Shall consist of miscellaneous, unalloyed copper scrap
having a nominal 92% copper content (minimum
88%) as determined by electrolytic assay and shall
consist of sheet copper, gutters, downspouts, kettles,
boilers, and similar scrap.
Should be free of the following:
Burnt hair wire; copper clad; plating racks; grindings;
copper wire from burning, containing insulation;
radiators and fire extinguishers; refrigerator units;
electrotype shells; screening; excessively leaded,
tinned, soldered scrap; brasses and bronzes; excessive
oil, iron and non-metallics; and should be reasonably
free of ash. Hydraulically briquetted copper subject to
agreement. Any items excluded in this grade are also
excluded in the higher grades above.
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