This case study research represents a forest industry where continuous productivity improvements in process automation are at the core of competitive production and safety operations. Metsä Group stands for the Finnish forestry industry, and the case study focused on opportunities and barriers of 5G to improve productivity in modern bioproduct mill operations. A key question in applying 5G is how to improve the efficiency of bioproduct mill operations in production, maintenance, and safety. The forestry industry is using 5G to connect and control robots and other machinery in real time, enabling more efficient and productive operations. Three use cases are studied: (1) automated guided vehicles (AGVs) for process automation, (2) On-demand site monitoring, and (3) digital maintenance support. New opportunities and barriers for implementing industrial 5G are analyzed in detail.