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New Cornelia Mine
The New Cornelia mine is a currently inactive open-pit copper mine in Pima County, Arizona, United States. It was the only productive mine in the Ajo mining district, and is located just outside the town of Ajo, which was built as a company town to serve the New Cornelia mines. The roughly circular pit is one and a half miles across at its widest point, and 1,100 feet deep at the center. Although not generally regarded as a 'dam', the New Cornelia Mine Tailings is often cited as the largest dam structure in the United States with a volume of 7.4 billion cubic feet. History, archaeological mining history Native Americans had long mined surface exposures of copper veins near the New Cornelia for pigments: red copper oxide and green copper carbonate. Spanish miners are known to have excavated test shafts in the area by 1750, but the amount of copper produced is not known. Americans claimed the location in 1854 and shipped a few loads of selected ore to Swansea, Wales, but high t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonoran Desert
The Sonoran Desert ( es, Desierto de Sonora) is a desert in North America and ecoregion that covers the northwestern Mexican states of Sonora, Baja California, and Baja California Sur, as well as part of the southwestern United States (in Arizona and California). It is the hottest desert in both Mexico and the United States. It has an area of . In phytogeography, the Sonoran Desert is within the Sonoran Floristic province of the Madrean Region of southwestern North America, part of the Holarctic realm of the northern Western Hemisphere. The desert contains a variety of unique endemic plants and animals, notably, the saguaro (''Carnegiea gigantea'') and organ pipe cactus (''Stenocereus thurberi''). The Sonoran Desert is clearly distinct from nearby deserts (e.g., the Great Basin, Mojave, and Chihuahuan deserts) because it provides subtropical warmth in winter and two seasons of rainfall (in contrast, for example, to the Mojave's dry summers and cold winters). This creates an ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Pima County, Arizona
Pima County ( ) is a county in the south central region of the U.S. state of Arizona. As of the 2020 census, the population was 1,043,433, making it Arizona's second-most populous county. The county seat is Tucson, where most of the population is centered. The county is named after the Pima Native Americans who are indigenous to this area. Pima County includes the entirety of the Tucson Metropolitan Statistical Area, and it is the third largest metropolitan area in the Southwestern United States. Pima County contains parts of the Tohono O'odham Nation, as well as all of the San Xavier Indian Reservation, the Pascua Yaqui Indian Reservation, Organ Pipe Cactus National Monument, Ironwood Forest National Monument and Saguaro National Park. The vast majority of the county population lies in and around the city of Tucson (2021 city population: 543,242), filling much of the eastern part of the county with urban development. Tucson, Arizona's second largest city, is a major comme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper Mines In Arizona
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur in nature in a directly usable metallic form ( native metals). This led to very early human use in several regions, from circa 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, circa 5000 BC; the first metal to be cast into a shape in a mold, c. 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create bronze, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ira Joralemon
Ira Beaman Joralemon (1884 – 1975) was an American mining engineer, economic geologist, and mining company executive, who specialized in exploration and mining of copper ore deposits. Over a career spanning more than six decades, Joralemon was involved in the discovery and development of numerous major copper and gold deposits, many of which went on to become operational mines. In addition to his professional career within the minerals industry, he was also a popular science author and historian of the mining industry. Biography Ira B. Joralemon graduated from Harvard University with an A.B. (''magna cum laude'') in Mining and Metallurgy in 1905, and received an A.M. degree in the same subject from the same institution in 1907. After graduation he took a job as a mining engineer with the Calumet & Arizona Mining Company, working on their copper mining properties near Bisbee, Arizona. Following the appointment of new C&A Company General Manager John C. Greenway in 1911, it was J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper Mining In Arizona
Copper mining in Arizona, a state of the United States, has been a major industry since the 19th century. In 2007, Arizona was the leading copper-producing state in the country, producing 750 thousand metric tons of copper, valued at $5.54 billion. Arizona's copper production was 60% of the total for the United States. Copper mining also produces gold and silver as byproducts. Byproduct molybdenum from copper mining makes Arizona the nation's second-largest producer of that metal. Although copper mineralization was found by the earliest Spanish explorers of Arizona, the territory was remote, and copper could seldom be profitably mined and shipped. Early Spanish, Mexican, and American prospectors searched for gold and silver (see '' Silver mining in Arizona''), and ignored copper. It was not until the completion of the Southern Pacific Railroad in 1876 that copper became broadly economic to mine and ship to market. All copper mining was done by underground methods until the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phelps Dodge
