Modern automatic electrically controlled elevators for transporting men at two coal mines in Western Pennsylvania

Main Author: Holcomb, J. W.
Other Authors: United States. Bureau of Mines.
Format: Book
Language: English
Published: [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1952.
Physical Description: 5 pages : illustrations ; 27 cm.
Series: Information circular (United States. Bureau of Mines) ; 7628.
Subjects:
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245 1 0 |a Modern automatic electrically controlled elevators for transporting men at two coal mines in Western Pennsylvania /  |c by J.W. Holcomb. 
264 1 |a [Washington, D.C.] :  |b U.S. Dept. of the Interior, Bureau of Mines,  |c 1952. 
300 |a 5 pages :  |b illustrations ;  |c 27 cm. 
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490 1 |a Information circular / United States. Bureau of Mines ;  |v 7628. 
650 0 |a Hoisting machinery  |z Pennsylvania. 
650 0 |a Elevators. 
650 0 |a Coal mines and mining  |z Pennsylvania. 
650 7 |a Coal mines and mining.  |2 fast. 
650 7 |a Elevators.  |2 fast. 
650 7 |a Hoisting machinery.  |2 fast. 
651 7 |a Pennsylvania.  |2 fast. 
710 1 |a United States.  |b Bureau of Mines. 
776 0 8 |i Online version:  |a Holcomb, J. W.  |t Modern automatic electrically controlled elevators for transporting men at two coal mines in Western Pennsylvania.  |d [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1952  |w (OCoLC)609227477. 
830 0 |a Information circular (United States. Bureau of Mines) ;  |v 7628. 
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