Today across the world there are huge areas that are occupied by badlands left after
intensive mining. Breeding dumps, sludge dumps, places of storage of ash and slag often represent a
biological desert, which is difficult to remediate. For example, such places are sulfur rock dumps of
mines in Donbas as a result of insufficient mineral nutrition and high acidity with sulfur
concentration. Such zones show a low rate of self-growth and gardening. Mining wastes that
accumulated for many years contain toxic components that are priority sources of environmental
pollution
