A professional who performs any combination of following duties in preparing logs for cutting into lumber and storing cut lumber in sawmill. Responsibilities include:

• Unloads logs from trucks or cars.
• Rolls logs onto sawmill deck.
• Examines logs for defects, such as embedded pieces of iron or stone, decayed wood from splits, and marks defects for removal by other workers.
• Rolls logs from deck onto log or carriage.
• Rides log carriage of head saw and adjusts position of logs on carriage to cut planks of required thickness.
• Sorts and guides planks emerging from saw onto roller tables or conveyors for trimming edges.
• Straightens lumber on moving conveyors.
• Straightens edges of rough lumber, using saw.
• Operates and maintains donkey engines.
• Sharpens and adjusts teeth of woodworking saws.
• Tends fires in donkey engine.
• May relieve designated workers engaged in preparing or cutting logs into lumber and be designated sawmill-relief worker.