Harnischfeger Industries, St. Francis, Wis., hired SEI Investments as...

Harnischfeger Industries, St. Francis, Wis., hired SEI Investments as manager of managers for its U.S.-based employees’ defined benefit plan. The $520 million plan chose the new approach to asset management to ‘‘concentrate on running the business,’’ said Kim Kodousek, associate general counsel. The plan had employed several managers in various asset classes.