a large industrial waste tub grinder is mounted onto a lift or support frame that has a connection for a hook from a hoist on a truck so that the lift or support frame can be placed onto the truck and offloaded from the truck utilizing a conventional hook hoist . the lift or support frame supports the tub grinder on the ground surface , for in place use , the lift or support frame carries stabilizers for insuring that the lift or support frame provides a stable mounting for the tub grinder .