Yazar
Guy Norman Bjorge
2 cilt bulundu.
Cilt sonuçları
The Homestake enterprise in the Black Hills of South Dakota
Guy Norman Bjorge · Newcomen Society of England, American Branch
28 sayfa · 1947
Gold mines and mining / Homestake / Homestake Mining Company / World War, 1939-1945 / Aerial operations
Second report on the Morro Velho mine
Greton. L. C., Guy Norman Bjorge, Saint John d'El Rey Mining Company (Firm) · St. John del Rey Mining Company, LTD.
93 sayfa · 1931
Gold mines and mining / Mines and mineral resources / Mining geology / Morro Velho Mine (Brazil)