Here is a You Tube channel that I subscribe to. While it is not a saw mill, the shop is a working machine shop powered by a steam engine and a boiler on the premises.
https://youtu.be/y5a9jGNInLI You Tube has more than a few videos of old-time saw mills.
Between Vancouver and New Westminster there was a dozen or more lumber mills along both banks of the North Arm of the Fraser River. Sadly, they are all long gone. At one time the mills and the local lumber industry may have been the largest employer in this area. A man named Johnny lived three doors down from me and he worked the green chain all of his career. He retired at 65 after nearly 50 years and died in a fortnight.
The 1946-7, C69A Ford Flathead V8 that powers our 1940 Ford was driving a water fire pump at the Mac Millan-Bloedel sawmill at the south end of Boundary Road, on the Vancouver Side. I got the Ford Flathead V8 at an auction.
The original site of this mill is often used as a movie set now. Soon that area will be filled with condominiums.