4 Explosions in US ? All Big, all Friday Afternoon

Explosions Seen At Fracking Wastewater Tank Site GREELEY, Colo denver.cbslocal.com/2015/04/17/fire-explosion-seen-at-weld-county-wastewater-tank-site/ Norfolk Police and Norfolk Fire-Rescue responded to a possible explosion and building collapse on Friday night at the 200 block