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Freighter Fairpartner carrying the disassembled tunnel boring machine into the Port of Seattle in April 2013. Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and was the world's largest earth pressure balance tunnel boring machine, [14] at a cutterhead diameter of 57.5 feet (17.5 m) across.
Retrieved December 27, 2017. Hitachi Construction Machinery Co., Ltd. (日立建機株式会社) is a Japanese construction equipment company which is into the manufacturing, sales and service of construction machinery, transportation machinery, and other machines and devices. [ 1] It is no longer a subsidiary of the Hitachi Group .
The U.S. Bureau of Mines was created in 1910 to investigate accidents, advise industry, conduct production and safety research, and teach courses in accident prevention, first aid, and mine rescue. The Federal Coal Mine Health and Safety Acts of 1969 and 1977 set further safety standards for the industry.
Hitachi, Ltd. [nb 1] (Japanese pronunciation: [çi̥taꜜtɕi]) is a Japanese multinational conglomerate founded in 1910 and headquartered in Chiyoda, Tokyo.The company is active in a range of industries, including digital systems, power and renewable energy, railway systems, healthcare products, and financial systems. [4]
Owner. Company. Peabody Energy. The North Antelope Rochelle Mine is the largest coal mine in the world. [1][2] Located in Campbell County, Wyoming, about 65 miles (105 km) south of Gillette, it produced 85.3 million tons of coal in 2019. [3][4] Peabody Energy opened the North Antelope Mine in the heart of Wyoming's Powder River Basin in 1983. [5]
Website. bunkerhillmining.com. The Bunker Hill Mine and Smelting Complex (colloquially the Bunker Hill smelter) was a large smelter located in Kellogg, Idaho, in the Coeur d'Alene Basin. When built, it was the largest smelting facility in the world. [2] It is located in what became known as the Silver Valley of the Coeur d'Alene Basin, an area ...
The 2010 Copiapó mining accident, also known then as the "Chilean mining accident", began on 5 August 2010, with a cave-in at the San José copper–gold mine, located in the Atacama Desert 45 kilometers (28 mi) north of the regional capital of Copiapó, in northern Chile. Thirty-three men were trapped 700 meters (2,300 ft) underground and 5 ...
Johannesburg is a census-designated place (CDP) in Kern County, California, in a mining district of the Rand Mountains. Johannesburg is located 1 mile (1.6 km) east-northeast of Randsburg, [6] at an elevation of 3,517 feet (1,072 m). [4] The terminus of the Randsburg Railway was here from 1897 to 1933. The population was 172 at the 2010 census ...