The Manganese Industry of the
Mineral issues The Manganese Industry of the ... metal. Manganese is essential in the production of iron and steel, and no adequate substitute has been found. Manganese ore, however, is only mined in large quantities ... iii Mining 17 1 Open pit 17 2 Underground 18 2 Beneficiation 19 Manganese ore production 20 3 Before the revolution 20