Great Falls Tribune: Construction of the state’s largest wind farm to date will begin this spring 85 miles north of Great Falls in Toole County, the developer said this week. Naturener, the Spain-based developer of the project, has selected Mortenson Construction out of Minnesota, one of the nation’s leading builders of wind farms, as the general contractor. In the first phase, 69 towers capable of producing 103 1/2 megawatts will be erected in Toole County. The second phase includes land located …