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core drill

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core drill

[′kȯr ‚dril]
(mechanical engineering)
A mechanism designed to rotate and to cause an annular-shaped rock-cutting bit to penetrate rock formations, produce cylindrical cores of the formations penetrated, and lift such cores to the surface, where they may be collected and examined.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

core drill

A drill used to remove a sample of rock in situ, for determining bedrock profiles or for obtaining a core for testing; the sample is retained in the core barrel.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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References in periodicals archive
"When you core drill, the only pavement you're disturbing is what you drill with either a 9- or 12-inch diameter core saw.
Another Sweden-based company, Sandvik, is not only a high-tech transnational company, but one of the three leading core drill producers in the world.
The core drill must also be capable of adjustment so that it is also perpendicular to the horizon in the plane that parallels the length of the road.
Condor Resources Plc (CNR.LN), an AIM listed exploration company focused on developing gold and silver resources, has contracted a second diamond core drill rig.
Magnetic core drills or "Magdrills" for short are an essential tool for anyone involved in the production and installation of structural steel.
6 ( ANI ): Scientists have identified regions in Antarctica that they claim stores data about Earth's climate and greenhouse gases extending as far back as 1.5 million years, almost twice as old as the oldest ice core drilled to date.
Standard and special indexable drills include Holeshot indexable drills, Stinger small diameter drills and Coremaster core drills. Holeshot drills are large drills with patented multiple phasing that require less horsepower and offer cutting stability along with superior chip control and good surface finishes.
The U6 is the first of a new generation of Diamec core drills incorporating the latest hydraulic and electronic technology into a compact design.
By comparing the isotopic ratios recorded in a sediment core drilled from the ocean floor at a site about 500 miles north of the river mouth with those found in a core taken further from the mouth, Maslin and Burns were able to calculate the volume of fresh water that the river dumped annually into the ocean.
A 600-meter core drilled from a site off Greenland's eastern coast and a 200-m core from off Antarctica reveal several episodes of particularly high sediment accumulation in the past 3 million years, says Kristen E.
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