Whether, with reference to her reply to question 1173 on 19 May 2010, the clean-up operation of the sites in Welkom has been concluded; if not, why not; if so, (a) what was the total amount of medical waste, in tonnes, that was removed from each of these sites, (b) where was the removed medical waste (i) treated and (ii) disposed of and (c) what is the current status of legal proceedings against the persons allegedly responsible for dumping this waste?