Strong gains from steel producer Evraz helped the industrial metals and mining sector higher on Monday, while utility stocks fell.Evraz was up nearly 12% at 80.42p in afternoon trade as it continued its recent volatile swings.The stock fell to an all-time closing low of 54.4p on March 14th on the back of heightened tensions between Russia and Ukraine, where a large chunk of its operations are based. However, with the situation having not escalated any further since then, bargain hunters have pushed the stock up over 40% over the past two weeks.Others in the sector including nickel miner Talvivaara and iron ore group Ferrexpo were also on the rise.In contrast, electricity, gas and water stocks were among the worst performers in the aftermath of an Ofgem report last week which called for a full-scale competition investigation into the energy industry that could see the 'big six' suppliers broken up.The regulator said the energy firms' bumper profits and recent price rises had intensified public distrust and it had to refer the industry to the Competition and Markets Authority (CMA) "to clear the air".SSE was among the worst performers in London today.Top performing sectors so far todayIndustrial Metals & Mining 1,072.65 +8.35%Forestry & Paper 11,363.78 +2.83%Technology Hardware & Equipment 1,212.21 +2.34%Fixed Line Telecommunications 4,437.29 +1.58%Media 6,080.26 +1.35%Bottom performing sectors so far todayElectricity 9,729.28 -1.68%Pharmaceuticals & Biotechnology 12,060.19 -1.09%Health Care Equipment & Services 5,202.03 -0.55%Gas, Water & Multiutilities 5,846.95 -0.39%Food & Drug Retailers 3,938.05 -0.30%BC