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The Butterfield tunnel scheme
A remarkable tunnel reaching a depth below the surface of 2200 ft. and having a length of 8200 ft. It will tap and drain the two mines owned by the company. (1600 w.)
The Butterfield tunnel scheme
A remarkable tunnel reaching a depth below the surface of 2200 ft. and having a length of 8200 ft. It will tap and drain the two mines owned by the company. (1600 w.)
The Butterfield tunnel scheme
Min Sci Pr
1896
Article (Journal)
English
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