(1)With reference to his reply to question 287 on 14 March 2016, (a) what was (i) his specific role and (ii) the extent of his involvement in discussions that were held in Switzerland around the sale of the Optimum mine by Glencore to Oakbay, (b) which persons were involved and (c) who requested his involvement in the specified discussions;
(2) who was the official of the department who accompanied him on the visit?