(a) The amount paid to mineral producing States as royalty during each of the last three years ;
(b) the latest rate of royalty per tonne on different minerals mineral-wise as on date;
(c) whether the Government proposes to confer the right of revising the rate of royalty on minerals to the concerned States;
(d) if so, the details thereof and if not, the reasons therefor;
(e) whether the Government proposes to link royalty paid on iron ore to market prices rather than a fixed rate as at present; and
(f) if so, the details thereof?