Copper concentrate.
Copper ore.
Copper ore.
Copper Concentrate.
Copper Concentrate.
Copper ore and concentrate.
Copper Ore.
Copper ore-and copper concentrate.
Copper-concentrate.
Copper Ore.
Copper ore.
Copper ore.
Copper slag grit.
Copper ore.
Copper ore.
Copper ore.
Copper ore.
Copper ore.
Copper ore.
Copper ore.