LA LÍNEA (Agencies) Municipal workers demanding back wages staged the first of their planned 'indefinite' one hour strikes by closing off the access to Gibraltar. Although they began at the Palacio de Congresos convention centre, they soon marched to wards the border where they were greeted by a cordon of National Police that stopped the marchers from reaching the Customs area. However, the protesters did eventually get around the cordon and went into the customs area where vehicles come out of Gibraltar. The entrance and exit to and from the Rock was closed off for vehicles during the best part of an hour. One hour strikes and protests are planned for every day for the foreseeable future.