A recovery in the share price of BP has given the oil and gas sector a lift.The reports are still not good, but today's rise comes after sharp falls earlier in the week.The amount of oil spilling out of the leak into the Gulf of Mexico may be more than double original estimates according to the latest reports from the US body monitoring the spill.The US Geological Survey now suggests 25,000 to 30,000 barrels daily may have been leaking ever since the Deepwater Horizon rig blew up on 20 April, killing eleven people and starting the spillage.The industrial metals and mining sector is also performing well, with Talvivaara Mining a top performer.The nickel and zinc miner has got its second production line up and running at its metal recovery plant.Top performing sectors so far todayIndustrial Metals & Mining 5,342.24 +4.23%Oil & Gas Producers 6,874.28 +3.16%Insurance (non-life) 1,390.31 +3.04%Fixed Line Telecommunications 1,943.16 +2.09%Forestry & Paper 4,387.17 +1.72%Bottom performing sectors so far todayAerospace and Defence 3,201.94 -0.86%Mining 20,647.29 -0.80%Beverages 8,538.94 -0.43%Food & Drug Retailers 4,528.92 -0.38%Health Care Equipment & Services 3,524.59 -0.37%