Concrete and Cement

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Across
  1. 3. Occupational Health and Safety Administration
  2. 6. How a manufacturing process effects us
  3. 9. Materials exhausted into the atmosphere
  4. 11. Component added to make concrete
  5. 13. Time needed for concrete to set
  6. 15. Medium size rock added to cement
  7. 16. Binder for concrete
Down
  1. 1. Cement and aggregate
  2. 2. By-product of Kiln for concrete
  3. 4. Option that can be used
  4. 5. Device used to super-heat rock for concrete
  5. 7. Material added to concrete
  6. 8. Ways to protect ourselves
  7. 9. Environmental Protection Agency
  8. 10. Environmentally friendly
  9. 12. Small rock material added to cement
  10. 14. Volcanic rock used in ancient concrete