By Douglas Towne The name “San Xavier” is synonymous with the iconic “White Dove of the Desert,” the oldest European structure in Arizona. The Mission San Xavier del Bac, located about 10 miles south of Downtown Tucson along the Santa Cruz River, was completed by 1797. The internationally-known white-stucco Moorish structure is renowned for its Easter torch-light parade by Tohono O’odham and Yaqui tribal members. In the Arizona construction industry, San Xavier is also the na