Ecological problems of development of tin ore resources in Primorie and Priamurie

Results from many years of investigations of the ecological state of environmental sites in Primorie and Priamurie are discussed. It is found that processing wastes of tin ore feed-stock have a negative influence on the ecosphere as a whole. It is found that the levels of ions of ammonium, arsenic, copper and other heavy metals in snow cover exceed maximum permissible concentration (MPC). The study revealed a significant accumulation of total and mobile forms of elements in soils and vegetation. Some recommendations and suggestions are made in order to cope with the ecological problems.

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