the sums which would have been payable under paragraph ( b) of subsection (3) of section 29 in circumstances such as are mentioned in paragraph ( c) of that subsection; or

the amount which would have taken the place of the net amount of any fine, rent or royalties under a mining lease, as mentioned in subsection (4)( a) of that section, if the payments made by the lessee under the lease had not been fixed at a reduced amount under section 17(3); or

the appropriate amount of any reduction in compensation under section 29 which falls to be made by virtue of subsection (5) of that section; or

the existence of good reasons such as are mentioned in section 31(3), where the Ministry has not accepted a late claim,