skip to content
Search
Search U.S. government technical reports digitized or harvested by
TRAIL
.
Keyword Search
Enter your search term(s):
[advanced search]
2 results returned
Browse TRAIL Inventories
(opens in new tab)
Search results
Anthracite mechanical-mining investigations:progress report 7: longhole retreat mining of a steeply pitching anthracite bed
Anthracite mechanical mining investigations
Refine your search results
Published Year
1950-1959 (2)
Subject
Anthracite coal industry (2) *
Author
Allan, Andrew. (2) *
Cooner, John D. (1)
Davis, Russell S. (1)
Kaar, Paul H. (1)
