LSs of Polymer Corporation factory in Sarnia, Ontario. MCS of large roller, man pulling out strip of synthetic rubber. MS of cardboard boxes moving past on conveyor. HAMS inside shipping room, men pulling hand carts loaded with cardboard boxes. MS of pneumatic press moving down. MSs of men removing strips of rubber coming out of cullinator. CU of rubber coming out of cullinator. MS of two men examining tires of various sizes. MCS of men posing proudly holding tire.