Persistent upward movement in US lumber prices left many items approaching their highs for the year in the fourth quarter. The current supply-driven run has pushed the Random Lengths Framing Lumber Composite Price to its fourth consecutive weekly increase.    The front month in lumber futures continued to trade at a slight premium to the physical market, but the January contract opened a sizable spread with cash. The roll to January was a prime feature for the week, with volume and open interest in that contract nearing par with November.    Mills in ...