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TITLE(s): ROCK-DRILL OPERATOR II (construction) alternate titles: drifter Operates drill supported by upright column, to drill through rock in construction work, such as tunnels, highways, or dams: Fits bit in chuck of drifter (drill). Regulates valve to release compressed air that activates drill. Turns screw to feed drill into rock. Regulates flow of water to remove dust and debris from hole, or blows dust out of hole with compressed air. GOE: 05.11.01 STRENGTH: H GED: R3 M1 L1 SVP: 5 DLU: 77 ONET CROSSWALK: 87902A Construction Drillers | |||||||||||||||||||||||||||||||||||
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