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rock bit

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rock bit [′räk ‚bit]
(engineering)
Any one of many different types of roller bits used on rotary-type drills for drilling large-size holes in soft to medium-hard rocks.
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2] Sin [beta])] Minimum Q needed to effectively clean the bottom hole area beneath the rock bit Power Law Constant j 0.
Drilling rate at the technical limit by Akgun, Ferda / International Journal of Petroleum Science and Technology
Paul Burrell left the jungle in second place last night eager to tell all on his fellow celebrities - but only in the Mirror -Princess Diana's rock bit his lip in the camp but can't wait to let rip on his tormentor Janet -He also tells how he and comedian Joe Pasquale struck up a special friendship from the start -And he recounts of his hilarious Hell Hole trial when he reached into nests of rats and snakes -To find out what the butler saw in THE must-read I'm a Celebrity.
I'M A CELEBRITY: THE ROCK REVEALED by The Mirror (London, England)
Sudbury (Award of Merit 1994) * Carl Crewson, Sportspal Products/Plastitech Products, North Bay (1993) * Jim McCauley, McBay Restaurants, Thunder Bay (Award of Merit 1993) * Vic Prokopchuk, Superior Rock Bit Canada/White Otter Inn, Atikokan (1992) * Beth Queau, Twizzle Designs, Dryden (Award of Merit 1992) * Bob Firth, Bar-B-Que Bob's/Turtle Beach Wear, Kenora (1991) * Baxter Ricard, Northern Cable Holdings Ltd.
Awards honour roll by Northern Ontario Business
 
 
 
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