Strike, wage demands excluding wage raise - 1946Strike, state regulations regarding labour conditions - 1976Strike, for better safety - 1980Strike, wage demands excluding wage raise - 1981free transport, wage raise - 1981Lockout, because the workers had been on strike - 1914Strike, against a worsening of the pension scheme - 2004Strike, against the results of privatization - 2006Strike, against the results of privatization - 2006Strike, wage raise - 1914Strike, other demands - 1919Strike, wage raise - 1948Strike, against a wage cut - 1977