In the service of industry
Aluminium has also significantly influenced the development of the region, thus contributing to the retreat of the Pekuakamiulnuatsh towards a progressively sedentary life style. This industry, proliferating at that time, had need of a large amount of energy in order to optimise the functioning of its plants.
In the region, it was the Alcan Company that established itself. About 1925, the company constructed a number of wooden dams in order to divert extra water towards the Péribonka River, with the aim of ensuring a more regular flow into the lake mainly during the winter period, for the hydroelectric power station located at Alma. The large energy needs of the company for aluminium manufacture meant that it drew its energy resources directly from the territories.
Thus the flooding provoked greatly influenced the life style of the Pekuakamiulnuatsh during their seasonal gatherings at Pointe-Bleue, since the landing zones as well as the portages had to be greatly modified on the community shoreline.