Rocket Boy's

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Across
  1. 3. A chemical used in the creation of gunpowder and other propelants
  2. 6. The amount and flow of money in a city/town
  3. 7. A rocket used by the U.S.S.R.
  4. 9. An oxidizer used in combination to make propelant
Down
  1. 1. A spot on the longs of somebody who has spent a lot of time work in and around coal dust hat would cause a tumor to form
  2. 2. A object used to carry a payload into the atmosphere using a fuel propelent
  3. 4. A concrete pad that people use to launch rockets without endangering or destroying property/life
  4. 5. Method of calculating distance using triangles
  5. 8. A substance used for generating thermal energy
  6. 10. A person that designs and tests products for the government and/or a private company