Methods and costs of sinking a shaft through a fractured, water-bearing formation at Friedensville, Pennsylvania.
Contributors: Hastings, W.; Kane, F. J.
Series: Information circular (United States. Bureau of Mines) -- 7680
Publisher: U.S. Dept. of the Interior
Published: 1954
Place of publication: Washington, DC
Language: eng
Number of pages: 18
Subjects: Shaft sinking.
Notes: Bibliogr.

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