LONDON (AFP) - Oil prices slid Thursday on rising weekly US jobless claims and downbeat Chinese manufacturing data, while traders also mulled the impact of central banks action to boost liquidity. New Yorks main contract, light sweet crude for delivery in January, dropped $1.19 to $99.17 a barrel. Brent North Sea crude for January sank $2.16 to $108.36 in late London trade. New claims for US unemployment insurance rose slightly for the second straight week, the government reported Thursday, a day ahead of the November jobs market data. The number of people registering for jobless benefits rose to 402,000 in the week ending November 26, the Labor Department said. The department revised up the prior weeks number to 396,000 claims. Most analysts expected claims to fall last week amid an easing trend in the weekly data. Crude futures were also pulled lower by official data showing that Chinese manufacturing activity contracting in November for the first time in 33 months. Chinas purchasing managers index (PMI) fell to 49 last month, down 1.4 points from October, marking the first contraction since February 2009, the China Federation of Logistics and Purchasing said in a statement. A reading above 50 indicates the sector is expanding while a reading below 50 suggests a contraction. Both data releases are important for the crude market because the United States is the worlds biggest consumer of oil, while China is the largest consumer of energy. Oil had risen in earlier Asian deals after central banks in the eurozone, Canada, Britain, Japan, the US and Switzerland on Wednesday cut the cost of providing US dollars to banks to prop up the global financial system. The dramatic move sparked a global equities rally Wednesday as traders welcomed the latest effort to turn back the runaway eurozone crisis.