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When overhead power lines are close by, the drill rig mast should not be raised unless the distance between the rig and the nearest power line is in accordance with Corp requirements or the power has been shut off and positive means have been taken to prevent the lines from being energized. The drill rig operator or assistant should walk completely around the rig to make sure that proper distance exists. Power lines Minimum nominal system kv required distance 0-50 10 feet 51-100 12 feet 101-200 15 feet 201-300 20 feet 301-500 25 feet 501-750 35 feet 751-1000 45 feet When the drill rig is positioned near an overhead line, the rig operator should be aware that hoist lines and power lines can be moved towards each other by wind. 509.6 Clearing the Work Area Before a drill rig is positioned to drill, the area on which the rig is to be positioned should be cleared of removable obstacles and leveled if sloped. The cleared/leveled area should be large enough to accommodate the rig and supplies. Clearance shall be in accordance with Chapter 18 of EM 385-1-1. 509.7 Safe Use of Augers Never place hands or fingers under the bottom of an auger flight when hoisting the flight over the top of another flight in the ground or other hard surfaces, such as the drill rig platform. Never allow feet to get under the auger flight while the flight is being hoisted. r.. When an auger is rotating, stay clear of the auger and other rotating components of the drill rig. Never reach behind or around a rotating auger for any reason.