Blackstone, the private equity firm, has agreed to acquire Tradesmen International, the leading agency-based provider of outsourced skilled craftsmen to non-residential construction and industrial contractors in North America, from Wellspring, the private equity firm. Financial terms were not disclosed. “We are excited to invest in Tradesmen, the nation’s leading provider of outsourced skilled craftsmen. We look forward to working with their outstanding management team to support their exciting growth strategy.” Peter Wallace, Blackstone Senior Managing Director.