Detailed illustration of the industrial pet food manufacturing process in a 1950

Detailed illustration of the industrial pet food manufacturing process in a 1950s factory. The scene should depict a classic production line with period machinery: large grain mills, metal conveyor belts, and smoking industrial boilers. Workers, dressed in typical work attire from the decade, handle ingredients like canned meat and animal by-products. In the background, shelves are filled with cans and bags of dry food, featuring colorful, retro-style labels. The lighting is dim, reflecting mid-century industrial technology, with a visual style that captures the nostalgic and functional essence of the era.