Strike, wage raise - 1969Strike, for better safety - 1939Strike, diminished working hours - 1979Strike, diminished working hours - 1991Strike, diminished working hours - 1979Strike, wage raise - 2002Strike, against a worsening of the pension scheme - 2005Strike, - 1977Strike, wage raise - 2015Strike, wage raise - 2016demonstration at the factory gate, diminished working hours - 1978Strike, wage raise - 2019