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 studies :percussive drilling in the field
Refine your search results
Published Year
1970-1979 (1)
Subject
Boring machinery (1)
Percussion drilling (1)
Tunneling (1) *
Author
Schmidt, Robert L. (1) *
