Changes made to the Regulation respecting mineral substances, other than petroleum, natural gas and brine last summer affect restoration plans approved prior to August 22nd, 2013.  As regards (1) operators who engage in mining operations determined by regulation in respect of mineral substances listed in the regulations; (2) persons who operate concentration plants in respect of such substances; and (3) persons who engage in mining operations determined by regulation in respect of tailings, the reclamation bond must now be posted in three instalments (50%, 25%, 25%) over the course of three years beginning August 22nd, 2014 and the amount of the bond must be equal to the cost of implementing the restoration plan. As for holders of mining rights who engage in exploration work determined by regulation or who agree that such work be carried out on the land subject to their mining rights, the rules in effect until August 21st 2013 continue to apply until the restoration plan is revised.