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Two-leg longwall shield mechanics
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Main Author: | |
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Corporate Author: | |
Other Authors: | |
Format: | Government Document Microfilm Book |
Language: | English |
Published: |
Pittsburgh, PA. :
U.S. Dept. of the Interior, Bureau of Mines,
1989.
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Series: | Report of investigations (United States. Bureau of Mines) ;
9220. |
Physical Description: |
ii, 34 pages : illustrations ; 28 cm. |
Subjects: |
Copy 1 | CMU Storage Gov Pub Microfiche | I 28.23:9220 | Available |
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