2nd Texan field test (after 04-005 Sierra Blanca). A 150km long refraction line using Tyrone, New Mexico copper mine as a source. Line extended to Antelope Wells, New Mexico on international border. Experiment done in Feb. 1999 (with no PASSCAL experiment number). Paper published on the the interpretation of these data in the New Mexico Geological Society Guidebook in 2001.
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