Abstract
Normal 0 21 false false false PL X-NONE X-NONE Polish coal mining industry generates approximately 30 million Mg of mining wastes per year, which represents the largest amount of industrial waste in Poland. This results in the disposal of a huge volume of wastes at waste dumps. The coal mining waste dumps are spread within the area of over 4,000 ha in more than 220 dumping sites, where over 760 million Mg of wastes from hard coal mining have been disposed.One of the most recent problems in Poland is the recovery of coal from mining waste. There is a possibility and necessity to recover coal from mining waste dumps, which should be linked with appropriate legal regulations. In this paper, distribution and dimensions of coal mining waste dumps in the Upper Silesian Coal Basin and the Lublin Coal Basin are analyzed. Selected problems of negative environmental impacts of coal mining wastes – that may be reduced by the recovery of coal – are presented. Legal regulations referring to the mining waste management are analyzed. Some examples of a successful recovery of coal mining dumps as well as economic feasibility studies are given. The analysis of potential objects, which are the most valuable in terms of recovery processes, is presented. Coal mining waste dumps may be considered as important secondary deposits. Feasibility studies and past experiences in the coal recovery show a need for new recovery sites. Sustainable coal recovery is not only economically but also ecologically justified. The re-using and managing of reclaimed dumping sites for local communities is also of importance.
Highlights
In Polish coal industry over 220 post-mining waste dumps are spread over an area of more than 4,000 ha
The amount of over 760 million Mg of wastes from hard coal mining is disposed in the coal mining waste dumps
The environmental impacts in question may be reduced by the recovery of coal from coal mining waste dumps
Summary
In Polish coal industry over 220 post-mining waste dumps are spread over an area of more than 4,000 ha. It is estimated that for each 1 Mg of coal produced, there is 0.4–0.5 Mg of waste material (Szczepańska & Twardowska 1999). This material is deposited in the coal mining dumps. 220 coal mining waste dumps, covering over 4,000 ha. The largest dumps cover an area of over 250 ha (e.g. the Central Coal Mining Dump in Knurów).
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