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COPPER AND COPPER ALLOY SCRAP NO. 1 COPPER WIRE shall consist of clean, untinned, unsweated copper wire or cable, shall have a copper content of not less than 98.5# and 1 be free of copper wire or cable which is smaller than 16 B&S wire gauge, ashy copper wire or cable, burnt copper wire which is brittle, iron, solder, brass and all other foreign substances. NO. 1 HEAVY COPPER shall consist of clean, unsweated copper pieces, not exceeding 12 inches in width or diameter or 48 inches in length, shall have a copper content of not less than 98.5#, and shall be free of brazed, tinned, plated, soldered, or painted material and all foreign substances. NO. 2 COPPER WIRE AND MIXED HEAVY COPPER shall consist of copper wire or pieces not exceeding 12 inches in width or diameter or 48 inches in length, shall have a copper content of 96#, and shall be free of silicon bronze, copper-nickel alloys, and copper-clad steel. LIGHT COPPER shall consist of miscellaneous copper, shall have a copper content of 92#, and shall be free of radiators, bronze or brass screens, readily removable iron, lead-coated copper, and old electrotype shells. LEAD-COVERED COPPER WIRE AND CABLE shall consist of tinned or untinned copper wire and cable covered with a sheathing of lead and may also contain rubber, fabric or paper insulation, but must be free of steel—armored or other metallically armored material. INSULATED COPPER WIRE AND CABLE shall consist of tinned or untinned copper wire and cable covered with rubber, enamel, fabric or other insulation, but must be free of steel-armored or other metallically armored material, asbestos coverings or porcelain.