Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Quarrying massive granite formation in Virginia
John H. Kerr Dam, in Mecklenburg County, Va, 2785-ft concrete structure of gravity type, is 144 ft high; adjacent earth wing is 45 ft high; 650,000 cu yd of stone were taken from quarry with 20-ft working face; holes for blasting were drilled 20 ft deep, loaded with 60% ammonia gelatin dynamite in bottom and 40% ammonia gelatin dynamite on top.
Quarrying massive granite formation in Virginia
John H. Kerr Dam, in Mecklenburg County, Va, 2785-ft concrete structure of gravity type, is 144 ft high; adjacent earth wing is 45 ft high; 650,000 cu yd of stone were taken from quarry with 20-ft working face; holes for blasting were drilled 20 ft deep, loaded with 60% ammonia gelatin dynamite in bottom and 40% ammonia gelatin dynamite on top.
Quarrying massive granite formation in Virginia
Explosives Engr
McCall, R.W. (Autor:in)
Explosives Engineer ; 31
1953
3 pages
Aufsatz (Zeitschrift)
Englisch
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