Geoprobe® Designed Rod Handling System • Patented Geoprobe® GV4 Sonic Head • Adjustable Swing-arm Control Panel • 10-ft. Tooling Compatible • 12-in. Double Wrench Breakout • Front and Rear Outriggers (Four Point Stabilization) • Centerline Side-Shift Function • 5-in. Tooling Compatible • Rock Coring Compatible • Auto Drop Hammer Compatible (SPT) • Rear Blade Stabilizer and Tooling Transport
IDEA Drilling, in Virginia, MN, used an 8140LS Sonic, working from a barge on the water’s surface, to collect core samples of the rubble.The pit is 250 ft. deep in some places. Tests show the bottom of the Rouchleau Pit, which was back-filled with mine waste, contains rocks that vary in size from small pebbles to the size of Volkswagens. The rubble ranges from 40 to 140 ft. thick. Because the bottom of the pit is neither uniform nor stable, the tests were needed to help determine if the rubble is stable enough to hold the massive bridge foundations needed to support the four-lane expressway.
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