As Ukraine tensions eased and metal prices firmed, the industrial metals and mining sector climbed to the top of the sector leader board on Thursday.FTSE 250 steelmaker Evraz was one of the biggest gainers, up 4% partially due to its strong Russian connections. The food and drug retailer sector was the leading faller on Thursday as Ocado continued its recent volatility, falling 2.5% just before close. Tesco and Sainsbury's were also slight fallers, down 0.9% and 0.1% on the day despite no company-specific news. Top performing sectors so far todayIndustrial Metals & Mining 910.09 +2.27%Mining 17,314.47 +1.87%Life Insurance 7,332.77 +1.62%Financial Services 8,094.02 +1.37%Forestry & Paper 11,848.49 +0.92%Bottom performing sectors so far todayFood & Drug Retailers 4,319.01 -0.77%Pharmaceuticals & Biotechnology 12,649.33 -0.65%Technology Hardware & Equipment 1,225.67 -0.64%Industrial Engineering 10,904.96 -0.58%Automobiles & Parts 9,338.23 -0.42%OH