(a) the royalties being given on different grades of coal at present;
(b) whether there are differences of opinion between the Union
Government and the State Governments over the issue of revision in
the royalty for coal;
(c) if so, the main objections raised by the State Governments
in this regard;
(d) the reaction of the Union Government thereto;
(e) whether the Government proposes to amend the relevant statutes
which prevent the Union and State Governments from increasing royalty
more than once in three years; and
(f) if so, the details thereof?