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Normal operations resume after hazardous spill in Tucson partially closed highway and led to shelter-in-place order, officials say
By Paul P. Murphy, Chris Boyette & Paradise Afshar
Arizona authorities issue evacuation, shelter-in-place orders after nitric acid spill
By Louis Casiano
Hazmat warning issued after Tucson freeway crash
By Jamie Donnelly
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Arizona truck spill of toxic acid closes interstate highway
By Gerry Doyle & Steve Gorman
Hazmat spill in Tucson shuts down highway, driver killed
By Jose R. Gonzalez