Dunn Paper will close its Port Huron location Nov. 18. Ashley Carpenter, vice president of human resources for Dunn Paper, said the Port Huron plant currently has about 100 employees. Carpenter said the closure is due to “…ongoing challenges to generate positive cash flow in the face of adverse economic factors.” She said none of the six other Dunn Paper locations are being considered for closure. Dunn Paper has one other location in Michigan, in Menominee. The Port Huron mill started operation in 1924 …Economic Development Alliance of St. Clair County CEO Dan Casey said the closure didn’t come as a surprise as the paper industry has been facing challenges, including the closure of the Domtar paper mill last year. In August 2021, Domtar Corp. announced it would be closing its Port Huron mill at 1700 Washington Ave., eliminating about 200 jobs. That mill had been in operation for more than 130 years.