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Development of a rotary test drill
Limestone and dolomite
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Published Year
1950-1959 (2) *
Subject
Mineral industries (2) *
Mines and mineral resources (2)
Dolomite (1)
Drilling and boring (1)
Limestone (1)
Mining engineering (1)
Author
Bowles, Oliver, (1)
Brackel, Lewis H. (1)
Wright, Fred D. (1)
