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2. Core drill - Wikipedia

   en.wikipedia.org/wiki/Core_drill

   Truck-mounted core drill. A modern core drill is a drill specifically designed to remove a cylinder of material, much like a hole saw. The material left inside the drill bit is referred to as the core. Core drills used in metal are called annular cutters. Core drills used for concrete and hard rock generally use industrial diamond grit as the ...

3. Pile integrity test - Wikipedia

   en.wikipedia.org/wiki/Pile_integrity_test

   Core drilling, on the other hand, can be carried out to a large depth provides full information, but only for a very small fraction of the pile volume. Indirect methods, or imaging, were first developed in the early 1970s.

4. Annular cutter - Wikipedia

   en.wikipedia.org/wiki/Annular_cutter

   An annular cutter (also called a core drill, core cutter, broach cutter, trepanning drill, hole saw, or cup-type cutter) is a form of core drill used to create holes in metal. An annular cutter, named after the annulus shape , cuts only a groove at the periphery of the hole and leaves a solid core or slug at the center.

5. Core sample - Wikipedia

   en.wikipedia.org/wiki/Core_sample

   Rock core samples, the product of a diamond rig. A pied butcherbird perches nearby. A core sample is a cylindrical section of (usually) a naturally-occurring substance. Most core samples are obtained by drilling with special drills into the substance, such as sediment or rock, with a hollow steel tube, called a core drill. The hole made for the ...

6. Underwater survey - Wikipedia

   en.wikipedia.org/wiki/Underwater_survey

   Coring devices include core drills and impact penetrators. [20] ... Waterproof paper is available for use on clipboards, and can be printed with checklists.

7. Pile driver - Wikipedia

   en.wikipedia.org/wiki/Pile_driver

   A piling rig is a large track-mounted drill used in foundation projects which require drilling into sandy soil, clay, silty clay, and similar environments. Such rigs are similar in function to oil drilling rigs, and can be equipped with a short screw (for dry soil), rotary bucket (for wet soil) or core drill (for rock), along with other options.