ABSTRACT
As has already been indicated, secondary resources, waste and re-mining of fields gained greater and greater importance in industrial production at the end of the last century and, especially, at the beginning of this century. In the FSU the distorted economy brought about an enormous reserve of secondary resources for a number of reasons: non-complex use of raw materials, lack of investments, neglect of ecology, low quality and short life of equipment, and so on. We must introduce a notion of technogenic raw materials, alongside geogenic deposits and ores which are a complex of natural minerals. This notion becomes increasingly important for the industry of the industrialized countries.
