Hughes Christensen, a division of the Baker Hughes in Belfast, offered to sell Dong Ah, 20 rock bits, at $ 20, 000 each, according to a fax provided to The New York Times.
12.
In its initial tests at Harris County, southeast of Houston on Galveston Bay, the Sharp-Hughes Rock Bit penetrated of hard rock in 11 hours which no previous equipment had been able to penetrate at all.
13.
After collecting data from thousands of bit runs, Hughes introduced the first comprehensive guides to efficient drilling practices in 1960; 1964 saw the introduction of the X-Line rock bits, combining new cutting structure designs and hydraulic jets.
14.
Denying most favored nation status to a country such as China would be a great insult, said Phil Tevis, vice president of operations for Dallas-based Dresser Industries, which sells pumps, compression equipment, rock bits and other equipment to the Chinese.
15.
One example I know of is oil drilling-as the drill progresses the little bits of broken rock need to be carried away in a stream of water-certain additives are added to the water to help keep the rock bits in suspension.
