Safety factors in construction and ventilation : Wawona vehicular tunnerl, Yosemite national park, Calif. / by S.H. Ash.
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| Other title: | Safety factors in Wawona vehicular tunnel, Calif. |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. Govt. Print. Off,
1940.
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| Series: | Technical paper (United States. Bureau of Mines) ;
608. Technical paper / [United States] Department of the Interior, Bureau of Mines ; 608. |
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| Item Description: | At head of title: United States Dept. of the interior. Harold L. Ickes, secretary. Bureau of mines, John. W. Finch, director. Running title: Safety factors in Wawona vehicular tunnel, Calif. |
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| Physical Description: | iii, 34 pages : tables, diagrams, plates, 2 folded plans ; 23 cm. |