75. The holder of a group of contiguous claims the total area of which does not exceed four hundred and eighty hectares may concentrate his work on only a portion of such area and count it as required work with respect to any claim in the group.
If he renounces a portion of his claims, the sum expended as required work on the claims renounced shall be applicable with respect to the claims which he retains up to a maximum value of five subsequent renewals.
1965 (1st sess.), c. 34, s. 78; 1970, c. 27, s. 18; 1977, c. 60, s. 76.