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
Drillability determination :a drillability index for percussion drills
Refine your search results
Published Year
1970-1979 (1) *
Subject
Drilling and boring (1)
Mining machinery (1)
Author
Tandanand, Sathit. (1) *
Unger, Harold F., (1)
