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MINING 101
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Have you used any of these lately?
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School Bus?
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Cereal?
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Bicycle or Skateboard?
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Car?
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Alarm Clock?
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Pencil or Computer?
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Stove, Microwave, Cupboards, Countertops?
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Coins?
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Video Games?
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Musical Instruments?
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Toothbrush and Toothpaste?
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Cellphone
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Flatware or Television?
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Do the items in the photographs have anything in common?
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That’s a lot of rocks and minerals!
How do you think we get all those rocks and minerals?
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If you said “Mining,” you are right!
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A mine is a place where rocks and minerals of value are extracted.
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Government Permits are needed before and during all mining processes
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The first phase of mining is called EXPLORATION.
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What happens during exploration?
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Satellites, airplanes and helicopters can be used to help find mineral deposits.
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A geologist is a scientist who studies the Earth and it’s processes.
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Radioactive minerals like uranium may be found with a Geiger counter.
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If an area looks promising, a drill is moved to the site.
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The drill goes deep into the Earth’s crust removing long cylinders of rock called cores.
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Geologic maps are created.
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What about the environment?
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Before a mine can be opened, a complete environmental study is done so the land can be rehabilitated during and after mining.
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Environmental protection throughout the mining process
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What about people? What about people?
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Mining provides resources to remote locations:
Mining Towns Ketchikan, Alaska Mining provides resources to remote locations: Transportation Education Housing Jobs
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For Example Battle Mountain Trades Program Newmont Mining Corporation High school students learned building and selling skills.
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An African Project AngloGold Ashanti Create medical programs improving the quality of health for people living in areas near their mining operations.
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There are two basic types of Mining.
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Underground Mining
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Surface Mining
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Surface Mining Two-story high haul trucks can carry hundreds of tons of ore. Kennecott Utah Copper’s Bingham Canyon Mine
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Surface mining Albert Frei & Sons Sand Quarry in Idaho Springs, Colorado Rock of Ages Granite Quarry in Barre, Vermont
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Underground Mining Nickel Miners Underground Drill
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Underground Mining Longwall coal mining cuts a slice from the long wall. Notice the safety gear that these miners wear everyday.
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Miner Safety All mining companies have extensive safety training. No one can go underground without it. Miners must be certified and demonstrate safety knowledge.
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is the process of removing mineral resources from the Earth’s crust.
Extraction is the process of removing mineral resources from the Earth’s crust.
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Drilling to set charges for a blast.
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Carefully controlled blasting breaks up the rock.
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Blasted ore is hauled to the crusher.
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Crushers/grinders break up the ore to the size of small pebbles or sand.
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Processing Minerals are different so many different types of processing are needed to remove them from the rock. Following are just a few processes.
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Milling This rock contains gold. Milling is the process of separating the desired mineral from the unwanted rock (called gangue.) See if you can find the specks of gold.
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Concentration and Flotation
Some minerals are separated by washing, flotation or magnetic separation. Here a combination of water, chemicals, air and agitation make desired mineral particles float to the top of the bubbles.
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Smelting Smelting uses high heat and chemicals to remove base metals and impurities from concentrates. Smelting furnaces can reach temperatures above 1064°Celcius. What would that number be in Fharenheit?
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Leaching Ariel view of a leach pad at a copper mine in Morenci, Arizona. These pads are the size of several football fields. This one is being stacked with crushed ore.
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Electrowinning Starter sheets are lowered into a solution. An electrical charge passes through causing copper ions to stick to the sheets.
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How much land does Mining use in the US?
Land used by Agriculture Washington D.C. Land used by 80 Years of Mining Nearly 50% has been reclaimed.
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Reclamation Modern mines reclaim and rehabilitate the land during and after mining is completed, returning the land to useful purposes.
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Reclaimed by Starvaggi Industries in West Virginia.
Before After
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ForkCreek Coal Mining Co., West Virginia
Before After
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Homestake Mining Company’s McLaughlin Gold Mine in California
Before After
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MINING 101 THE END
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