MS of the geological assistant taking a sample to find out depth-logging. CU of compressor van feeding rig with air through a pipe to blow out cuttings from inside the ground. LS of drilling machine in operation.CS of operator's hand and pipes. PAN and MS of machines to MS of machine in operation. CSs of coupling of pipes, of water coming out. CS of stop watch to show flow of water per minute followed by shots of boys drinking water.