April 08, 2022

The Assay Process

How did the individual prospector roaming the hillsides with his burro, pan, and pick know if he had found economically valuable ore?  How did a mining company know if the ore produced could earn a profit for the company? They both depended on chemical assays. Every prospector knew how to do a “field assay” to determine the worth of his ore.  Mining companies employed an assayer working in a well-equipped assay office to complete the task.

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