A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Quarrying and crushing methods and costs at avon mountain trap rock quarry of atlas sand, gravel and stone co., West Hartford, Conn
Quarry is 8 mi west of Hartford, Conn; dense fine-grained blue trap rock, sp gr 2.95, hard and brittle; irregular surface overburden, averaging 3 ft clay soil; stripping with 1/2 yd gasoline shovel; drill holes 20 to 25 ft deep, blasted with 60% dynamite; jaw and gyratory crushers; vibrating screens; costs total $0.547 per ton.
Quarrying and crushing methods and costs at avon mountain trap rock quarry of atlas sand, gravel and stone co., West Hartford, Conn
Quarry is 8 mi west of Hartford, Conn; dense fine-grained blue trap rock, sp gr 2.95, hard and brittle; irregular surface overburden, averaging 3 ft clay soil; stripping with 1/2 yd gasoline shovel; drill holes 20 to 25 ft deep, blasted with 60% dynamite; jaw and gyratory crushers; vibrating screens; costs total $0.547 per ton.
Quarrying and crushing methods and costs at avon mountain trap rock quarry of atlas sand, gravel and stone co., West Hartford, Conn
U S Bur Mines -- Information Cir
Dunning, J.S. (author)
1936
7 pages
Report
English
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