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A platform for research: civil engineering, architecture and urbanism
Cement grout and compressed air in shaft sinking
R. C. Johnson, in Coal Age. Description of methods and operations. (2500 w.) (No. 31921)
Cement grout and compressed air in shaft sinking
R. C. Johnson, in Coal Age. Description of methods and operations. (2500 w.) (No. 31921)
Cement grout and compressed air in shaft sinking
Compressed Air
1912
Ills.
Article (Journal)
English
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Shaft sinking with chemical grout
Engineering Index Backfile | 1961
| Engineering Index Backfile | 1902
| Engineering Index Backfile | 1948
| Tema Archive | 2013