Glossary beginning with O

b c d e f i l m n o p r s t

OFE rod: Oxygen-free copper wire rod produced at the Cedynia wire rod plant using UPCAST technology.
Open-pit: Open area (hole) left after the excavation of soil, rock and ore from the surface of the earth.
Ore: Rock which contains one or more useful elements. Ore can be monometallic (containing a single metal) or polymetallic (containing more than one metal)