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Blasting practices as they affect the roof of coal mines in Ohio, Pennsylvania, and West Virginia / by J.N. Geyer.

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Bibliographic Details
Online Access:	Search for the full-text version of this title in HathiTrust
Main Author:	Geyer, John Nicholas, 1896-
Corporate Author:	United States. Bureau of Mines
Format:	Government Document Book
Language:	English
Published:	[Washington] : United States Bureau of Mines, 1933.
Series:	Information circular (United States. Bureau of Mines) ; 6738.
Subjects:	Coal mines and mining > Safety measures. Blasting > Safety measures.

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Call Number:	I 28.27:6726-6747,6749-6750
I 28.27:6726-6747,6749-6750	Available Place a Hold Contents The following works are all found in the book indicated by the call number above. Safety practices in tunneling operations at the Hetch Hetchy Water-supply Project, Ci... Methods and costs at the Granite Quarry and Crushed-Stone Plant of the Weston & Brook... Factors and conditions that aid in alinement of pillar extraction lines in coal minin... Economic aspects of gold and silver / by Scott Turner. Metal-mine ventilation / by D. Harrington. Mining methods and costs at the Teziutlan Copper Mine of the Mexican Corporation, S.A... Petroleum refineries : including cracking plants, in the United States, January 1, 19... Recommendations of the United States Bureau of Mines on certain questions of safety a... Accident prevention at the New Black Diamond Coal Mine, Washington / by S.H. Ash and... Evolution of methane detecting devices for coal mines / by L.C. Ilsley and A.B. Hooke... Milling methods and costs at the Golden Cycle Mill, Colorado Springs, Colo. / by L.S.... Design, equipment, and construction costs of Davis-Dunkirk concentrator, Prescott, Ar... About helium / by Andrew Stewart. Manganese : general Information / by Robert H. Ridgway. Safety practices and achievements at the Columbia Mine of the Columbia Steel Co. (sub... Mining methods and costs at the McIntyre Porcupine Mines, Ltd., Schumacher, Ontario /... Markets for residential stone / by Paul Hatmaker. Blasting practices as they affect the roof of coal mines in Ohio, Pennsylvania, and W... Milling methods and costs at the concentrator of the Premier Gold Mining Co., Ltd., P... Mining laws of the Irish Free State / by E.P. Youngman. Petroleum and natural-gas studies of the United States Bureau of Mines / by H.C. Fowl... Cost of equipping and developing a small gold mine in the Bradshaw Mountains quadrang... Use of electric power in Castle Gate No. 2 mine, Utah Fuel Co. / by D.J. Parker.