Job Description and Jobs
- 1) Drills and blasts earth and rock excavations to construct underground shafts and tunnels for projects, such as roads, railways, and waterways: Sets up pneumatic drilling machinery and moves lever controlling drilling action to drill blastholes in tunnel heading according to spacing, angle, and depth of hole specified by SUPERVISOR, TUNNEL HEADING.
- 2) Loads blastholes and fires powder charges to loosen earth and rock.
- 3) Wedges, nails, or bolts timber or steel retaining structures to prevent cave-ins.
- 5) When concerned with erection of breast boards to shore tunnel heading, may be designated Breast Worker.
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Job Number: 6523