In Schedule 7 to the principal Act (claim for allowance of certain exploration expenditure etc.) at the end of the Table set out in paragraph 1(3) (which applies the provisions of Schedule 5 specified in the first column of the Table with the modifications specified in the second column) there shall be added—

“9	In sub-paragraph (2) omit paragraphs (b) and (c), in sub-paragraph (8) for the reference to all or any of the participators substitute a reference to the participator by whom the claim is made and in sub-paragraph (11) for “after 15th March 1983” substitute “ on or after 17th March 1987 ”.”