In a much-anticipated announcement, Roseburg Forest Products revealed in last week its plan to invest $700 million during the next four years to upgrade and expand its manufacturing operations in southern Oregon, including the construction of a MDF facility in Dillard, current site of multiple operations and where the company was founded nearly 90 years ago. The total investment package includes the creation of two new manufacturing plants, and technological improvements and upgrades at existing plants in rural Douglas and Coos counties…