Talvivaara Mining Co, the London-listed Finnish nickel miner, plunged to a record in London trading after another wastewater leak was detected at its only mining site. Talvivaara dropped 18 percent to 13.50 pence at 10:19 a.m. in London, the lowest since it first sold shares to the public in May 2007. Trading volume exceeded 3.6 million shares, almost three times the three-month daily average.
See http://www.minesandcommunities.org/article.php?a=12232.