Vacuum turned into a bomb?

• said_aouita

  

  Shop vacuum detonated as homemade bomb
  
  
  http://www.whiotv.com/news/news/local/shop-vacuum-detonated-homemade-bomb/nGKxW/
  
  
  Of course I'd never ever wanna try doing something like this myself! Just how it works, I wonder.
  
  Belly or somebody on the OC has to know how-to turn a shop vac into a bomb. Can you help me?