Stock index futures signal steady open

(Reuters) Stock index futures pointed to a steady open on Wall Street on Thursday, with futures for the S&P 500 flat, Dow Jones futures up 0.2 percent and Nasdaq 100 futures up 0.1 percent at 0936 GMT. * European stocks were mostly unchanged in morning trade, while the euro fell to a 10-year low against the yen and its lowest in nearly a year versus the dollar, with investors nervous ahead of an Italian bond sale. * Fertilizer producer Mosaic Co said on Wednesday it will cut production of phosphate, a key nutrient used for crop production, because prices have fallen to unsustainable levels. ...