15. The Société may, for the attainment of its objects and with the approval of the Government, acquire by expropriation any immoveable or other real right situated in the territory described in Schedule C, even an immoveable which, under a general law or special act, is not susceptible of expropriation, on the condition that the immoveable or other real right thus expropriated:(a) is adjacent to another immoveable already held by the Société; or
(b) is necessary for the installation of public services for the territory.