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
Development of a successful multiple percussion drill carriage
Refine your search results
Published Year
1950-1959 (1)
Subject
Drilling and boring machinery (1) *
Oil-shales (1)
Author
Ballinger, Homer J. (1) *
