Materials tested for building hurricane-proof safe rooms

The cannon was built in 2005 by Robertson and doctoral candidate Anindya Sengupta in the University of Hawaii's Department of Civil and Environmental Engineering with $450,000 from the state Legislature. The wind cannon is one of just five in the nation and is closely based on a prototype built by Texas Tech to simulate tornadoes.

Read the rest of the story at Honolulu Star-Bulletin