They had the equivalent of that in 1976 at the Diamond International stud mill in Passadumkeag, except IIRC it was fixed at the end of the log deck. Picked up limbed trees from a big pile and dropped them in front of the first set of 72" chop saws that cut them into the longest possible multiples of eight feet and sent them to a holding pen. Then they went through the Cambio rotary debarker that slipped the bark off at the cambium layer. Tree ends and bark waste went through a 250 hp hammer mill and then to big silos whence they were used to fire the kilns. Another holding pen. Then to the 60" chop saws that cut them to eight foot lengths and yet another holding pen. Then through a hole in the side of the building. Everything after that was continuous. On the way in they pushed aside a pair of rubber tires that set the width of a giant pair of bandsaws that cut off the first pair of slabs. Slabs and all other clean waste including rejects after the kiln went to 125 hp “salad slicer” type chippers and the chips were trucked down to Old Town to be made into facial tissue etc. The log was now tipped sideways and smaller circular saws made all the subsequent cuts as the various bits whizzed around the building. 72 hours in the kiln and then graded and bundled.
The whole thing was quite a machine, and of course astonishingly noisy. And all the operations outside on the log deck were controlled by pneumatic logic. The manager was all out for production and forced the kiln so they had a lot of rejects. According to my neighbor who was one of the graders he was always jumping down their throats for grading too strictly.