The base metals all had a rare close in positive territory on Thursday. Copper bottomed during the pre-dawn hours, then forged a not unbroken but steadily higher trail through the day, finishing at its intraday high of $1.6223/lb., up 3½ cents.

The base metals were all off to the races on Wednesday. Copper blasted back over the $2 mark, rising from the pre-dawn hours to past noon before easing a bit and finishing at $2.0678/lb., up 14¾ cents. Nickel followed a similar path, cresting above $6 before pulling back to close at $5.8559/lb., up 61¼ cents.