Western SPF (spruce, pine, fir) lumber prices rose to a four-digit close for the first time on Tuesday, reaching $1,000 US per thousand board feet (MBF). "The trade magazine pointed to a moderation in sales pace due to cold weather, but prices continued to trend higher," said  CIBC analyst Hamir Patel, citing market watcher Random Lengths.  "Mills also had difficulty shipping orders given the snow and cold temperatures, while heavy rain hampered logging in some regions."  The North American composite lumber price rose about one per cent to an all-time high ...