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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