Yazar
john c lascola
2 cilt bulundu.
Cilt sonuçları
Comparison of aerial and ground surveying of subsidence over an active longwall
John C. LaScola · U.S. Dept. of the Interior, Bureau of Mines
12 sayfa · 1988
Longwall mining / Measurement / Mine subsidences / Pennsylvania / Safety measures
Assessing the methane hazard of gassy coals in storage silos
John C. LaScola · U.S. Dept. of the Interior, Bureau of Mines
Sayfa sayısı yok · 1981
Coal / Coalbed methane / Storage