Resources tagged with "Metals"
Issues tagged Metals
AJ Gold Mine: SummaryThe Alaska Juneau (AJ) mine operated from 1917 to 1944, producing 90 million tons of gold-bearing ore, and was one of the largest mines in the world at the time. Currently, the City and Borough of Juneau controls the land, ... [read-more]
Acid Mine Drainage: Acid seep in Nevada - photo Glenn Miller Acid Mine Drainage refers to the outflow of acidic water from a mining site. In most cases, this acid comes from oxidation of iron sulfide (FeS2, also known as pyrite or "fool's ... [read-more]
Beatson Copper Mine: Beatson Mine Mine debris at Beatson Mine GET PHOTO SummaryThe Beatson copper mine in Prince William Sound produced over 182 million pounds of copper from 1904-1930. The mine site has an ongoing problem with acid mine drainage and is responsible ... [read-more]
Council Gold Prospect: BackgroundThe Council Gold Prospect is an early-stage exploration project located on the Seward Peninsula within the Council Mining District, an area that historically produced a significant amount of placer gold. Exploration in the area is focused on located the bedrock ... [read-more]
Donlin Gold Project: SummaryThe Donlin Gold project is a proposed gold mine located in southwest Alaska. This prospect is expected to produce around 1.5 million ounces of gold per year, and has an estimated resource base of around 34 million ounces (almost $58 ... [read-more]
Fort Knox Gold Mine: SummaryThe Fort Knox Mine, a large gold mine in Interior Alaska, produces around 370,000 ounces of gold per year. This mine is a significant producer of mining waste in Alaska, but has had fewer environmental problems than many other large ... [read-more]
Gold Cyanidation: SummaryCyanide (CN), a single carbon atom triple-bonded to a nitrogen atom, has proved extremely useful in extracting gold from ore. However, with a toxic reputation dating back to a murderous application in the Holocaust, its use in mining has been ... [read-more]
Gold Mining Methods: There are strange things done in the midnight sun By the men who moil for gold... -Robert Service (1907) SummaryHistorically, the majority of gold was mined from "placer deposits", where gold has settled out of an existing or ancient waterway ... [read-more]
Goodnews Bay Platinum: SummaryPlacer mining for platinum has taken place intermittently in the area near Goodnews Bay in southwest Alaska since 1927. Today, a company called XS Platinum Limited is re-processing the tailings left behind by past operations, using earthmoving equipment and modern ... [read-more]
Greens Creek Silver Mine: SummaryGreens Creek is a large, underground silver mine located in Southeast Alaska, which also produces smaller amounts of gold, lead, and zinc. The mine is the 5th largest silver producer in the world, and the largest in the US. The ... [read-more]
Illinois Creek Gold Mine: SummaryThe Illinois Creek Mine gold and silver mine in west central Alaska operated briefly in 1997, but the mining company went bankrupt in 1998. The state of Alaska took control of the mine in 1999 and soon after initiated a ... [read-more]
Johnson River Prospect: Summary High Camp Camping in Lake Clark National Park GET PHOTO The Johnson River Prospect is a high grade copper-silver-lead-zinc-gold deposit within Lake Clark National Park, in southwestern Alaska. The Cook Inlet Regional Corporation (CIRI), an Alaska Native-owned for-profit company ... [read-more]
Kennecott Copper Mine: SummaryThe Kennecott Copper Mine, for a time the largest copper mine in the world, operated from 1911 to 1938 in what is now Wrangell St. Elias National Park. The mine produced a total of around 4.6 million tons of ore, ... [read-more]
Kensington Gold Mine: SummaryThe Kensington Gold Mine, a mid-sized underground mining project in southeast Alaska began production during the summer of 2010. The mining prospect had been under study for many years, but fluctuations in gold prices and litigation questioning the disposal of ... [read-more]
Keystone Center Dialogue on Pebble Mine: (Author's Note: Because relatively little information about the Keystone Center dialogue is available online, parts of this article are based on our interviews with people involved, including the Keystone Center itself and an independent science panel expert) Pebble Prospect Drilling ... [read-more]
Lik Zinc Prospect: Summary Lik Prospect Aerial photo of the Lik Prospect GET PHOTO The Lik prospect, in northwest Alaska, is under exploration as a possible zinc/lead/silver mine by a small Canadian company called Zazu Metals Corporation, in collaboration with Teck Resources Limited. ... [read-more]
Livengood Gold Prospect: SummaryThe Livengood Project is located on a large gold resource located along the Trans Alaska Pipeline, about 70 miles north of Fairbanks. Talon Gold Alaska Inc. (a subsidiary of Canadian-based International Tower Hill Mines) is exploring the deposit, focusing on ... [read-more]
