Operated by the American Smelting and Refining Co. (ASARCO), this facility is designed to elucidate the importance of mining to everyday life. Exhibits include a walk-through model of an ore crusher, video stations that explain refining processes, and a film on extraction of minerals from the earth. The big draw, though, is the yawning open pit of the Mission Mine, some 2 mi long and 1¾ mi wide because so much earth has to be torn up to extract the 1% that is copper. It's impressive, but doesn't bolster the case the center tries to make about how environmentally conscious mining has become. Tours of the pit, which take about one hour, leave the center on the half hour; the last one starts at 3:30.
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