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2. Concrete densifier - Wikipedia

   en.wikipedia.org/wiki/Concrete_densifier

   A concrete densifier is a chemical applied to a concrete surface in order to fill pores, increasing surface density [clarification needed].Chemical densifiers are used on polished and non-polished concrete to reduce dusting and wear; on polished concrete surfaces densifiers help concrete take a better polish and make the surface less permeable to liquids so the slab does not require sealing.

3. Core drill - Wikipedia

   en.wikipedia.org/wiki/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 abrasive material and may ...

4. Diamond grinding of pavement - Wikipedia

   en.wikipedia.org/wiki/Diamond_grinding_of_pavement

   Diamond grinding is a pavement preservation technique that corrects a variety of surface imperfections on both concrete and asphalt concrete pavements. Most often utilized on concrete pavement, diamond grinding is typically performed in conjunction with other concrete pavement preservation (CPP) techniques such as road slab stabilization, full- and partial-depth repair, dowel bar retrofit ...

5. 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 ...

6. Are lab-grown diamonds 'worthless'? Experts weigh in as ... - AOL

   www.aol.com/news/lab-grown-diamonds-worthless...

   Some high-end fine jewelers have gotten on board with the trend. In 2023, jeweler Jean Dousset, the great-great-grandson of Louis Cartier, opened a showroom with “designer” lab-grown diamonds ...

7. Kokua Line: Why is there a fence on Diamond Head? - AOL

   www.aol.com/kokua-line-why-fence-diamond...

   Question : There is a big fence put up on the Ewa slopes of Diamond Head, makai of the new culinary school. What is this fence for, and what is the area that is cordoned off ? Answer : You are one ...