Robert P. Gannon President, Chairman and CEO The Montana Power Company Revenue: $1.2 billion Employees: 2,906 Before joining Montana Power in 1974 as an attorney, Bob Gannon served as an assistant attorney general for the state of Montana for two years and as an assistant U.S. attorney for another two and a half years. A native of Butte, Montana, Gannon is chairman of the … [Read more...] about The 100 Most Influential Irish Americans in Business: R. Gannon – M. Gibbons