Painting by Fred Finley.
The caption read, Scene from the North Plant Forge Department, Atlas Steels Limited, Welland, Canada, showing a 12,000 lb pneumatic hammer and a 1000 ton press.
Date is unknown. The plant is still very much in business, now called Valbruna.
Apologies for the image quality, I photographed this print, hence the the glare in a few spots.