21. Any excess amount disbursed to perform work on all the lands that are subject to the claims or the licences to explore for surface mineral substances to be converted shall be, in the case of an application for conversion referred to in sections 83.2 and 83.6 of the Act, apportioned among all the claims converted into map designated claims in proportion to their area.
Notwithstanding the foregoing, the holder may require that the apportionment be established in whole or in part on the basis of the real location where the work was performed up to the excess amount disbursed for such work.