Miner, Insurer, Driller: Profiles of the 3 best

Chief information officers at the three top-ranked companies on our list talk about their work.

No. 1: Martin Ugarteche of Southern Copper On focusing on the bottom line.

No. 2: June Drewry of Chubb On being a business person first, and an I.T. specialist second.

No. 3: Cathy Tompkins of Chesapeake Energy On staffing up the technology function.