Yazar
j drew potts
2 cilt bulundu.
Cilt sonuçları
Respirable dust sources and controls on continuous auger mining sections
J. Drew Potts · U.S. Dept. of the Interior, Bureau of Mines
Sayfa sayısı yok · 1989
Coal augers / Coal mines and mining / Dust control
Dust considerations when using belt entry air to ventilate work areas
J. Drew Potts · U.S. Dept. of the Interior, Bureau of Mines
12 sayfa · 1992
Belt conveyors / Mine dusts / Mine ventilation