does sulfar , coal and something in wee make gunpowder?

Question: does sulfar , coal and something in wee make gunpowder?
- Keywords:
  chemistry,
  coal,
  gunpowder,
  sulfphur,
  sulfur,
  urine
Asked by keigm001 to Darren, Katherine on 23 Mar 2012.
- Katherine Haxton answered on 23 Mar 2012:
  
  Yes! sulfur, charcoal and potassium nitrate are used to make gunpowder. Potassium nitrate used to be made by urinating on piles of manure mixed with wood ash and then treating it to get the potassium nitrate out.

Question: does sulfar , coal and something in wee make gunpowder?