After several weeks of consistent growth, the US lumber prices fell quite considerably last week. On average, lumber prices fell by $5.   Framing lumber traded quietly at a limited-volume pace similar to the prior week. The lack of activity weighed on producers, who pressed more urgently to move production. Price trends were mixed, but downward pressure was clearly evident in some species, particularly Western and Eastern S-P-F. Prices of key random dimension and stud items posted deep double-digit drops. Weakness in these species drove a $5 drop in the Random Lengths Framing Lumber Composite ...