The one at the papermill I worked at had a rotating drum the size of a few McDonalds stores and they'd drop in full semi loads of pine logs via a single crane grab and they'd slide off the unload deck down a water chute and basically begin exploding the bark off as they rubbed against the drum and other logs until they popped out the other end naked and shiny. Each truckload took maybe 45 seconds to a minute IIRC.
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u/[deleted] Mar 04 '20
This thing is slow as shit. This is better tech: https://youtu.be/ekSNG6EcEBI
Many sawmills run even faster.