Metal and mining firms are among today's top gainers on China's plans to spend $156B on infrastructure and Glencore's raised buyout offer for Xstrata. Coal is enjoying a big day, with Alpha Natural (ANR +14%) the S&P's biggest advancer. Other coal (KOL +5.2%) names: CLF +11%, BTU +9.6%. Steel (SLX +5%) names: X +7.1%, AKS +9.1%. Also: FCX +6.9%, JOY +6.8%.