A strike will shut down Norway's Mongstad terminal and refinery unless a new central wage contract is sealed between union and management officials, a spokesman for state-owned Statoil said. Arbitration has begun in stalled wage talks between the YS skilled workers' central union and the Norwegian Industry Federation (NHO). 'A conflict would close down the Mongstad refinery and terminal,' the spokesman said. 'YS has served noticed that 280 member workers at Mongstad would go on strike. Those on strike would be everything from office staff to engineers.' He said offshore platforms Statfjord, Gullfaks, Troll and Heidrun were regularly using the Mongstad crude terminal for unloading and loading on to other tankers for export.