skip to content
Search
Search U.S. government technical reports digitized or harvested by
TRAIL
.
Keyword Search
Enter your search term(s):
[advanced search]
1 result returned
Browse TRAIL Inventories
(opens in new tab)
Search results
Shaft- and slope-bottom lay-outs at coal mines
Refine your search results
Published Year
1930-1939 (1)
Subject
Coal mines and mining (1) *
Author
Anderson, Robert L. (1) *
