LME nickel could retrace to next technical support at $35,000/ton following tentative settlement in Xstrata's (XTA.LN) labor contract talks (ratification vote due later in global day), says Singapore-based trader; "we're not sure if nickel could go lower than that. Stocks are so low that it's a risky game." LME 3-month nickel unchanged since LME PM kerb, at $36,825/ton.