Geology Books Online Problem Solving
Carson, 1. screwed or flanged column pipe sections, each usually 10 ft (3 m) long. exposed to the water when the pump is built to be water-lubricated. a. Broadly, shaft winding from depths of about 3,000 ft (915 m) and deeper. (coal mining). In the case of shafts deeper than about 5,000 ft or 1.52 km.