Sentence examples for ores has been from inspiring English sources
The smelting of sulphidic or sulphidic/oxidic ores has been long done in ancient time to produce metallic copper [21, 22].
ORES has been in the testing stages for a few months, and it's already seen success - now, Wikipedia is opening it up to everyone.
In recent years, the increasing commercial production of refractory complex ores has been urgent to develop special collectors for enhancing flotation separation efficiency of valuable minerals from these ores.
Rich polymetallic ores have been found in the Ohangaron (Akhangaran) field southeast of Tashkent.
"For about 70 years now, a great quantity of ore has been mined … It is no great surprise that the good ores have been exhausted, and that all have diminished".
The local high-grade hematite ores have been for the most part worked out except at great depth, but there are reserves that have a lower iron content.
Sierra Leone's mines, rich in diamonds and metal ores, had been plundered by rebels, and many of its most educated people had left.
Copper, bauxite, iron, and uranium ores have been reported, and, beginning in the early 2000s, concessions were granted to companies for gold and diamond prospecting.
Although China formerly was regarded as deficient in iron ores, huge quantities of varying grades of ores have been discovered that are widely distributed and often located close to coal supplies.
These ores have been reported to be cobaltite (CoAsS) and erythrite (Co3(AsO4 2·8H2O), which are As-bearing cobalt ores [7,14].
Various cobalt ores have been identified in the region, one being an arsenic-nickel cobalt ore known to have been used in glassmaking [19, 24: pp. 69 74].
