Asbestos mines were profitable before they were banned.
Challenges facing early Arizona lines included steep gradients.
The tracks of the "iron horse" spread into many parts of Arizona.
The Colorado Plateau is known for its abundance of radioactive minerals.
An area mine produced 800 million pounds of copper between 1882 and 1930.
Silver discoveries in the 1870s instigated mining in the Globe-Miami District.
The Silver Queen Ledge, near modern-day Superior including the Irene and Hub claims, was discovered in 1871 by prospectors in search of the nearby Silver King Mine.
Located three miles north of Superior in Pinal County, the Silver King Mine was once the richest silver mine in Arizona, producing high-grade silver along with smaller amounts of gold, copper, zinc and lead.
While prospecting along the Hassayampa River in October 1863, Henry Wickenburg and several associates discovered a gold-bearing quartz outcrop 500 feet long, 400 feet wide and 100 feet tall.
The San Francisco Mining district, whose claim to fame was $34 million in gold production between 1870 and 1933, is located in the southern part of the Black Mountains in Mohave County.
Frontier military outposts in Arizona began with several early presidios established along the Santa Cruz River.
People have mined coal in Arizona for at least 700 years, but today the only active mine in the state is the Kayenta Mine at the Black Mesa field on the Colorado Plateau in Northeastern Arizona.
The importance of haul trucks in the history of surface mining in Arizona cannot be overstated.
Jerome’s population reached 15,000 during the peak of mining operations during the 1920s.
Located 56 miles southwest of Flagstaff on the east slope of Mingus Mountain — a 1,750-million-year-old volcanic tuff — the town of Jerome and its surroundings were once known as one of the greatest copper-producing areas on the planet.
Located in the Lower San Pedro River Basin 40 miles northeast of Tucson and a mile south of the Mammoth-St. Anthony Mine, the San Manuel area enticed 1880s prospectors attracted to the copper-stained exposures of Red Hill and other nearby localities.
Depressed copper prices in the 1920s and ’30s saw the eventual closure of mining operations in the Silver Bell district. The nearby Sasco smelter had shut down by 1921 and the Sasco townsite was abandoned.
The earliest recorded mine in the Silver Bell Mountains was the Old Boot Mine in 1865. The mine, later renamed the Mammoth Mine, was developed by prospectors and financed by a group of Tucson merchants including Zeckendorf and Steinfeld, who were drawn to the heavy, black garnet-stained rock…
Arizona, known for its abundant copper deposits, also hosts a modest amount of oil and helium deposits.
Located two miles southeast of Bisbee, the Irish Mag Mine — named after a Bisbee dance-hall girl — became known in 1899 as a large high-grade copper ore body.