Test Borer: Operates and sets up drilling equipment to obtain solid core samples of strata for analyzing geological characteristics of ground, nature of ore, or strength of foundation material. Drives or guides truck-mounted drilling equipment onto metal or wood foundation, or assembles equipment in position.
Connects power lines to equipment. Attaches diamond churn, alloy, or percussion bit to drill rod, and fastens rod in machine, using wrench or other hand tools. Starts power unit. Moves clutch and throttle to control rotation and feed of drill bit into ground. Couples additional lengths of drill rod as bit advances. Withdraws drill rod from hole after specified depth has been reached and extracts core from hollow barrel located behind drilling bit. Records depths from which core samples are taken. Lubricates machine, using grease gun, and replaces parts, such as worn winch cables. May replace diamonds in bit as they become worn, chipped, or lost, where diamond drill is used. May operate water pump to pump water down borehole to cool drill bit. (Source: eDOT Job Description) [-] Less
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