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
Noise abatement of pneumatic rock drill
Refine your search results
Published Year
1970-1979 (1)
Subject
Coal mines and mining--Noise control (1)
Pneumatic machinery (1)
Rock-drills (1) *
Author
Murphy, John N., (1) *
Summers, Charles R. (1)
