Frictional Ignition with Coal Mining Bits Welby G. Courtney Published: 1990 Total Pages: 36 Get eBook
Frictional Ignition of Methane by Continuous Mining Machines in Underground Coal Mines Edward M. Kawenski Published: 1979 Total Pages: 18 Get eBook
Reduction in Frictional Ignition Due to Conical Coal-cutting Bits Lung Cheng Published: 1987 Total Pages: 20 Get eBook
Frictional Ignition of Natural Gas-air Mixtures by Alternative Coal-cutter Bit Shank Materials L. Garner McDonald Published: 1992 Total Pages: 24 Get eBook
Frictional Ignition of Gas by Mining Machines Irving Hartmann Published: 1955 Total Pages: 26 Get eBook
Dual Leaching Method for Recovering Silver and Manganese from Domestic Manganiferrous Silver Deposits John E. Pahlman Published: 1987 Total Pages: 392 Get eBook
Historical Summary of Coal Mine Explosions in the United States, 1959-81 Published: 1983 Total Pages: 64 Get eBook
