At least 15 people have died and 13 others are missing after a dam collapse at a gold mine in Siberia. <br />'' <br />'' The dam, on the Seiba river in the region of Krasnoyarsk, burst after heavy rain today, flooding cabins where workers lived. <br />'' <br />'' Russia's Health Ministry said 14 miners were taken to hospital, including three with severe injuries. A criminal investigation has been opened over allegations the dam violated safety regulations.<br />'' <br />'' Russian President Vladimir Putin has ordered officials to provide assistance and investigate the reasons behind the accident, his spokesman has said.<br />'' <br />'' Several small cabins, where workers are thought to have lived, were swept away by the floodwaters, the Interfax news agency reported.<br />''