20 FAULT. Physiographic area where the resource is found. As of June 2008, many entries were classified as significant under less strict rules. The tonnage thresholds are from the mine model grade-tonnage studies.

Sandfire Resources America Inc Within the first year of operation, the pit extracted 17,000 tons of ore per day at a grade of 0.75% copper.

VERY LITTLE EXPLORATION AND DEVELOPMENT WORK HAS BEEN CARRIED OUT EAST OF THE NO. When open pit mining operations began in July 1955, near the Berkeley Mine shaft, the older mine gave its name to the pit.

[1] Since its closure, the water level in the pit has risen to within 150 ft (46 m) of the natural water table.

The acidic water in the pit carries a heavy load of dissolved heavy metals. White Sulphur Springs, MT 59645

The data are dynamic and may change over time. Minerals or other materials present in the mine.

Some of these species ingest metals and are being investigated as an alternative means of cleaning the water.[1].

[6] Necropsies showed their insides were lined with burns and festering sores from exposure to high concentrations of copper, cadmium, and arsenic. 1 World-class significance is determined by total endowment of the contained commodity. (406) 547-3466, Sandfire Resources America Inc. Black Butte Copper Project, Tintina Montana Inc. Black Butte Copper Project, Black Butte Copper Crosses the Permitting Finish Line with Positive Record of Decision, Sandfire Resources America completes an Updated Mineral Resource Estimate for the Johnny Lee Deposit, Black Butte Copper Project. Historically the site has been associated with the Butte Mining District which is now part of the Deerlodge National Forest. 20 FAULT. Get directions, maps, and traffic for Butte, MT. Butte Quartz Monzonite (Boulder Batholith), Basin Creek-Summit Valley Mining District.

", Butte Mineyards, Berkeley Pit, Butte, Silver Bow County, MT, https://en.wikipedia.org/w/index.php?title=Berkeley_Pit&oldid=982090094, Historic American Engineering Record in Montana, Environmental disasters in the United States, Short description is different from Wikidata, Articles with unsourced statements from November 2018, Articles needing additional references from August 2020, All articles needing additional references, Creative Commons Attribution-ShareAlike License. [6] ARCO, the custodian of the pit, denied that the toxic water caused the death of the geese, attributing the deaths to an acute aspergillosis infection that may have been caused by a grain fungus, as substantiated by Colorado State University necropsy findings. The data and maps may not be used to determine title, ownership, legal descriptions or boundaries, legal jurisdiction, or restrictions that may be in place on either public or private land. 1996 – April, Montana Resources (MR) and ARCO divert Horseshoe Bend (HSB) drainage water away from Berkeley Pit to slow filling rate, per ROD. A water treatment plant has been operating since October 2019. (C)2011-2018.

www.sandfireamerica.com. Location and description of mines and prospects, Butte 1 °X2° quadrangle, Montana 12 2. The user is responsible to verify the limitations of the geospatial data and to use the data accordingly. Browse mine owners by state in the United States of America, Browse owners by category (corporation, agency, private), Browse owners by interest relationship (partner, holder, agent, etc.).

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Settling Defendants issue contract and begin construction of treatment plant. Protecting the Smith River and its precious ecosystem is our top priority. [13], Construction began on a treatment plant at the Berkeley Pit in 2018, to treat water in the Pit before the water level before it contaminates local groundwater.

The treatment facility will be able to treat ten million gallons of water per day. Mineralogical and chemical alteration at or near the site, which may help to indicate the geographic extent of the geological processes producing the mine.

Production size when active was considered to be small. Learn about USGS mines. 2002 – Fall, USEPA and MDEQ issue order for Settling Defendants to begin design of water treatment plant for HSB water. The Berkeley Pit is a former open pit copper mine located in Butte, Montana, United States. [8] Immediately after the event, officials made efforts to scare birds away and prevent more from landing in the area. The Black Butte Copper Project will be a model for responsible, viable mining methods and outcomes.

We're Montanans. [7]), On November 28, 2016, several thousand snow geese died after a large flock landed in the pit's water to avoid a snow storm. Fish and Wildlife Service found that the 3,000 to 4,000 snow geese that died at the Berkeley Pit were killed by exposure to sulfuric acid and heavy metals.

The Leonard Copper Mine is in Butte-Silver Bow, Montana.

Whether it is filing a mine or researching one, the administering BLM office is going to be the definitive source. Learn about the studies, planning and 21st century methods that make this the safest operation Montana has ever seen.