Strong spring floods have shut down one refinery in Russia as they compromised a dam in the area forcing the evacuation of thousands, the BBC has reported, citing Russian government officials. Russian media report that the dam breach had sunk the old part of the city of Orsk and the level of water in the Ural River is gradually rising, threatening Orenburg, the administrative headquarters of the Orenburg region in southwestern Russia, near the border with Kazakhstan. Authorities have reported floods all along the length of the Ural,…