Serial/Series Title
States
Decade
1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Experiments in Underground Communication Through Earth Strata
Technical paper issued by the Bureau of Mines over studies in mine safety and communication. The methods and equipment used in the studies are presented and discussed. This paper includes tables, illustrations, and photographs.
Date:
1928
Creator:
Ilsley, L. C.; Freeman, H. B. & Zellers, D. H.
System:
The UNT Digital Library