99. A licensee may, with the authorization of the Minister, abandon his right in respect of all or part of the territory subject to his licence, provided(1) he applies therefor in writing;
(2) the residual area, in the case of partial abandonment, consists of one or several parcels of land forming a quadrilateral with an area of at least 2 square kilometres;
(3) he has complied with the other provisions of this Act and the regulations.
Partial abandonment does not reduce the work the licensee is required to perform in the year of abandonment.