Yazar
Welby G Courtney
4 cilt bulundu.
Cilt sonuçları
Frictional ignition with coal mining bits
Welby G. Courtney · Dept. of the Interior
25 sayfa · 1990
Coal-cutting bits / Combustion / Friction / Methane / Testing
Deposition of respirable coal dust in an airway
Welby G. Courtney · U.S. Dept. of the Interior, Bureau of Mines
10 sayfa · 1986
Coal mines and mining / Dust control / Mine ventilation
Dust deposition in coal mine airways
Welby G Courtney · U.S. Dept. of the Interior, Bureau of Mines
15 sayfa · 1982
Mine dusts / Coal mines and mining / Dust control
Effect of water sprays for respirable dust suppression with a research continuous mining machine
Welby G Courtney · Dept. of the Interior, Bureau of Mines
10 sayfa · 1978
Dust control / Coal mines and mining / Coal-mining machinery