STUDY OF THE CHANGES IN HARD COALS OF DIFFERENT TYPES IN THE ORGANISM IN CONNECTION WITH THE PROBLEM OF ANTHRACOSIS.

In the reported experiments the changes in the elementary composition, the content of active acid groups, the PMCs, and the IR spectra of hard coals in the organism of white rats have been investigated. All coals causing a pathological change undergo considerable oxidative-hydrolytic transformations, which are particularly intensive in the initial period. Farther-reaching changes are undergone by the more highly metamorphosed coals and coals with a high content of fusinite, which are more anthracosis-hazardous, and this characteristically distinguishes oxidation in the organism from oxidation in the coal beds and under laboratory conditions.