A New Kensington firm that specializes in industrial testing has been acquired by a New Jersey company for $74 million in cash. Mistras Group Inc. (NYSE: MG), a publicly traded company, announced Thursday it had acquired West Penn Non-Destructive Testing. West Penn is based on Industrial Boulevard in New Kensington and also has locations in Richburg, S.C., and Ellabell, Ga., near Savannah, Ga. Mistras said it had named West Penn President Jim DeCellis as its regional manager to oversee the West...