Search results
Results From The WOW.Com Content Network
Prior to August 1999, ore was hauled on a 3 ft 6 in (1,067 mm) narrow gauge railroad, double-tracked and electrified at 1,400 V DC, except in the ore loading area, where 600 V DC was used. 4-wheel locomotives weighing 55–62 short tons (49–55 long tons; 50–56 metric tons) hauled trains of 4-wheel 20-short-ton (17.9-long-ton; 18.1-metric ...
The mine was proposed to consist of five open pits, with an anticipated 23.1 million tonnes (51 billion pounds) of iron ore to be mined at the location over a six year period. The crushed ore would then be transported by road train with a payload up to 150 tonnes (330 thousand pounds) to the Utah Point Bulk Commodities Berth at Port Hedland. [1]
The Morenci Mine is a large copper mine located near Morenci, Arizona, United States.Morenci represents one of the largest copper reserves in the United States and in the world, having estimated reserves of 3.2 billion tonnes (3.5 × 10 9 short tons) of ore grading 0.16% copper.
The ore, the precious metal value of which was 54 percent from gold and 46 percent from silver, lasted only four years. [2]: 137–138 The Consolidated Virginia bonanza was discovered at the 1,200-foot (365-m) level in March 1873. The ore body was 900 feet (270 m) long and 200 feet (61 m) wide, but terminated at the 1650-foot (650-m) level.
Gilbert (pop. 1,799) is the location of Lake Ore-be-gone, an artificial lake created by flooding three open-pit iron ore mines. Hibbing (pop. 16,361) is the largest city by area in the state of Minnesota. It is home to the Hull–Rust–Mahoning Open Pit Iron Mine, one of the world's largest open pit iron mines.
The trucks haul ore from the shovel to primary crushers. Crushed ore is sent by a conveyor 1.8 m (6 ft) wide and 6.8 km (4.2 mi) long to the mill. Daily production from the mine is an average of 600,000 t (660,000 short tons) ore and waste combined. Ore from the mine has an average copper grade of 0.49% and an average gold grade of 0.39g/t. [3]
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
The mine is fully owned and operated by Rio Tinto Iron Ore and is one of seventeen iron ore mines the company operates in the Pilbara. [ 2 ] [ 3 ] In 2009, the combined Pilbara operations produced 202 million tonnes (450 billion pounds) of iron ore, a 15 percent increase from 2008. [ 4 ]