churn drill bit

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• churn drill — noun : a piece of drilling equipment in which the drill is raised by a rope or cable and allowed to drop, pulverizing the rock with successive blows * * * a portable drill rig using a bit fashioned on a massive steel cylinder that is alternately… …   Useful english dictionary

• churn drill — a portable drill rig using a bit fashioned on a massive steel cylinder that is alternately lifted and dropped to drill a hole in earth and rock. * * * …   Universalium

• долото для ударно-канатного бурения — — [http://slovarionline.ru/anglo russkiy slovar neftegazovoy promyishlennosti/] Тематики нефтегазовая промышленность EN cable tool bitchisel bit toolchurn drill bit …   Справочник технического переводчика

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• List of Kururu's inventions — Many of the storylines in both the manga and the anime versions of Sgt. Frog happen thanks to Sgt. Major Kururu s knack for inventing. His twisted nature combined with Keroro s need to conquer Pokopen/Pekopon work fluidly together, as it gives… …   Wikipedia