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Precast concrete construction
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Mine safety

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1.
Design and development of precast concrete mine supports : a progress report
Author
Krempasky, George T.
Published
Washington, D.C. : U.S. Bureau of Mines, 1963.
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
2.
Installation and evaluation of precast concrete mine supports : a progress report
Author
Krempasky, George T.
Published
Washington, D.C. : United States Bureau of Mines, 1963.
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online