Tend machines that crush animal bones.
What does a Bone Crusher do?
Tends machine that crushes animal bones used in manufacturing animal glue: Starts bone crushing machine conveyor that carries bones into crushing machine. Pushes button to start second conveyor that carries crushed bones from machine into cooking tanks for further processing. May tend hydraulic press that extracts grease and glue from cooked bones and be designated Steam-Bone-Press Tender.