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bulwark (m)
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We also need buy Titanium ore(TiO2>50%, Fe2O3<14%) and Chrome ore Lump(Cr2O3>45%, Cr:Fe ratio>2.6) and Zircon Sand(ZrO2>55%; TiO2<0.3%; Fe2O3<0.10%; Al2O3< 0.8%;SiO< 34%; P2O5< 0.2£¥) Lead ore(pb>50%, Cu< 3%; Zn<10%, As<0.6%, MgO<2%, Al2O3<4%). Zinc ore(Zn>40%, S>20%, Cu<2%, Pb<3%; Fe<12%) Tungsten ore(WO3>45%, S<0.8%, P<0.10%, As<0.20%, Cu<0.25%, SiO2<7%, As<0.20%,Sn<0.40%) Molybdenum Ore(Mo>45%, SiO2<12%, Cu<1.5%, Pb<1.5%,As<0.25%, P<0.15%,Sn<0.15%; CaO<3%) Tin ore(Tn>20%, As+S <6%, Cu<0.6%, Fe<18%, As<2%) Antimony ore(S>16%, Sb>30%, As<0.6%, Pb<0.3%, Bi<60ppm) Tantalite Ores(Ta2O5>10%, Nb2O5>5%, ThO2 + U3O8 0.5% Max) Columbite Ores(>40% Nb2O5, Ta2O5 4%~6%, ThO2 + U3O8 0.5% Max ) Nickel ore(Ni 3% Min; MgO+Al2O3 15% Max; As 0.2% Max; Pb +Zn 0.4% Max) Copper ore(Cu>20%, S>20%, As<0.8%, Pb+Zn<12%) Bismuth Ores(Bi>40%) Cobalt Ores(Co>7%), As 0.3% max These index are only for reference, if some specification is not eligible, we maybe want to buy
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