Comex copper futures ended marginally lower on Friday but London copper prices were steady on a weaker dollar but still recorded its biggest weekly price fall since March as investors took profits from a speculative rally to three-year highs. Copper futures for December delivery shed less than a cent to settle at $2.949 a pound on the Comex metals division of New York Mercantile Exchange. While, copper on the London Metal Exchange ended up 0.1 percent at $6,508 a metric ton.

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