Ground Truth Trekking

Resources tagged with "Metals"

Issues tagged Metals

Acid Mine Drainage: Acid Seep GET PHOTO Acid Seep in Nevada source: Copyright held by photographer Summary Acid mine drainage (AMD) refers to the outflow of acidic water from a mining site. In most cases, this acid comes primarily from oxidation of iron sulfide ... [read-more]
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]
BC Transboundary Mines: The "transboundary mines" is the informal name for a group of mines (only one of which, Red Chris, is operational) in northern British Columbia watersheds which drain across the U.S.-Canada border into Alaska.These mines target ore bodies which collectively contain ... [read-more]
Beatson Copper Mine: Beatson Mine GET PHOTO Mine debris at Beatson Mine 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]
Block Caving: Our Pebble Articles Overview Block Caving Water Management Nearby Mining Claims Keystone Dialogue Perpetual Maintenance Tailings Storage Alternative Tailings Storage Opposition Powering Pebble Earthquake Risks Block caving is an underground hard rock mining method that involves undermining an ore body, ... [read-more]
Chandalar Gold Prospect: BackgroundThe Chandalar mining prospect is a placer mining and early-stage hard rock exploration project located about 190 miles north of Fairbanks, Alaska.  The mining claims, held by Goldrich Mining Company, total around 22,840 acres and include both active placer claims ... [read-more]
Council Gold Prospect: BackgroundThe Council Gold Prospect was 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 295 square kilometer area was focused on ... [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 $56 ... [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: Cyanide Vat Leaching GET PHOTO Cyanide leach vats at Alaska's Fort Knox Mine source: Copyright held by photographer SummaryCyanide (CN), a single carbon atom triple-bonded to a nitrogen atom, has proved extremely useful in extracting gold from ore.  However, with a ... [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: Platinum GET PHOTO Platinum nugget from Goodnews Bay source: Creative Commons Attribution Share Alike SummaryPlacer mining for platinum has taken place intermittently in the area near Goodnews Bay in southwest Alaska since 1927.   Recently, a company called XS Platinum Limited was ... [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 GET PHOTO Camping in Lake Clark National Park 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: Our Pebble Articles Overview Block Caving Water Management Nearby Mining Claims Keystone Dialogue Perpetual Maintenance Tailings Storage Alternative Tailings Storage Opposition Powering Pebble Earthquake Risks (Author's Note: Because relatively little information about the Keystone Center dialogue is available online, parts ... [read-more]
KSM Gold-Copper Prospect: KSM (Kerr-Sulpheretts Mitchell) is a series of extremely large gold-copper porphyry ore deposits in British Columbia.  Located in rugged mountainous terrain near the BC-Alaska border, the prospecting company Seabridge Gold proposes to build one of North America’s largest mines at ... [read-more]
Lik Zinc Prospect: Summary Lik Prospect GET PHOTO Aerial photo of the Lik Prospect 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]
Metal Mining and Alaska's Economy: Alaska’s entire mining industry produced $3.4 billion in 2013, about 6.5% of the Gross State Product. Mining (of all types) was the 5th largest industry in the state economy, after petroleum, government, fishing, and tourism/recreation. Metal Mine Economic Facts: Starred (*) items include ... [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 Mine tailings are the ore waste of mines, and are typically a mud-like material.Worldwide, the storage and handling of ... [read-more]
Mining Claims Near Pebble: Our Pebble Articles Overview Block Caving Water Management Nearby Mining Claims Keystone Dialogue Perpetual Maintenance Tailings Storage Alternative Tailings Storage Opposition Powering Pebble Earthquake Risks  BackgroundThe controversial Pebble Mine prospect has provoked a large amount of press within Alaska due ... [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 and then suspended operations in June 2013.  Operators hoped to produce another 100,000-150,000 ounces of gold over the course of 3-5 ... [read-more]
Pebble Mine (Copper/Gold Prospect): Our Pebble Articles Overview Block Caving Water Management Nearby Mining Claims Keystone Dialogue Perpetual Maintenance Tailings Storage Alternative Tailings Storage Opposition Powering Pebble Earthquake Risks Summary If built, the proposed Pebble Mine would be North America's largest gold and copper ... [read-more]
Pogo Gold Mine: Pogo Mine aerial view GET PHOTO Aerial view of the Pogo Mine source: 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.  This mine is ... [read-more]
Queen Chrome/Red Mountain Mine: Summary Mine shaft GET PHOTO Until prices tanked in the 1950s, Chrome was mined here. 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.  The mine is currently owned by the Bering Straits Native ... [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 GET PHOTO A river in the Tangle Lakes Area source: 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 173,000 acres of ... [read-more]
Upper Kobuk Mineral Project (formerly "Ambler Prospect"): SummaryThe Upper Kobuk Mineral Project seeks to develop large and remote copper/zinc/gold/silver deposits in the northwestern Arctic.  NovaCopper currently proposes to build a major open pit, truck-and-shovel mine at the prospect.Exploration of the prospect has focused on two areas, the ... [read-more]
Water Management at Pebble Mine: Our Pebble Articles Overview Block Caving Water Management Nearby Mining Claims Keystone Dialogue Perpetual Maintenance Tailings Storage Alternative Tailings Storage Opposition Powering Pebble Earthquake Risks (Author's Note:  Much of the information about hydrology and water quality at the Pebble Mine ... [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)Alaska's Economy & Metal Mining Active Mines in Alaska Fort ... [read-more]

Photos tagged Metals

Mine workers
Platinum