Caterpillar 797B and Komatsu 690E at Minera Escondida, Antofagasta,
Minera Escondida Copper Mine
Minera Escondida, which means 'hidden' in Spanish, is a mining company that operates two open pit copper mines in the Atacama Desert, 170 km southeast of Antofagasta in northern Chile. It is currently the highest producing copper mine in the world. 2007 production of 1.483 million tons of the metal was worth US$ 10.12 billion, mainly as metal in concentrate but some as cathode, and was 9.5% of world output and 26% of Chilean production, according to the US Geological Survey's preliminary estimates of 2007 world mine output.
Escondida produces mainly copper concentrates, which are piped as a slurry down to the port of Coloso where they are dewatered before shipping, and a smaller proportion of cathode copper from the leaching of both oxide and low grade sulfide ore. It also produces gold and silver.
The mine is owned 57.5% by BHP Billiton, 30% by Rio Tinto, 10% by JECO, a Japanese consortium headed by Mitsubishi and 2.5% by the International Finance Corp (IFC), a World Bank subsidiary.
Caterpillar Inc. is a United
States-based corporation headquartered
in Peoria, Illinois. Caterpillar is,
according to their corporate website,
"the world's largest manufacturer of
construction and mining equipment,
diesel and natural gas engines, and
industrial gas turbines." Caterpillar
produces a wide range of heavy
equipment, including the range of
Caterpillar bulldozers. Caterpillar's
line of vehicles range from tracked
tractors to hydraulic excavators,
backhoe loaders, motor graders,
off-highway trucks, wheel loaders, and
agricultural tractors. They are used in
construction, road-building, mining,
forestry, energy, transportation and
Caterpillar is one of the thirty
companies whose stock is tracked in the
Dow Jones Industrial Average. It is a
Fortune 500 company, ranked number 50 in
2008, and first in its industry, with
more than $30 billion in assets. Source:
The Caterpillar 797B is an off-highway, ultra class, two-axle, mechanical powertrain haul truck developed and manufactured by Caterpillar Inc. in the United States specifically for high production mining and heavy-duty construction applications world-wide. The 797B is the second generation of the 797 series. The 797B was introduced to the public in spring of 2002 and first entered service with a customer in October, 2002.
The 797B remained in production until
December, 2009 when Caterpillar started
full production of the 797B's successor,
the 797F. While it was in production, the 797B was Caterpillar's largest, highest payload capacity haul truck model.
The Komatsu 960E-1 (960E) is an off-highway, ultra-class, rigid-frame, two-axle, diesel/AC electric powertrain haul truck designed and manufactured by Komatsu America Corp. in Peoria, Illinois, United States.
The 960E-1 is Komatsu's largest, highest
capacity haul truck, offering a payload
capacity of up to 360 short tons (327
t). The 960-E1 is the first generation of the 960E series of haul trucks and is alternately referred to by Komatsu specifically as the 960E-1 or generally as the 960E.