Equipment safety puzzle

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Across
  1. 4. / Oxygen is an ___________________
  2. 6. / Type of wrench that moves freely in one direction and applies torque in the other
  3. 8. / cylinder caps protect the ____________
  4. 10. / hammer with a rubber head
  5. 12. / The second lightest element, and lighter than air
  6. 13. / power tools are driven by electrical and _______________ power
  7. 14. / The contents of a gas cylinder are only determined by the _________
  8. 16. / cylinders should be tested every____________ years
Down
  1. 1. / gas cylinders are stored _____________
  2. 2. / Pounds per square inch ________
  3. 3. / Allow none of these when working with power tools
  4. 5. / Use power tools according to the operator's ____________
  5. 7. / Compressed air must be ______________ 30 PSIG when blowing off work areas
  6. 9. / number of pins on a grounded power tools plug
  7. 11. / Minimum distance, in feet, that must be between compressed gas and an ignition source
  8. 12. / used to cut material down to size
  9. 15. / Wrench that completely encloses a nut