Summertime in July

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Across
  1. 1. Type of clothing that must be worn by firework manufactures, so as to not create a static spark
  2. 4. Burns blue, and is used to help treat anemia, osteoarthritis and osteoporosis
  3. 6. A type of display with location associated
  4. 8. Purchaser of most fireworks in the world
  5. 13. Celebration in US
  6. 14. Burns silver/white, and a cofactor in more than 300 enzyme systems
  7. 15. Generate as much heat as a blowtorch
  8. 17. Burns orange, and is good for the bones
  9. 18. A type of defect linked to heavy metals used
  10. 19. Percentage of firework injuries to children under 16 years of age
  11. 20. First country to use shells for firecrackers to be loaded into cannons and shot into the air
Down
  1. 2. An organ affected by the heavy metals and dioxins in fireworks
  2. 3. A common color in fireworks
  3. 5. Uses fireworks to celebrate a holiday/storming of a prison
  4. 7. A type of display
  5. 9. Common cause of July ER visits
  6. 10. The hardest color to create in fireworks
  7. 11. A research group finding environmentally safe fireworks
  8. 12. Burns green, and can be part of an enema
  9. 16. Burns red, and teats depression
  10. 17. Country where fireworks originated