Use of Torque Wrench to Determine Load in Roof Bolts
Subtitle: Part 2: Expansion-Type Three-Quarter Inch Bolts.
Contributors: Barry, A.; Panek, L.; Mccormick, J.
Series: Report of investigations (United States. Bureau of Mines) -- 5080
Publisher: s.n
Published: 1954
Place of publication: S.l
Language: eng
Notes: 1