(1) (a) When will the feasibility study into long-term solutions to acid mine drainage in the Witwatersrand be concluded, (b) which entity is conducting the study, (c) what is the estimated cost of the feasibility study and (d) when does she anticipate that tenders for implementation of the long-term solution will be advertised and awarded; (2) whether proposals for implementing long-term solutions are being accepted whilst the feasibility study is still underway; if not, what is the position in this regard; if so, what are the relevant details?