Local Government Act 1966

5 Section 7 of the Rating Act 1874 (which relates to the valuation of tin, lead and copper mines) shall have effect as if for the words " the gross value of the mine shall be taken to be the annual amount of the whole of the dues payable in respect thereof during the year ending on the thirty-first day of December preceding the date at which the valuation list is made " there were substituted the words " the gross value of the mine for the purposes of any rate period shall be taken to be the annual amount of the whole of the dues payable in respect of the mine during the year ending with 31st December falling between three and fifteen months before the beginning of that rate period " ; and the valuation officer may estimate that annual amount for the purposes of the preparation of a new valuation list falling to be signed before the end of that year.