0 0 0 0 7112.92 Waste and scrap of platinum, incl. metal clad with platinum, and other waste and scrap containing platinum or platinum compounds, of a kind used principally for the recovery of precious metal (excl. ash containing platinum or platinum compounds, waste andd scrap of platinum melted down into unworked blocks, ingots, or similar forms, and sweepings and ash containing precious metals) 10 4 3