Introduction

Abstract

The importance of raw mineral resources in the modern world is constantly increasing. Oil, gas, and nuclear raw material, as sources of energy, are required in ever-increasing quantities; the utilization of aluminum, titanium, and alloy metals, molybdenum in particular, as well as of manganese, chromium, and nickel, is expanding (Kozlovsky 1982b). The intensification of agricultural production necessitates an increase in phosphate and potash consumption in mineral fertilizers. New branches of industry, such as radioelectronics, space technology, etc. cannot develop successfully without using rare metals. Thus the economic wealth of the countries of the world has come to depend increasingly on mineral resources, leading to a universal rise in production and consumption of raw minerals in the second half of the 20th century.

Keywords

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