SAHUARITA -- The Asarco Mineral Discovery Center, a tourist attraction south of Tucson, shows guests how big things get in Arizona. The center is affiliated with the Asarco Mission Mine, an open-pit operation that has been around since 1911. The hole measures more than 2.3 miles long...

MORENCI -- If you ever dug up your mom's garden with a tin scoop shovel and hauled the dirt away in a toy dump truck, you might want to look down into the Morenci Mine and appreciate what grownups can do with real tools.

LYNX CREEK — One of the first things a miner should learn is to be careful where he puts his pick. As proof, consider an item from the May 13, 1899, edition of the Prescott Journal Miner concerning J.M. Moore and how he discovered the Amulet Mine. According to the report, Moore was prospecting on ...