Search results
Results from the WOW.Com Content Network
Montezuma Well (Yavapai: ʼHakthkyayva), a detached unit of Montezuma Castle National Monument, [1] is a natural limestone sinkhole near the town of Lake Montezuma, Arizona, through which some 1,500,000 US gallons (5,700,000 L; 1,200,000 imp gal) of water emerge each day from an underground spring. It is located about 11 miles (18 km) northeast ...
The mine produces copper and molybdenum concentrate as well as SX/EW copper cathode from a ROM oxide-leaching system. [1] Sierrita was acquired by Duval Corporation in 1959; Pennzoil acquired a controlling interest in Duval in 1968. [2] Sierrita was operated by Cyprus Mines (later Cyprus Amax Minerals) from 1986 to 1999.
Five of the more important core assay results follow: Hole #DW11-1D - 20.2 ounces silver per ton at a depth of 197-198 feet. Hole #DW11-1D - 21.8 ounces silver per ton at a depth of 198-200.5 feet.
Voters in southeastern Arizona could create the first new water active management area in 40 years, imposing new rules to protect dwindling wells. As wells dry up and lawmakers balk, Cochise ...
For premium support please call: 800-290-4726 more ways to reach us
In Arizona, copper mining 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 ...
Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole.The log may be based either on visual inspection of samples brought to the surface (geological logs) or on physical measurements made by instruments lowered into the hole (geophysical logs).
During such drilling, data is acquired from the drilling rig sensors for a range of purposes such as: decision-support to monitor and manage the smooth operation of drilling; to make detailed records (or well log) of the geologic formations penetrated by a borehole; to generate operations statistics and performance benchmarks such that ...