Since 1990, about three dozen mills have closed in western Montana, a list that will soon include Pyramid Mountain Lumber in Seeley Lake and Roseburg Forest Products in Missoula, both of which announced plans to shutter within a week of each other last month. …Paul McKenzie, vice president and general manager of F.H. Stoltze Land & Lumber Co. in Columbia Falls said in 2023, the company got about 70% of its wood from national forest land — the most it had gotten from that source in years — but that amount was going to be significantly less this year. …Stoltze is also looking for ways to expand its business. A few years ago, the company established a new branch called Stoltze Timber Systems, which produces pre-fabricated structures using cross-laminated timber. Such construction is appealing to a lumber mill like Stoltze because it allows it to use smaller trees that in the past had little use.