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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.

Published Year

• 1930-1939 (1) *

Subject

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

Author

• Worthen, A. L. (1) *

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