ACKERMAN, Mississippi — Southeastern Timber Products announced this week it is investing $123.4 million to expand its operations in Ackerman, which could create as many as 40 jobs. Southeastern Timber Products is a family-owned-and-operated manufacturer of southern yellow pine lumber, timber and decking products. The company is expanding its Ackerman sawmill to increase production capacity from 120 million board feet per year to 300 million board feet per year. To facilitate the project, Southeastern Timber Products will install a new sawmill line, new dry kilns and storage facilities. Southeastern Timber Products has a joint venture partnership with Tolko Industries, a company based in Vernon, British Columbia, Canada. One of the largest Canadian investments in Mississippi, Tolko has embarked on what will ultimately be a $150 million investment in the STP lumber mill that was announced in 2022.