The mineral extractors have got off to a good start after moderately encouraging manufacturing data from China. China's official purchasing managers' index (PMI) rose to 50.3 in December from 49 in November; a value above 50 indicates an expansion in business activity.Anglo American is among those on the up, after it said it would resist an attempt by Chilean state-owned Codelco to exercise an option to buy a 49% stake in Anglo American Sur, a huge copper mining plant in Chile that Anglo has spent billions upgrading.With London playing catch-up with many European markets which notched up solid gains yesterday - a bank holiday in the UK - there are no sectors in the red so far this morning.Top performing sectors so far todayAutomobiles & Parts 4,465.71 +4.37%Industrial Metals & Mining 4,051.03 +4.32%Mining 20,251.10 +3.44%Construction & Materials 3,559.45 +2.32%Technology Hardware & Equipment 756.73 +2.13%Bottom performing sectors so far todayNone--jh