For increase in stocks supporters of environment protection suggest to increase a share of recirculation and a reuse of not renewable mineral resources and to reduce unjustified losses of such resources. Recirculation, recycling and decrease in quantity of waste demands for the realization less power expenses and to a lesser extent destroy the soil and pollute water and air, than use of primary resources.
Nonconventional heavy oil, the rest of usual oil, and also got from oil-bearing slates and sand can increase oil reserves. But she is expensive, possesses low value of a pure exit of useful energy, demands for processing of a large amount of water and makes more harmful effects on environment, than usual oil.
More than one hundred nonflammable materials are extracted from crust now. Minerals are formed and change as a result of the processes happening during formation of terrestrial rocks for many millions of years. Use of a mineral resource includes some stages. The first of them is a detection of rather rich field. Then - extraction of a mineral by the organization of some form of its production. The third stage - processing of ore for removal of impurity and its transformation into the necessary chemical form. The last - use of a mineral for production of various products.