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Anhydrous Borax is used for many things including Gold Recovery from Black sands
Silica & Manganese
Time and temperature
or DWT 233
PART 2Extracts from "The Tonopah
25 oz Gold - Silver Bar High Density Graphite Square Slab Mold Loaf Copper (H5) pan kits Anhydrous Borax is used forInside size of the mold is 1 15 16" X 1 15 16" X 11 16" deep. Machined graphite ingot with the slight wall taper for better metal removal. This Mold is great for making old style loaf bars. The weight of each bar depends on what metal your working with and how full you fill each cavity. Full to the top will give you a apx 25 Troy ounce Gold Bar. Silver Dime shown in the pic is not included. Silver bar will be like 12 oz maybe a bit more.
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