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You searched for: All Subjects Tunnels--Safety measures. Remove constraint All Subjects: Tunnels--Safety measures. Subject Topical Tunnels--Safety measures. Remove constraint Subject Topical: Tunnels--Safety measures.
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1. State regulations pertaining to the use of internal-combustion engines in coal and metal mines and in tunnels.

Creator Personal:
Gleim, E. J. (Ernest J.), Ilsley, L. C. (Lee Clyde), 1880-
Title:
State regulations pertaining to the use of internal-combustion engines in coal and metal mines and in tunnels.
Call Number:
P19468
Date:
1938
Description:

Serial issue. Issued as: United States. Bureau of Mines. Information circular, 7019 (1938:June).

Subject Topical:
Tunnels--Safety measures., Mine safety--United States., Internal combustion engines--Safety measures.
All:
Tunnels--Safety measures., Mine safety--United States., Internal combustion engines--Safety measures.