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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If you are looking for a Nike walking shoe which you can use for your everyday activity then, the Nike Stefan Janoski Skateboarding Shoe will be perfect for your busy feet. 1  They are very stylish and go with any outfit, and at the same time, the many features make it one of the most comfortable shoes for walking.