Fire assaying is the quantitative determination in which a metal or metals are separated from impurities by fusion processes and weighed in order to determine the amount present in the original sample.
Metals recovered in fire assaying are the metals that emerge from the fusion of the material in an assay furnace, for gold, usually at temperatures of about 2,000 Degrees F.
Despite rumors of riches, widespread American interest in the mineral wealth of what was then the Kansas Territory did not begin until Colorado’s first notable gold discovery, in the summer of 1858. Returning east from the California rush of 1849, William Greeneberry Russell took the rumors of gold in the territory seriously, and spent the summer of 1858 prospecting the eastern flank of the Rockies. By July he had more than 20 troy ounces in his possession, and the frenzy was on. Word spread…Continue
Join WMMI as we open our newest exhibit –The Mining Art of Buck O’Donnell – with a lecture by Lee Whiteley. JC (Buck) O’Donnell created a series of pen and ink drawings for various mining related supply and informational magazines during the early to mid-20th century. His work appeared in magazines like Shaft and Development Machines and Machinery Center, Inc. O’Donnell’s works served to provide visual evidence of how miners lived, how they worked, and what the…Continue