LME 3-month copper falling as base metals sentiment dented by losses in U.S., Asia stock markets, says Maike Futures' Shen Haihua; with U.S. subprime mortgage market woes increasing risk-aversion, "we are in a jittery period, sort of what we saw last May and June." Pegs support for copper at $6,000, though notes risk of that being broken if equity markets continue to slide; LME 3-month contract down $55 vs London PM kerb at $6,165/ton after falling $40 overnight.