Grog (clay) Grog, also known as firesand and chamotte, is a ceramic raw material. It has high percentage of silica and alumina. It can be produced by firing selected fire clays to high temperature before grinding and screening to specific particle sizes. It can also be produced from pitchers.
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The lives of Olympic athletes and Kanye West arenât very similar, but one common ground is the Adidas UltraBoost, which doubles as the best running shoe and as fashionable footwear for a night out. Adidasâ Boost technology has helped the German-based sportswear company close the gap on its competitors on fielding a lightweight and fast shoe.