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Tanzania Clay-Typing and Lithologic Study

Tanzania Clay-Typing and Lithologic Study

Colog conducted natural and spectral gamma logging, EM induction conductivity and magnetic susceptibility logging using portable equipment at four corehole sites in the Ngorongoro Crater in Tanzania.  Our lithologic analysis of the downhole geophysical data were...
Dewatering Study  Near Leadville, CO

Dewatering Study Near Leadville, CO

A project involving hydrophysical logging (HpL) under ambient and pumping conditions was used to evaluate the vertical distribution of hydraulic conductivity in a mine borehole. The corehole was in a strategic location on site: drilled into a fault intersecting two...
Sonar Applications in Submerged Mine Workings

Sonar Applications in Submerged Mine Workings

COLOG has adapted a multi-frequency profiling sonar probe that can be logged from any 4-conductor standard geophysical logging rig, for imaging submerged mine workings, large diameter shafts, raised bores, karst environments and large diameter boreholes. Much of the...