State Coal Fatality Rate Dropping As Mines Adopt Rock Dusting
West Virginia reports a dropping fatality rate as rock dusting expands in mines. Officials credit reduced chain explosions to limestone dust, with 1949 first quarter fatalities down from 59 to 48 and non fatal accidents down from 3652 to 203. A modern lab supports testing and demonstrations, and 88 percent of deep mine coal comes from rock dusted shafts.
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Join G. Morgan
West Virginia
State Department of Mines
Arcb J. Alexander
Alexander
Joseph Bierer
Bierer
Hruceton
Pittsburgh
U.S. Bureau of Mines
Manufacuuer
Sight Laboratory
Mining dust testing and safety measures update
Inspectors collect coal dust samples and ship them to a state lab for analysis. If non combustible material falls below 65 percent, the dust is deemed explosive and an allaying agent is advised. Lab uses a furnace with a volumeter for rapid analysis and recently installed gas testing equipment.
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