@techreport{dr2016post-mining, title = {Post-mining landscapes within the City of Johannesburg Metropolitan Municipality: Assessing the opportunity to create Stone paper from rock wastes (Builder’s rubble, mine tailings and mine dumps).} author = {Dr William H.L Stafford Natural Resources and the Environment Unit Council for Scientific and Industrial Research}, url = {http://ere.csir.co.za/wp-content/uploads/2018/04/stone-paper-report.pdf}, year = {2016} }