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TITLE(s): PROSPECTING DRILLER (petrol. & gas) alternate titles: core driller; driller; rotary driller, prospecting; shot-hole driller Operates portable rotary drilling rig to drill shallow boreholes to obtain samples of earth formations, for placement of explosives in seismic prospecting, or for other tests to discover petroleum: Positions truck-mounted derrick at drilling area specified on field map. Starts rig and moves throttles and clutches to raise and lower drilling pipes. Counts sections of drill rod to determine depth of borehole. Selects coring bit and barrel. Withdraws core barrel from hole and extracts core from barrel. Records depths at which samples were taken. Repairs equipment, using handtools. GOE: 05.11.03 STRENGTH: M GED: R3 M3 L2 SVP: 6 DLU: 77 ONET CROSSWALK: 87911 Rotary Drill Operators, Oil and Gas Extraction | |||||||||||||||||||||||||||||||||||
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