Hazmat 001

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Across
  1. 1. Canyon blown up loses crusty bug (5)
  2. 2. With know… (3)
  3. 4. Sexy. Enteligent? One. Begins new job (3)
  4. 5. Counted elfins rebuilt Simpsons handset (2)
  5. 6. Those that engage oneself (6)
  6. 7. Fresh (3)
Down
  1. 1. Great bit ends with a shock start (7)
  2. 3. Rises and materialises! (7)