Translations:Dictionary:Betsy/1/en
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An impulsive seismic source that involves firing a shotgun shell into the earth. A Betsy downhole seisgun is an impulsive explosive source powered by shotgun shells. The shells are loaded into a small chamber on the end of a long metal pipe that is inserted into the bottom of a shallow (<3 ft) borehole. Betsy Seisgun is a Mapco trademark.