Yazar
richard a allwes
4 cilt bulundu.
Cilt sonuçları
The Effects of a retreating longwall on a three-entry gate road system
Richard A. Allwes · U.S. Dept. of the Interior, Bureau of Mines
19 sayfa · 1985
Longwall mining / Pillaring (Mining) / Mine roof bolting / Gate roads (Mining)
Arch canopy verification tests
Richard A. Allwes · Bureau of Mines, U.S. Dept. of the Interior
26 sayfa · 1990
Mine roof control / Structural dynamics / Testing
Evaluation of structures for roof-fall areas
Richard A. Allwes · U.S. Dept. of the Interior, Bureau of Mines
31 sayfa · 1992
Metal arches / Mine roof control / Testing