1. EUROSTAT. http://ec.europa.eu/eurostat [accessed 20 August 2018].
2. COM/2014/398 Communication From The Commission To The European Parliament, The Council, The European Economic And Social Committee And The Committee Of The Regions. Towards a circular economy: A zero waste programme for Europe http://ec.europa.eu/transparency/regdoc/rep/1/2014/EN/1-2014-398-EN-F1-1.Pdf [accessed 20 November 2018].
3. Overview of polish mining wastes with circular economy model and its comparison with other wastes;Woźniak;Sustainability,2018
4. Possibilities of exploitation of secondary deposits (post mining dumping grounds) as an example of changes in extractive industry;Gawor;Prace Komisji Geografii Przemysłu Polskiego Towarzystwa Geograficznego,2014
5. Recycling utilization patterns of coal mining waste in China;Haibin;Resour Conserv Recycl,2010