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Environmental Guidelines for the Direct Reduction Route to Steel Making
(1983)
The electric arc furnace and the development of the mini-steel mill, along with direct reduction, has enabled countries to install for themselves steel making capacities for 60 to 70% of the capital cost required for an ...
Environmental Guidelines for the Restoration and Rehabilitation of Land and Soils after Mining Activities - UNEP Environmental Management Guidelines No. 8
(1983)
These are general guidelines for the protection and reclamation of mining areas. They are applicable irrespective of global location and prevalent socio-economic relations.