Job Description and Jobs
- 1) Places hydraulic jacks, timbers, and posts in specified locations to form roof support system in underground mine: Examines hydraulic lines and tightens connections, using wrenches.
- 2) Helps place temporary posts or timbers under roof support beams when hydraulic jack failure occurs, or to supplement jacks in supporting roof.
- 3) Advances coal conveyors and jack units forward to facilitate making new series of cuts in coal strata, using built-in or portable horizontal jacks.
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Job Number: 5444