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Mining

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Mining

  1. 1. Mrs. Harris March 25th 2011
  2. 2. Today: <ul><li>Effects of mining </li></ul><ul><li>Conserving Earth’s natural resources </li></ul>
  3. 3. Mining- Benefits <ul><li>Our world functions the way it does because of our ability to build and use things made from natural resources. </li></ul><ul><li>Iron, copper, aluminum, gold, silver, diamonds </li></ul><ul><li>Coal & oil (not a technical mineral) </li></ul>
  4. 5. Mining- Costs <ul><li>There is a limited supply of these minerals on Earth. They are becoming harder to find. </li></ul><ul><li>We dig deeper and faster into Earth’s crust to extract these minerals that we want. </li></ul>
  5. 6. Example: Coal <ul><li>How long does it take to form? </li></ul>
  6. 7. Example: Coal <ul><li>How long does it take to form? </li></ul><ul><li>Between thousands to millions of years. </li></ul>
  7. 8. Example: Coal <ul><li>How long does it take to form? </li></ul><ul><li>How fast are we using it? </li></ul><ul><li>Between thousands to millions of years. </li></ul>
  8. 9. Example: Coal <ul><li>How long does it take to form? </li></ul><ul><li>How fast are we using it? </li></ul><ul><li>Between thousands to millions of years. </li></ul><ul><li>We use 1.9 billion tons a year worldwide. </li></ul>
  9. 10. Example: Coal <ul><li>How long does it take to form? </li></ul><ul><li>How fast are we using it? </li></ul><ul><li>Between thousands to millions of years. </li></ul><ul><li>We use 1.9 billion tons a year worldwide. </li></ul>
  10. 13. Impacts of Mining <ul><li>Surface mines </li></ul><ul><ul><li>Removes layers of soil and rock </li></ul></ul><ul><ul><li>Super-mineralized water run off is toxic </li></ul></ul><ul><li>Chile’s Gold Mine  click to watch </li></ul><ul><li>Effects of coal mining in West Virginia  click to watch </li></ul><ul><li>Subsurface mines </li></ul><ul><ul><li>Can cause sinkholes and cave-ins </li></ul></ul>
  11. 14. How to minimize impact: <ul><li>Federal Laws to reduce pollution and habitat destruction </li></ul><ul><li>Reclamation </li></ul><ul><ul><li>Returning the land to it’s original state after use. </li></ul></ul>
  12. 15. When were they made?: (take a guess) <ul><ul><li>I’m sure we’ve been protecting our waterways and drinking water and cleaning up our messes for a long time, right? </li></ul></ul><ul><ul><li>Clean Water Act </li></ul></ul><ul><ul><li>Safe Drinking Water Act </li></ul></ul><ul><ul><li>CERCLA Comprehensive Environmental Response Compensation and Liability Act </li></ul></ul>
  13. 16. When were they made: <ul><ul><li>Clean Water Act </li></ul></ul><ul><ul><li>1972 </li></ul></ul><ul><ul><li>Safe Drinking Water Act </li></ul></ul><ul><ul><li>1974 </li></ul></ul><ul><ul><li>CERCLA Comprehensive Environmental Response Compensation and Liability Act </li></ul></ul><ul><ul><li>-- 1980 </li></ul></ul>~Just ask your parents and grandparents!
  14. 17. Being smart with what we have <ul><li>Recycling and conserving </li></ul><ul><ul><li>Recycling </li></ul></ul><ul><ul><ul><li>Requires less energy than mining and processing </li></ul></ul></ul><ul><ul><ul><li>Metals and glass can be efficiently recycled </li></ul></ul></ul><ul><ul><ul><li>Check out why cans are best!  click here </li></ul></ul></ul><ul><ul><li>Conserving </li></ul></ul><ul><ul><ul><li>Preservation and wise use of resources </li></ul></ul></ul>

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