compressed air drillの例文

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1. He also built new smelters using innovative methods developed by his brothers, including steam engines and diamond and compressed air drills.
2. Longyear purchased the rights to make and sell Chicago Pneumatic's small CP-65 compressed air drill designed for underground use.
3. Power for the work's 12 compressed air drills was supplied by a hydro-electric plant situated about six miles from the scene of operations.
4. Kellow introduced compressed air drills, which were fed by a small water-powered compressor located near the foot of the incline to the nearby Rhosydd Quarry.
5. They did have for tunneling truck-mounted water-cooled compressed air drills called " Jumbos . " After the initial holes were drilled into the substrata, dynamite was used for blasting away the rock.