An "unknown substance" that caused the evacuation of a Broomfield office building Thursday morning has been deemed to not be dangerous though officials are still trying to detemine what it is.
By John AguilarThe Denver Post, Denver Post
Thu, 10/30/2014 - 11:01pm
An "unknown substance" that caused the evacuation of a Broomfield office building Thursday morning has been deemed to not be dangerous though officials are still trying to detemine what it is.