Exigencies on long-term safety proof - Waste use in underground mining

According to the German Mining Act (Bundesberggesetz) in agreement with the environmental legislation, underground waste utilization shall be implemented ecologically sound, with long-term safety, and was to require no subsequent measures. Long-term safety shall to guarantee that the threshold values of pollutants orientated at the requirements for human life are not exceeded in the biosphere. Various activities mainly of the industry were initiated to keep and to extend the acceptance of dumping waste underground. The latter is considered to be a major opportunity both for the environment and for the operators of potash and halite salt mines.