Mine Tailings: Basic Mining Terminology: An overview of basic mining terms and where various components of a mineral deposit end up. FULL FIGURE TerminologyMine tailings are materials left over after extraction of valuable minerals from ore. They are distinct from “waste rock” ... [read-more]
Mining Claims Near Pebble: Open tundra Vast plains of tundra with scattered trees and bushes dominate the area surrounding the Pebble Prospect. GET PHOTO BackgroundThe controversial Pebble Mine prospect has provoked a large amount of press within Alaska due to its size, profit ... [read-more]
Niblack Gold Prospect: SummaryThe Niblack Project is a copper-zinc-gold-silver deposit located on Prince of Wales Island, about 30 miles southwest of Ketchikan. The current "indicated resource" consists of 2.6 million tons of ore, composed of 1.18% copper, 2.19% zinc 2.33 g/t gold, and ... [read-more]
Nixon Fork Gold Mine: SummaryNixon Fork is a small, previously developed, gold and copper mine in Interior Alaska, which re-opened in July 2011. Operators hope to produce another 100,000-150,000 ounces of gold over the course of 3-5 years, and have also begun exploration that ... [read-more]
Pebble Mine (Copper/Gold Prospect): Outline Summary Location Preliminary Mine Plans Environmental Concerns Mining Waste Storage Possible Cyanide Use Impact on Fisheries Footprint of the Mine Opposition How Much Metal? Employment and Economics Latest News Further Reading Summary If built, the proposed Pebble Mine would ... [read-more]
Pogo Gold Mine: Pogo Mine aerial view Aerial view of the Pogo Mine source: Northern Alaska Environmental Center (2004). Copyright held by photographer. SummaryThe Pogo Mine is a large gold mine located in Interior Alaska, which produces around 400,000 ounces of gold per year. ... [read-more]
Queen Chrome/Red Mountain Mine: Summary Mine shaft Until prices tanked in the 1950s, Chrome was mined here. GET PHOTO The Queen Chrome Mine (often called "Red Mountain Mine") operated on Red Mountain near the town of Seldovia from 1942-1944 and again from 1952-1957. The ... [read-more]
Red Devil Mercury Mine: BackgroundThe Red Devil Mine extracted cinnabar that was processed into mercury on-site sporadically from 1933 to 1971. It was located in southwestern Alaska near the site of the proposed Donlin Creek Mine. It produced a total of 2.7 million pounds ... [read-more]
Red Dog Mine: Outline Summary History and Geology Mining Techniques and Waste Disposal Aqqaluk Project Employment and Revenue Sharing Environmental Concerns Latest News Summary The Red Dog Mine is a zinc and lead mine in northern Alaska, located about 80 miles north of ... [read-more]
Rock Creek Gold Mine: SummaryThe Rock Creek Gold mine operated near Nome in Western Alaska for only two months in 2008 before shutting down due to a combination of mechanical, environmental, and financing issues. Your browser does not support iframes. Rock Creek Gold Mine ... [read-more]
Salt Chuck Mine: SummaryThe Salt Chuck Mine operated as copper-palladium-gold-silver mine from around 1916 to 1941. Located on Prince of Wales Island in southeast Alaska, the site has a significant problem with acid mine drainage and is on the EPA National Superfund priority ... [read-more]
Tangle Lakes/MAN Prospect: Summary Tangle Lakes Area A river in the Tangle Lakes Area source: Northern Alaska Environmental Center (2007). Copyright held by photographer. The MAN project (also known as the Tangle Lakes project) is a large collection of nickel-copper-platinum mining leases spread over ... [read-more]
Upper Kobuk Mineral Project (formerly "Ambler Prospect"): SummaryThe Upper Kobuk Mineral Project seeks to develop a large and remote copper/zinc/gold/silver deposits in the northwestern Arctic. The project is focused on two areas, the Bornite deposit and the Arctic deposit. The Arctic metal sulfide deposit includes an estimated ... [read-more]
Water Management at Pebble Mine: (Author's Note: Much of the information about hydrology and water quality at the Pebble Mine site is based on publicly available data, released by PLP. In deference to their "do not cite or quote" policy, we have simply listed the ... [read-more]
Whistler Gold/Silver/Copper Prospect: SummaryThe Whistler gold/silver/copper prospect is located on the Skwentna River, about 100 miles northwest of Anchorage. The current official resource estimate (a sum of the indicated plus inferred resource) is around 3 million ounces of gold, 13 million ounces of ... [read-more]
Yakutat Forelands Prospects: (In early 2011 these claims were all forfeited and the land is once again owned by the BLM. No further exploration is taking place at either of these prospects)SummarySoutheast of Yakutat, AK, two adjacent blocks of mining claims were under ... [read-more]
Alaska Metals Mining: Background on Mining Acid Mine Drainage Gold Cyanidation Gold Mining Methods Mine Tailings Mining Taxes and Revenue in AK Perpetual Waste Storage Powering Large Mines in AK Rare Earth Elements (REEs) Active Mines in Alaska Fort Knox Gold Mine Greens ... [read-more]