Three types of explosive materials - including sticks of dynamite - were stolen from a University of Arizona mining laboratory near Sahuarita, officials said. The explosives were discovered missing Thursday from the UA's San Xavier Mining Laboratory in the 6200 block of West Ocotillo Ranch Road, said Sigberto Celaya, resident agent of the Bureau of Alcohol, Tobacco, Firearms and Explosives. They were stolen sometime between Aug. 7 and Aug. 14 from the lower level of the mine, he said. The explosives, normally used in mining, could be used to destroy a medium-size building, Celaya said. One item stolen was a...