(a) What are the qualifications of the former head of Engineering at the Passenger Rail Agency of South Africa, Mr Daniel Mthimkhulu, (b) from which institutions were the specified qualifications received, (c) on what basis was he appointed in his former position, (d) how were his qualifications verified prior to his appointment, (e) why was he suspended, (f) what processes will be followed with the specified person now that he has resigned while on suspension, (g) what are the time frames in this regard and (h) who is currently fulfilling his function?