 OMAHA, Neb.--BUSINESS WIRE--Valmont Industries, Inc. NYSE: VMI, a leading global provider of engineered products and services for infrastructure development and irrigation equipment and services for agriculture, today announced that management will participate in two investor conferences in September. Avner M. Applbaum, Executive Vice President and Chief Financial Officer, and Renee L. Campbell, Senior Vice President Investor Relations and Treasurer, will participate in Stifels London Indu 