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       CODE: 850.662-010 Buy the DOT:Download/CD-ROM
TITLE(s): HORIZONTAL-EARTH-BORING-MACHINE OPERATOR (construction) alternate titles: boring-machine
operator; tunneling-machine operator
Sets up and operates boring machine to drill horizontal holes through earth banks for installation
of pipelines under highways, railroads, canals, and other obstructions: Assembles and positions
machine, augers, and casing pipes. Signals operator of crane to lower boring equipment into
previously dug starter hole. Verifies depth and level of boring position, using surveyor's level and
spirit level. Starts engine and moves levers to rotate and feed auger into earth, and simultaneously
activates hydraulic ram that forces casing into hole. Retracts auger and forces earth cuttings back
through casing to permit coupling additional sections of casing and auger. May operate machine which
flushes and pumps earth cuttings from hole. May operate boring machine that drives pilot hole
through earth bank and pulls auger bit back through bank to cut hole of required diameter.
GOE: 05.11.01 STRENGTH: M GED: R3 M2 L2 SVP: 5 DLU: 77
ONET CROSSWALK: 87902A Construction Drillers
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