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A solid-state amplifier for the bridge circuit of a mercury detector
High-resolution seismic reflection techniques for mapping coal seams from the surface
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Published Year
1970-1979 (2)
Subject
Prospecting--Geophysical methods (2) *
Coal mines and mining--Safety measures (1)
Geochemical prospecting (1)
Mercury--Measurement--Equipment and supplies (1)
Mercury--Toxicology (1)
Seismic prospecting (1)
Author
Lepper, C. Melvin. (2) *
Ruskey, Frank, (1)