 GREENWICH, Conn.--BUSINESS WIRE--Atlas Holdings Atlas announced today that it has closed the previously announced sale of portfolio company Banker Steel to DBM Global Inc. DBM Global, a family of companies providing fully integrated structural and steel construction services. DBM Global is an operating subsidiary of HC2 Holdings, Inc. NYSE: HCHC, a diversified holding company with interests primarily in Infrastructure, Life Sciences and Spectrum. Atlas invested in Banker Steel in 20 