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Tunnelling through no ground
In driving 1525-ft single track Lough tunnel of Baltimore and Ohio R R near Clarksburg, WVa, abandoned mine workings were encountered; excavated dimensions of tunnel are 22 ft 8 in. wide and 32 ft high; pictorial description of tunnel construction.
Tunnelling through no ground
In driving 1525-ft single track Lough tunnel of Baltimore and Ohio R R near Clarksburg, WVa, abandoned mine workings were encountered; excavated dimensions of tunnel are 22 ft 8 in. wide and 32 ft high; pictorial description of tunnel construction.
Tunnelling through no ground
Construction Methods
1948
4 pages
Article (Journal)
English
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