A cover for in-ground meter enclosures used in traffic loading conditions employs a relatively thin plate member formed of a ductile iron alloy and is dimensioned to extend laterally across a top opening of an in-ground meter enclosure. A plurality of relatively thick rib members of the ductile iron...http://www.google.com/patents/US20020090262?utm_source=gb-gplus-sharePatent US20020090262 - Cover for in-ground meter enclosures used in traffic loading conditions, and method for making
