cobalt
cobalt ore

copper
copper ore

gold
gold ore

high-grade
high-grade ore

iron
iron ore

kidney
kidney ore

low-grade
low-grade ore

magnetic
magnetic iron ore

manganese
manganese ore

meadow
meadow ore

melt down
to melt down from the ore

mercury
mercury ore

mill
to mill ore

nickel
nickel ore

ore
iron ore

ore-bearing
metalífero

Ore.
Oregon

rock
to rock the ore

rude
rude ore

separator
ore separator

sluice
to sluice the ore

specimen
specimens of copper ore

stamped
stamped ore

streak
streak of ore

stubborn
stubborn ore

sulphur
sulphur ore

swamp
swamp ore

uranium
uranium ore

yellow
yellow copper ore

zinc
zinc ore