A method including forming a bilayer polymer film having an oriented polypropylene film and a metallocene-catalyzed polypropylene film wherein the metallocene-catalyzed polypropylene film has a seal initiation temperature of from 80\xb0 C. Methods which cause the copy process to become lengthy and inconvenient, or which produce copies that are significantly measurably different from the original and therefore be recognizable as copies, may deter or prevent an unauthorized individual from making copies. A circular disk assembly has adjustable pavement cutters adjustably positioned from there within an inter-related manhole centering and a locking alignment and engagement plate assembly define a one-step cutting and removal of an existing manhole from the street for replacement. Activated pure HA-positive toxins and neurotoxin are obtained by simple procedures. The stripper includes a cover defining a plurality of holes and a positioning shaft. It comprises a slat support arm which is movable to deploy a slat from a leading edge of an aircraft wing about an axis of rotation of the arm and a slat mount on a slat which is coupled to one end of said slat support arm by a joint.