Significados de red hematite en inglés

These latter works also ship about 40,000 tuns red hematite ore yearly.

But with pig iron produced from the red hematite ores, practically free from phosphorus, Bessemer's process was a surprising success.

This iron mine has yielded for several years past 1,000 tons of red hematite ore per month, and employed nearly 100 hands.

They are known as the Antwerp red hematites, and, being very easily smelted, are mixed with more refractory ores.