In light of his department's statement in 2015 that it would be setting up more one-stop service centres for miners who need to claim compensation for injuries or illnesses contracted in the course of their work in mines, (a) what is the total number of centres that have been set up and in each case, (i) is each centre fully operational (ii) where is each centre situated (iii) what is the total number of queries that have been handled to date and (iv) what is the total number of queries that are still outstanding and (b) what is the total number of centres that are still being set up by his department?