All the year, we need buy the Mineral Ores.
Tantalite Ores(Ta2O5>10%)  & Columbite Ores(>40% Nb2O5)
Zinc Ores >45% Zn &   Lead Ores>45% Pb
Bismuth Ores >60% Bi  &  Cobalt Ores >7% Co,
Molybdenum Ores> 45% Mo &  Walframite/Tungsten Ores> 40% WO3
Antimony Ores>30% Sb  & Tin Ores(Tn>20%) ,
Nickel ore(>3% Ni),    & Copper ore( Cu>10%, S>20%) etc
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%;