1996Corrib gas field discovery, 80km off the Mayo coast, confirmed by Enterprise Energy Ireland
October 2000Bord Gáis announces a gas pipeline from Mayo to Galway
November 2000Enterprise Energy Ireland applies for planning permission for a gas processing plant at Ballinaboy
April 2002Minister for the Marine Frank Fahey approves construction of the pipeline, exempt from planning
May 2002Shell takes over Enterprise Energy Ireland
April 2003An Bord Pleanála turns down application for onshore terminal at Ballinaboy
October 2004New planning application for Corrib onshore terminal given final approval by planning board
June 2005Residents' concerns over first proposed onshore pipeline route lead to jailing of Rossport Five for 94 days
July 2005Minister for the marine Noel Dempsey directs Shell to dismantle an illegal 3km section of onshore pipeline
July 2006Mediation fails to resolve dispute, but report recommends pipeline route be modified to take it away from houses
November 2007Restoration of special area of conservation ordered at Glengad after unauthorised drilling
February 2009Shell seeks permission for revised pipeline route, avoiding houses in Rossport
May 2009An Bord Pleanála hearing on pipeline opens
November 2009An Bord Pleanála deems half of the new route unacceptable due to proximity to housing, but gives approval if alterations made
May 2010Third route under Sruwaddacon estuary applied for by Corrib gas partners
August 2010An Bord Pleanála resumes oral hearing into pipeline
December 2010Pobal Chill Chomáin appeals unsuccessfully to Bord Pleanála to re-open the oral hearing, due to a disparity in information given by the Corrib gas developers for a separate foreshore licence application for the third pipeline route
January 2011An Bord Pleanála approves third pipeline route and compulsory acquisition orders. Foreshore licence and Gas Act section 40 approval still required, along with application from Environmental Protection Agency for revised emissions licence