Mining

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Across
  1. 2. Bin for washing
  2. 8. To remove impurities or unwanted elements
  3. 9. Uncovered
  4. 11. metamorphic and igneous
  5. 17. Opposites attract
  6. 18. I had great fun, I had a ______
  7. 19. Barium, feldspar, gypsum, zinc
  8. 20. Elevator
  9. 21. A quarter takes five of these
Down
  1. 1. A heart of
  2. 3. Second place medal
  3. 4. Implement for making holes
  4. 5. The study of rocks and minerals
  5. 6. Town: Creighton
  6. 7. Object hurled toward Earth from space
  7. 10. Left after an impact from a large object
  8. 12. Pennies used to be made with this material
  9. 13. Personal Protective Equipment
  10. 14. Detonated from afar
  11. 15. A type of rock that contains sufficient minerals with important elements, including metals
  12. 16. A girl's best friend
  13. 20. Material left over after smelting process
  14. 22. A type of large, long-necked bird