There has been vociferous local and national debate against them, with the anti-dams campaign, Patagonia sin Represas (Patagonia without Dams) emphasising irreversible social and environmental damage.
The Ospreys then survived without conceding any more points while Alun-Wyn Jones was in the sin-bin between the 26th and 36th minutes after committing a third technical offence of the game.
Bath scrum-half Michael Classens was sin-binned for a cynical offence at the breakdown and Banhan followed him five minutes later for tackling Murphy without the ball.