Mining

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