Ted Perkins//July 15, 2013//

ENGINEERING
GN Northern recently added Joseph McKinney as a senior geophysicist/geologist. He has more than 28 years of experience in geophysical/geological engineering, geotechnical engineering and mineral exploration. His geophysical capabilities include seismic refraction/refraction microtremor, DC resistivity, ground-penetrating radar, electromagnetics, ground magnetics, non-destructive testing of concrete and pile integrity testing.
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