Shell have this week begun work on the Corrib Gas pipeline route, just days in advance of the expected An Bord Pleanála decision.
On Monday, Shell moved into the area of Aughoose, about a mile from the Bellanaboy refinery site, and put up fences, lights and began drilling operations in the area, despite having no planning permission to carry out any such works.
In September, Shell were found to be in contempt of a court order for entering onto Rossport Commonage and carrying out site investigations.