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Quarrying and crushing methods and costs at the Plainville, (Conn.,) trap-rock quarry of the New Haven Trap Rock Co., New Britain, Conn.

Quarrying and crushing methods and costs at the Avon Mountain trap rock quarry of the Atlas Sand, Gravel & Stone Co., West Hartford, Conn.

Published Year

• 1930-1939 (2) *

Subject

• Quarries and quarrying--Connecticut (2) *
• Quarries and quarrying--Connecticut--Cost of operation (1)

Author

• Dunning, J. S. (1)
• Worthen, A. L. (1)

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