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 rocks of lead and zinc hosted regions to extract bulk samples of the ore. Churn drills are also called percussion drills, as they function by lifting and dropping a heavy chisel-like bit which breaks the rock as it falls. Churn drills are most effective in soft- to medium-density rock of relative shallow depth (10–50 metres).
The churndrill is a large drilling machine that bores large diameter holes in the ground. In mining, they were used to drill into the soft carbonate...
Look up churn or churning in Wiktionary, the free dictionary. Churn may refer to: Butter churn, device for churning butter Churning (butter), the process...
rock. The churndrill appears in Europe during the 12th century. In 1835 Isaac Singer is reported to have built a steam powered churndrill based on the...
1851, James Fowle received a patent for a rock drill powered by steam or compressed air. Churndrill Sullivan Machinery Company (1903). The Excavation...
1928–1930 when several short shafts were sunk and a churndrill was brought to the area to drill into the rich ores. That work was halted by the Great...
porphyry copper deposit at Bingham Canyon, Utah. Krumb further refined his churndrill sampling technique at William Boyce Thompson's Inspiration (Miami, Arizona)...
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...
main pit, was discovered in 1952 when Anaconda conducted an extensive churndrilling programme to explore for oxidised ore to the north of the Chuquicamata...
during the ancient Chinese Han dynasty, when percussion drilling ("churndrilling") was used to extract natural gas in Sichuan province. Iron bits were...
equipment that was used. When the mine started, drilling was done using the same Keystone churndrills that were used in the diversion project, the 1 1/2...
invented by Swiss engineer Wilhelm Maurer in the early 1980s by adapting a drill press to function as an ice cream maker. The Pacojet was introduced in Europe...
Retrieved November 3, 2020. Lenix, Matthew (November 18, 2020). "Roster Churn: Cowboys move Diggs to IR, shuffle PS, prep for Knight". USA Today. Retrieved...
recogida de mazorcas in Spanish and course des épis de maïs in French. The churn carrying competition usually involves milk-cans and is very similar to the...
Colter Walls cited the album's musical style as an early example of the drill 'n' bass subgenre, described by the online music database AllMusic as a...
2019. Orphanides, K. G. (March 23, 2018). "Children's YouTube is still churning out blood, suicide and cannibalism". Wired UK. ISSN 1357-0978. Retrieved...
use as protective coatings for industrial machinery, including petroleum drill pipes and power plant boiler tubes.[citation needed] It also replaces titanium...
Exposition; a 1979 R22 Robinson prop helicopter; and a 1920s glass butter churn. 491 12 "The Pawnshine State" June 5, 2017 (2017-06-05) Rick and Chumlee...
22, 2019. Retrieved September 22, 2019. "Review: Swedish rockers Ghost churn up devilish display at Rogers Place". Edmonton Journal. September 24, 2019...
Imbrium impact is covered with debris from younger impacts and material churned up by possible moonquakes. Debris found in the formation may have originated...
Associated Press. September 12, 2008. Retrieved September 11, 2008. "Oil prices churn as Hurricane Ike approaches". CNN Money. Archived from the original on September...
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