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EspañolRED DOG MINE, ALASKA
'Red Dog Mine' is a zinc mine and a census-designated place in the Northwest Arctic Borough in the U.S. state of Alaska. As of 2004, the population of the CDP is 44.
The mine is the world's largest producer of zinc concentrate[1] producing 10% of the world's zinc[2]. It is located on land owned by the NANA Regional Corporation and operated by the commercial mining company Teck Cominco in partnership with NANA.[3] Zinc concentrate taken from the mine is trucked westward to a shipping facility on the Chukchi Sea and stored there until it is picked up. The sea at that latitude is only passable for shipping about 100 days per year. The mine allows schools to visit for field trips.[4]
Red Dog is an exaple of a sedimentary exhalative deposit, with the zinc-lead ore considered to have been deposited on the sea floor as astrata of sulphide sediment[5] . The source of the zinc-lead sulphides is considered to be sediments lower down in the sedimentary sequence, which travelled up a fault and discharged into the sea bed, similarly to the process srrounding black smokers.
The sedimentary strata containing the Red Dog ores have been extensively thrusted and faulted subsequently, forming a thrust duplex.
Red Dog Mine is located at (68.071989, -162.876044). It is in the DeLong Mountains in the Brooks Range about 144 km (90 miles) north of Kotzebue and 88 km (55 miles) from the Chukchi Sea.
According to the United States Census Bureau, the CDP has a total area of 173.2 km² (66.9 mi²), all land.
As of 2004, there were 44 people, 4 households, and 3 families residing in the CDP. The population density was 0.2/km² (0.5/mi²). There were 0 housing units at an average density of 0.0/km² (0.0/mi²). The racial makeup of the CDP was 31.25% White, 65.62% Native American, and 3.12% from two or more races.
There were 4 households out of which 75.0% had children under the age of 18 living with them, 25.0% were married couples living together, and 0.0% were non-families. No households were made up of individuals and none had someone living alone who was 65 years of age or older. The average household size was 2.00 and the average family size was 4.00.
In the CDP the population was spread out with 18.8% from 18 to 24, 62.5% from 25 to 44, 18.8% from 45 to 64, . The median age was 34 years. For every 100 females there were 700.0 males. For every 100 females age 18 and over, there were 700.0 males.
The median income for a household in the CDP was $0, and the median income for a family was $0. Males had a median income of $0 versus $0 for females. The per capita income for the CDP was $34,438. There were no families and 37.9% of the population living below the poverty line, including no under eighteens and none of those over 64.
Alaska Airlines serves this community. Until 2007, Boeing 737-200 Combi aircraft was used which had a cargo door what was usually the front part passenger compartment and a separate rear passenger cabin. In 2005, the runway was upgraded from gravel to asphalt in anticipation of replacement with newer Boeing 737-400 Combi aircraft which are not equipped to land on gravel.[6][7]
Due to the absence of hotels in the settlement, when the Alaska Airlines flight has been cancelled, passengers sometimes were allowed to stay in the miner's dormitory while the miners were working during the day.6
According to the EPA,[8] Red Dog mine releases more toxic chemicals into the environment than any other operation in the United States.[9]
On June 13, 2007 the State of Alaska removed two creeks near the Red Dog Mine in Northwest Alaska from the most-polluted waters list with EPA's approval.[10]
★ Sedimentary exhalative deposits
★ Acid mine drainage
★ Land rehabilitation
★ Open cut
★ Metallurgy
★ Mining
1. Plant Operation News: North America
2. The Giant Red Dog Massive Sulfide Deposit. Dr. David Leach. Pesquisador do USGS e Conferencista da Society of Economic Geologists