Phelps Dodge Corporation was an American mining company founded in 1834 as an import-export firm by Anson Greene Phelps and his two sons-in-law William Earle Dodge, Sr. and Daniel James. The latter two ran Phelps, James & Co., the part of the organization based in Liverpool, England. The import-export firm at first exported United States cotton from the Deep South to England and imported various metals to the US needed for industrialization. With the expansion of the Western frontier in North America, the corporation acquired mines and mining companies, including the Copper Queen Mine in Cochise County, Arizona and the Dawson, New Mexico coal mines. It operated its own mines and acquired railroads to carry its products. By the late 19th century, it was known as a mining company. On March 19, 2007, Freeport-McMoRan completed a $25.9 billion acquisition of Phelps Dodge Corporation. History in 1821, Anson G. Phelps started a partnership in New York City with Elisha Peck, a mer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gila Bend, Arizona
Gila Bend (; O'odham: Hila Wi:n), founded in 1872, is a town in Maricopa County, Arizona, United States. The town is named for an approximately 90-degree bend in the Gila River, which is near the community's current location. As of the 2020 census, the population of the town was 1,892. Just outside the town is the San Lucy district (O'odham: Weco Cekṣanĭ) of the Tohono O'odham Nation, with a small settlement, San Lucy (O'odham: Si:l Mek) bordering the town itself. History Oyadaibuc The town of Gila Bend is situated near an ancient Hohokam village. Father Eusebio Francisco Kino was the first European to visit, arriving in 1699 on his first journey of exploration to the Colorado River. The Hohokam site along the fertile banks of the Gila River had been abandoned, and other tribes lived in the vicinity. 132 Pima people lived in a ranchería called ''Oyadaibuc'', or as Kino named it ''San Felipe y Santiago del Oyadaibuc'', near the modern town, and other Pima lived in three r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tucson, Cornelia And Gila Bend Railroad
The Tucson, Cornelia and Gila Bend Railroad went from Gila Bend, Arizona to Ajo, Arizona. The railroad was incorporated in 1915 for use by the New Cornelia mine at Ajo. Originally, the railroad was intended to connect to Tucson. The railroad was in operation from 1916 until the 1980s. The station of Childs was established in 1916 six miles north of Ajo. Childs was named for local rancher and miner Tom Childs, who discovered copper at Ajo. In 1934, Childs was described as having a post office and station. In 1926, it was reported that the track was 44.327 miles long and that the railroad owned an additional 3.310 miles of tracks and sidings. In 1969, six stations were listed in the timetable, but only Ajo and Gila Bend were agency stations. Black Gap and Rocky Point were short sidings used when passenger trains met. Childs and Midway were longer sidings. In 1972, it was mentioned that there were children living in Childs. In 1998, Phelps Dodge upgraded the railroad for prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bisbee, Arizona
Bisbee is a city in and the county seat of Cochise County in southeastern Arizona, United States. It is southeast of Tucson and north of the Mexican border. According to the 2020 census, the population of the town was 4,923, down from 5,575 in the 2010 census. History Bisbee was founded as a copper, gold, and silver mining town in 1880, and named in honor of Judge DeWitt Bisbee, one of the financial backers of the adjacent Copper Queen Mine. The town was the site of the Bisbee Riot in 1919. In 1929, the county seat was moved from Tombstone to Bisbee, where it remains. Mining industry Mining in the Mule Mountains proved quite successful: in the early 20th century the population of Bisbee soared. Incorporated in 1902, by 1910 its population had swelled to 9,019, and it sported a constellation of suburbs, including Warren, Lowell, and San Jose, some of which had been founded on their own (ultimately less successful) mines. In 1917, open-pit mining was successfully introd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Gilluly
James Gilluly (June 24, 1896 – December 29, 1980) was an American geologist. Regarding the Cupriferous Porphyry Genesis, Gilluly integrated detailed observations of the Ajo porphyry between 1936 and 1936 with experimental data (Goranson, 1931, Gilluly, 1937). Gilluly concluded that after the Ajo quartz monzonite intruded and crystallized, it was fractured by magmatic bypass solutions (p. 73). Gilluly frequency experimental restrictions to estimate a paleo depth between 1000 and 3000 (m) (average 2000 (m) or 0.5 kbar at lithostatic pressure), consistent with solidus temperatures of 900 °C for granite, containing 4% by weight of water. He realized that the source magmatic content was water, sulfur and halogens, and that the binders can form complexes with metals to produce an aqueous fluid with larger volumes. On the other hand, one can also count on the fact that volatiles decrease the solubility of water in magma and the vapor pressure of expelled fluid could fracture ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
