Intro to Mining Resources. Key Concepts in this Unit: Obtaining metal resources from the earth is a very involved process. Many things need to be taken into consideration when deciding whether or not to open a mine. The products that we use everyday come from the earth.
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Key Concepts in this Unit:
Obtaining metal resources from the earth is a very involved process.
Many things need to be taken into consideration when deciding whether or not to open a mine.
…But many people don’t realize that even the raw materials we use to make products must be processed before they are usable when they are dug out of the ground.
So how do you get the resource?
Rock is crushed into pieces of about 3cm diameter.
The sodium hydroxide solution is stirred around in the giant vat…
Heavier rock fragments settle
to the bottom.
Then the solution is filtered,
which separates the waste material from the liquid that contains the aluminum.
When the tailings dam burst, a wave up to 7 feet high rushed through the town carrying a very basic solution of toxic metals into the nearby town.