There are two basic types of iron ore - hematite (the more preferred) and magnetite, which can be processed into valuable metallic iron or steel. "The big deposits are fortunate for Australia.
The nature of the available ore also has a very significant influence on the choice for equipment suitable for the given company or mine. Regardless of the type, whether it is an Iron anGold ...
When the war rendered the importar tion of foreign ores difficult and expensive, our iron and steel industry had to rely more and more upon basic steel produced from the latter class of ore.