Zinc, used to galvanise steel, soared to a nine-year high on Monday and lead hit a five-year peak due to more infrastructure investment in China.
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Oxford Economics commodities analyst Dan Smith told Hot Copper that on the supply side in zinc the biggest concern was that the cutbacks that have been implemented by the likes of Glencore will come back if prices go too high.
London Metal Exchange zinc CMZN3 surged more than 5 percent to $2,985 a tonne, its highest since October 2007.
Zinc has surged nearly 80 percent this year on fears that closures and suspensions of major mines will lead to shortages.
Copper CMCU3 also rose nearly 3 percent to a high of $6,045.50, its highest in just over a year.