Labels:text | screenshot | map OCR: Workshop AIZ Machines Principles of Science History Inventors Back Index Options Help zl Mim CONSTRUCTION AUGER B concrete columns called piles. To ON rest on make firm foundations, construction AUGER DRILL companies use an auger to dig a deep hole. A crane then lifts the auger back to the surface and spins it to remove the soil. The hole is then filled with concrete. SEE ALSO C
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