The churn drill is a large drilling machine that bores large diameter holes in the ground. In mining, they were used to drill into the soft carbonate...
3 KB (356 words) - 18:25, 11 September 2024
Look up churn or churning in Wiktionary, the free dictionary. Churn may refer to: Butter churn, device for churning butter Churning (butter), the process...
1 KB (231 words) - 13:49, 11 July 2024
rock. The churn drill appears in Europe during the 12th century. In 1835 Isaac Singer is reported to have built a steam powered churn drill based on the...
36 KB (4,834 words) - 07:44, 28 September 2024
1851, James Fowle received a patent for a rock drill powered by steam or compressed air. Churn drill Sullivan Machinery Company (1903). The Excavation...
10 KB (1,128 words) - 21:08, 5 March 2024
1928–1930 when several short shafts were sunk and a churn drill was brought to the area to drill into the rich ores. That work was halted by the Great...
10 KB (1,128 words) - 20:55, 8 April 2024
porphyry copper deposit at Bingham Canyon, Utah. Krumb further refined his churn drill sampling technique at William Boyce Thompson's Inspiration (Miami, Arizona)...
6 KB (565 words) - 12:54, 7 February 2024
main pit, was discovered in 1952 when Anaconda conducted an extensive churn drilling programme to explore for oxidised ore to the north of the Chuquicamata...
35 KB (4,450 words) - 11:51, 14 May 2024
during the ancient Chinese Han dynasty, when percussion drilling ("churn drilling") was used to extract natural gas in Sichuan province. Iron bits were...
274 KB (35,284 words) - 19:08, 20 October 2024
butter churning can be started. For this purpose a wooden churning-stick is used, which is rotated by moving a cord back and forth. By the drill movement...
7 KB (857 words) - 07:11, 27 May 2024
equipment that was used. When the mine started, drilling was done using the same Keystone churn drills that were used in the diversion project, the 1 1/2...
31 KB (3,981 words) - 06:34, 26 September 2024