(1) When the table of revenue-rates for any area has been finally
published, the rates specified therein shall remain in force for a period of thirty years.
(2) Notwithstanding anything contained in sub-section (1),--
(a) revenue-rates may be altered or revised in any year after the expiry of every ten years from the date on which the table of revenue-rates was introduced, in such manner and to such extent as may be prescribed;
(b) when the circumstances of a local area are such that a fresh determination of the revenue-rates is in the opinion of the Administrator inexpedient, he may extend the term of settlement by such further period as he may think necessary.
(2) Notwithstanding anything contained in sub-section (1),--
(a) revenue-rates may be altered or revised in any year after the expiry of every ten years from the date on which the table of revenue-rates was introduced, in such manner and to such extent as may be prescribed;
(b) when the circumstances of a local area are such that a fresh determination of the revenue-rates is in the opinion of the Administrator inexpedient, he may extend the term of settlement by such further period as he may think necessary.