enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Exploration diamond drilling - Wikipedia

   en.wikipedia.org/wiki/Exploration_diamond_drilling

   Diamond core drill bits. Rodolphe Leschot is often cited as being the inventor of the first core bit in 1863. [1] Early diamond drilling opened up many new areas for mineral mining, and was related to a boom in mineral exploration in remote locations. Before the invention of the portable diamond drill, most mineral prospecting was limited to ...

3. Hole saw - Wikipedia

   en.wikipedia.org/wiki/Hole_saw

   Tungsten carbide hole saw with arbor A 52 mm (2.0 in) hole saw with pilot bit A 115 mm (4.5 in) diamond hole saw. A hole saw (also styled holesaw), also known as a hole cutter, [1] is a saw blade of annular (ring) shape, whose annular kerf creates a hole in the workpiece without having to cut up the core material.

4. 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 ...

5. 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 ...

6. Sports News & latest headlines from every league - AOL.com

   www.aol.com/sports

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

7. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   A diamond core drill bit is intended to cut an annular hole in the workpiece. Large bits of similar shape are used for geological work, where a deep hole is drilled in sediment or ice and the drill bit, which now contains an intact core of the material drilled with a diameter of several centimeters, is retrieved to allow study of the strata.