Wildcat strike halts output at France's biggest hydro-electric plant Strikers from France's hardline CGT union have halted output at the country's biggest hydro-electric plant, Grand'Maison in the Alps. A series of wildcat strikes have been held throughout the country today, ratcheting up pressure on the government before it presents the final version of its pension reform that has prompted France's biggest labour protest in decades. IMAGES AND SOUNDBITES