The base metals were mixed on Tuesday. Copper fell below $2.80 in the pre-dawn hours, but then righted itself, managing to claw its way back into positive territory at $2.9036/lb., up better than a penny and a half. Nickel dropped below $7 early, rallied back into the mid-morning, but then sagged again to close at $6.9642/lb., down more than 24 cents.

The base metals were mixed on Tuesday. Copper pushed higher, reaching $3.22 in the pre-dawn hours, but then toppled through the New York day, just coming off its intraday lows to finish at $3.1307/lb., down more than 4¾ cents.

The base metals were mixed on Monday. Copper was off in the pre-dawn hours but rallied back during the New York session yesterday, to finish little changed at $3.6665/lb., down just over a tenth of a cent.