66.52 La Commission peut, sur demande, modifier toute décision concernant les redevances visées au paragraphe 68(3), aux articles 68.1 ou 70.15 ou aux paragraphes 70.2(2), 70.6(1), 73(1) ou 83(8), ainsi que les modalités y afférentes, en cas d’évolution importante, selon son appréciation, des circonstances depuis ces décisions.
66.52 A decision of the Board respecting royalties or their related terms and conditions that is made under subsection 68(3), sections 68.1 or 70.15 or or subsections 70.2(2), 70.6(1), 73(1) or 83(8) may, on application, be varied by the Board if, in its opinion, there has been a material change in circumstances since the decision was made.