Rio Tinto Kennecott, the world's largest open-pit mine, is now open for visits for the 2025 season. Operating since 1903, this Utah-based open-pit mine has produced over 19 million tons of copper.

Rio Tinto Group (NYSE:RIO) was downgraded by Jefferies from Buy to Hold, with a price objective of 4,600 GBp instead of 5,700 ...

A WA mayor says a new iron ore mine could impact his community's groundwater and wipe out a tourist attraction.

Open-pit mining is commonly used to extract metallic ores like aluminum, bauxite, copper, gold, copper, and iron as well as non-metallic ores like coal, uranium, and phosphate. Open-pit mining is ...

the Minnesota Legislature approved $8.875 million for the construction of an overflow outlet on the Canisteo Mine Pit, a series of abandoned open-pit iron ore mines next to Bovey. Since 1980 ...

The maximum width of the open pit is 3.5 miles ... Taconite fires a blast to break iron ore and rock. There's a lot more to learn about the Hull Mahoning Rust Mine, and you're in luck - and ...

Due to the complexity of the ore body, conventional underground mining was not cost effective and the open pit method was preferred for consistency of ore grades and ease of extraction.

HELENA — The Montana House on Thursday endorsed a bill that would allow cyanide leaching of ore from new open-pit gold or silver mines in the state, and thus amend a 1998 voter-passed initiative ...