Economic Observation Network LME metal futures closed with mixed gains and losses. Lunan Aluminum closed down 0.05% at $3137.5; London copper closed down 0.63% at $13251; Lunni rose 0.86% to close at $16415; London lead closed up 0.29% at $1893; Luncheon closed down 1.60% at $52150; Lunzi closed down 0.92% at $3538.