I just unloaded a trailer of rock salt at work this morning. It was from a company called American Rock Salt out of New York. The driver told me that the entire packaging process is mechanized now. A machine fills and seals the bags. Arms and conveyors move the bags to the pallets. Robotic arms load the pallets(49 bags to a pallet). The pallet then moves to a machine that shrink wraps it and covers it and then moves it out to be stored. Finally a human running a forklift takes the pallet to the warehouse. They have to be quick. They turn out 1 pallet of rock salt every minute. Amazing what technology can do.