Trading with Al, Zn, Pb, Sn, Cu and Ni…. Ag, Au, Pt, Pd, Rh, Bi, Co, Sb, Mo, In, Se, Te, Ge, Ga, V, Ta, Nb, Re, As, Hg, Ti, FeTi, FeW, Vn, Cr, Sb, Mo, Ho, Gd and others. … Physical forms : metals, sludges, flue dust, powders, drosses, slags, mattes, spent catalysts, concentrates, skimmings, filter cakes, anodic slimes, fines, residues, ore, turnings, powder, granles …