PHILADELPHIA, PA — (Marketwire) — 02/11/13 — Day & Zimmermann announced today that it has opened an engineering office in Wilmington, DE. With this expansion the firm continues to broaden its already significant national footprint. The addition of the Wilmington office gives Day & Zimmermann-s Engineering, Construction and Maintenance group 10 U.S. operating offices, including: Philadelphia and Lancaster, PA; Norfolk, VA; Greenville, SC; Tulsa, OK; Houston and Plano, TX; Scott Depot,
