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Diamond cutting is the practice of shaping a diamond from a rough stone into a faceted gem. Cutting diamonds requires specialized knowledge, tools, equipment, and techniques because of its extreme difficulty. The first guild of diamond cutters and polishers (Diamantaire) was formed in 1375 in Nuremberg, Germany, [1] and led to the development ...
The Arizona Diamondbacks farm system consists of eight Minor League Baseball affiliates across the United States and in the Dominican Republic.Six teams are independently owned, while four—two Arizona Complex League D-backs teams and two Dominican Summer League Arizona teams—are owned by the major league club.
t. e. Environmental effects of mining can occur at local, regional, and global scales through direct and indirect mining practices. Mining can cause erosion, sinkholes, loss of biodiversity, or the contamination of soil, groundwater, and surface water by chemicals emitted from mining processes. These processes also affect the atmosphere through ...
The Ekati Diamond Mine, often simply called Ekati, is Canada's first surface and underground diamond mine [1] and is owned by Burgundy Diamond Mines. It is located 310 km (190 mi) north-east of Yellowknife, [2] Northwest Territories, and about 200 km (120 mi) south of the Arctic Circle, near Lac de Gras. Until 2014, Ekati was a joint venture ...
The "diamonds" are actually a complex flow field made visible by abrupt changes in local density and pressure as the exhaust passes through a series of standing shock waves and expansion fans. The physicist Ernst Mach was the first to describe a strong shock normal to the direction of fluid flow, the presence of which causes the diamond pattern.
The drop in the value of diamonds on the world market meant that the value of diamond exports decreased by 20.68 percent in 2009 compared to 2008. [16] The largest diamond found in Sierra Leone, and the third largest diamond in the world, was a 969.8-carat (194 g) rough diamond. It was found in 1972 and named the An-al of Sierra Leone. [5] [18]
Onboard morgues allow a ship’s crew to store bodies in the event of a death during a cruise, according to Winkleman. The facilities are refrigerated, stainless steel rooms accommodating between ...
Diamond tool. A close-up of a segment of a diamond saw blade. A diamond tool is a cutting tool with diamond grains fixed on the functional parts of the tool via a bonding material or another method. As diamond is a superhard material, diamond tools have many advantages as compared with tools made with common abrasives such as corundum and ...