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or a bullion assay where the precious metal is wrapped in lead foil
Equilibrium in Fire Assaying
This is the Complete Keene Engineering 191 Washer
This must have book was published in 1946 by the California Division of mines
extremely efficient machine
High Density Graphite Cube Mold 3oz Gold Bar Silver 6-Cavities Copper graphite or a bullion assay whereEach Cavities size is Inside size of the mold is apx 11 16" X 11 16" X 11 16" deep. Machined graphite ingot with the slight wall taper for better metal removal. This Mold is great for making several bars at the same time. 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 3 Troy ounce Gold Bar in each of all 6 cavities. Silver is not as heavy as Gold and pours about 1.
