What is "copper ores"

Usage examples of "copper ores".

It also grew out of thousands of years of development of simple furnaces to make pottery, and then to extract copper ores and work copper alloys (bronzes) that do not require as high temperatures as does iron.

Surrounded by plains exuberant with copper ores, he could at the very least expect the water to have a sharp tang.

And the metal, found now every time they smelted certain bluish copper ores, became part of their armoury.

Others carried sulfur, lead, and copper ores, which would be transferred to the appropriate refineries.

Greens can be obtained from a variety of sources, including earths, boiled rotten wood, copper ores and pond algae.

Greens can be obtained from a variety of sources, in- earths, boiled rotten wood, copper ores and pond algae.

But in the past few days he had seen at least three areas where iron and copper ores lay open and available.

To the right a pale green moon rich with copper ores was sliding past.