diamonds are seen as "messengers from the deep", assumed to bring included mantle material to the surface well preserved in a chemical and physical prison. an external memory aid can be a post it note reminding one to do laundry or a grocery list reminding one to buy detergent. flat wagons
 four-wheel wagons, both box vans and open trucks, including vehicles surviving from the fish trains
 tank wagons, used primarily for spraying weed killer on tracks. at 11:30 am, passengers had been told to put on life jackets, and fifteen minutes later, the captain gave the order to abandon ship. 