Shaft-sinking practices and costs
By: by E.D. Gardner and J. Fred Johnson.
Contributors: Johnson, J. Fred (John Frederick), 1887-
Series: United States. Bureau of Mines. Bulletin ;; 357
Publisher: U.S. G.P.O.
Published: 1932
Place of publication: Washington
Language: eng
Number of pages: 110
Subjects: Shaft sinking.
Notes: Includes bibliographical references and index.