3. Zinc Mining – Red Dog Mine. Teck Cominco Ltd.
4. Piqatigiich School to Work Program. Northwest Arctic Borough School District (2006)
5. Lava Lamp-Like Process Caused World's Largest Zinc Deposit
6. Arctic Eagles Bid Mud Hens Farewell at Alaska Airlines
7. Red Dog - Airport Fact Sheet. FareCompare.com
8. Pollution Rankings by Facility. Scorecard.org
9. What's New: Toxics in Your Community
10. Kenai River and Big Lake designated heavily polluted
Red Dog is the safest mine running in alaska
★ NANA Regional Corporation
★
The mine is the world's largest producer of zinc concentrate[1] producing 10% of the world's zinc[2]. It is located on land owned by the NANA Regional Corporation and operated by the commercial mining company Teck Cominco in partnership with NANA.[3] Zinc concentrate taken from the mine is trucked westward to a shipping facility on the Chukchi Sea and stored there until it is picked up. The sea at that latitude is only passable for shipping about 100 days per year. The mine allows schools to visit for field trips.[4]
| Contents |
| Geology |
| Geography |
| Demographics |
| Transportation |
| Pollution |
| See also |
| References |
| External links |
Geology
Red Dog is an exaple of a sedimentary exhalative deposit, with the zinc-lead ore considered to have been deposited on the sea floor as astrata of sulphide sediment[5] . The source of the zinc-lead sulphides is considered to be sediments lower down in the sedimentary sequence, which travelled up a fault and discharged into the sea bed, similarly to the process srrounding black smokers.
The sedimentary strata containing the Red Dog ores have been extensively thrusted and faulted subsequently, forming a thrust duplex.
Geography
Red Dog Mine is located at (68.071989, -162.876044). It is in the DeLong Mountains in the Brooks Range about 144 km (90 miles) north of Kotzebue and 88 km (55 miles) from the Chukchi Sea.
According to the United States Census Bureau, the CDP has a total area of 173.2 km² (66.9 mi²), all land.
Demographics
As of 2004, there were 44 people, 4 households, and 3 families residing in the CDP. The population density was 0.2/km² (0.5/mi²). There were 0 housing units at an average density of 0.0/km² (0.0/mi²). The racial makeup of the CDP was 31.25% White, 65.62% Native American, and 3.12% from two or more races.
There were 4 households out of which 75.0% had children under the age of 18 living with them, 25.0% were married couples living together, and 0.0% were non-families. No households were made up of individuals and none had someone living alone who was 65 years of age or older. The average household size was 2.00 and the average family size was 4.00.
In the CDP the population was spread out with 18.8% from 18 to 24, 62.5% from 25 to 44, 18.8% from 45 to 64, . The median age was 34 years. For every 100 females there were 700.0 males. For every 100 females age 18 and over, there were 700.0 males.
The median income for a household in the CDP was $0, and the median income for a family was $0. Males had a median income of $0 versus $0 for females. The per capita income for the CDP was $34,438. There were no families and 37.9% of the population living below the poverty line, including no under eighteens and none of those over 64.
Transportation
Alaska Airlines serves this community. Until 2007, Boeing 737-200 Combi aircraft was used which had a cargo door what was usually the front part passenger compartment and a separate rear passenger cabin. In 2005, the runway was upgraded from gravel to asphalt in anticipation of replacement with newer Boeing 737-400 Combi aircraft which are not equipped to land on gravel.[6][7]
Due to the absence of hotels in the settlement, when the Alaska Airlines flight has been cancelled, passengers sometimes were allowed to stay in the miner's dormitory while the miners were working during the day.6
Pollution
According to the EPA,[8] Red Dog mine releases more toxic chemicals into the environment than any other operation in the United States.[9]
On June 13, 2007 the State of Alaska removed two creeks near the Red Dog Mine in Northwest Alaska from the most-polluted waters list with EPA's approval.[10]
See also
★ Sedimentary exhalative deposits
★ Acid mine drainage
★ Land rehabilitation
★ Open cut
★ Metallurgy
★ Mining
References
1. Plant Operation News: North America
2. The Giant Red Dog Massive Sulfide Deposit. Dr. David Leach. Pesquisador do USGS e Conferencista da Society of Economic Geologists
3. Zinc Mining – Red Dog Mine. Teck Cominco Ltd.
4. Piqatigiich School to Work Program. Northwest Arctic Borough School District (2006)
5. Lava Lamp-Like Process Caused World's Largest Zinc Deposit
6. Arctic Eagles Bid Mud Hens Farewell at Alaska Airlines
7. Red Dog - Airport Fact Sheet. FareCompare.com
8. Pollution Rankings by Facility. Scorecard.org
9. What's New: Toxics in Your Community
10. Kenai River and Big Lake designated heavily polluted
Red Dog is the safest mine running in alaska
External links
★ NANA Regional Corporation
★
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