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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Nike is one of the top brands in the world for women's running shoes. The company offers several styles and types of running shoes, including customizable footwear. In addition to making women's shoes with the proper arch support and traction needed for training and running, the shoes serve other purposes.