State regulations governing use of trolley wires in mines [microform]

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Bibliographic Details
Other Authors:	Ilsley, L. C. (Lee Clyde), 1880-, Kearns, Raymond Arthur, 1891-
Format:	Government Document Microfilm Book
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1929.
Series:	Information circular (United States. Bureau of Mines) ; 6220.
Subjects:	Cables. Mines and mineral resources > Equipment and supplies.

Norlin Library - Government Information - Microform

Holdings details from Norlin Library - Government Information - Microform
Call Number:	EBD C22.11-6220
EBD C22.11-6220	Restricted Place a Hold