 1100 moisture Montana operation overburden Pittsburgh preparation plant President Publication problems publication in full Publication of excerpts pump pyrite raw coal reclamation rock dust rock noise roof bolts roof support scrubber seam slope slurry spray sulfur surface mining tests underground ventilation voltage volts Washington West Virginia Wyoming yes yes