Till 1740, the smelting of iron ores in England was executed entirely with wood charcoal; and the ores employed were principally brown and red hematites.
Greater dimensions may, however, be given to those destined for the calcination of iron ores.
In the Pyrenees, the roasting of iron ores is executed in a circular furnace, so disposed that the fuel is contained and burned in a kind of interior oven, above which lie the pieces of ore to be calcined.
As to the wealth of iron ores, it has been said that the company owns about seven thousand acres in the valley and along the southern slopes of Cumberland Mountain.
Other indirect evidences are the pre-Cambrian limestones, iron ores, and graphite deposits, since such minerals and rocks have been formed in later times by the help of organisms.
Its presence in varying amounts in iron ores is a matter of importance, since it affects the quality of the iron obtainable from them.
It is a constituent of some silicates, and is frequently met with in very small quantities in iron ores.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "iron ores" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
