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Longwall gob degasification with surface ventilation boreholes above the Lower Kittanning coalbed

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Bibliographic Details
Main Author: Moore, T. D.
Corporate Author: United States. Bureau of Mines
Other Authors: Deul, Maurice, Kissell, Fred N.
Format: Book
Language:English
Published: Washington : Bureau of mines, 1976.
Series:Report of investigations (United States. Bureau of Mines) ; 8195.
Physical Description:
13 pages : illustrations, diagrams ; 26 cm.
Subjects:

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