Our annual survey of subcontractors in the Southwest shows revenue totals plummeting in 2009. Last year, we ranked 160 companies totaling $6.13 billion based on their 2008 revenue. This year, the responses fell to 113 firms with revenue totaling just $3.58 billion in 2009. Photo Courtesy Carollo Engineers Crews pour concrete for a clarifier floor during construction on the third phase of the $60-million Casa Grande Water Reclamation Facility. Related Links: Top 113 Specialty Contractors State/Worldwide Market Sectors Safest Subcontractors Even with the drop in participation, the largest firms remain fairly consistent year to year. All but five of last