London trading worsened as Friday afternoon as after figures revealed more half a million jobs were cut in the US in November.
The announcement added to falls among mining stocks, which are suffering from rapidly falling copper prices, and the FTSE100 index tumbled 3.03% to 4,037.42 by late-afternoon.
Lonmin shares dropped 18.21% to 539p as metal prices fell for a seventh consecutive day, followed by rivals Xstrata and BHP Billiton, which lost 14.77% and 9.76% respectively.
Legal & General saw the biggest gains, adding 5.3% to 73.5p, while GlaxoSmithKline shares rose 2.09%. BT Group's shares climbed 2.92% after a court decided the firm could increase the price it charges rivals to use its network.
US stocks dived as Wall Street opened. Investor confidence was damaged by a report showing 533,000 jobs were lost in November, the worst figures for 35 years.
The blue chip Dow Jones index dropped 2.16% to 8,195.04 by mid-morning.
Alcoa shares were hit by the falling price of raw materials, down 6.85% to $7.51, while Boeing slid 6.84% and General Motors lost 4.63%.
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