Western Australian Consolidated Acts A category B past act
that is wholly or partly inconsistent with the continued existence, enjoyment
or exercise of the native title rights and interests concerned extinguishes
the native title to the extent of the inconsistency.
Note: In the NTA
“category B past act” is defined in section 230 (with
exceptions and qualifications) as leasehold grants, other than leases that are
category A past acts and mining leases.