Two such cars found at the 3^rd level Southwest shaft station during the cleaning process of the mine preparation for the public tour. This type of car is still abundantly found on other levels of the Southwest mine. The two cars found during the tour renovation differs slightly than the cars on other levels of mine. They have a V-shaped tub that has been flatted near the top and one has had dumping handles added.. To dump the car, miner removes the pins on both sides and pushes on the opposite side car of the direction that you want to dump. The design of the car makes dumping full cars easy, but partially full cars take two persons.  Wet and sticky muck hangs in the cars and will need removed by the use of a blow pipe or beating the bottom of the car with a double jack to knock the muck loose.( Note: The dents in the bottom of the cars are from being repeatedly hit.) These cars require the use of chain to be attached to the track or to have some other means of keeping the cars from turning over when dumped like bumper boards. This car able to be hand trammed easily  or pulled by trains, In Southwest mine all the cars that exist do not have couplers indicating that they were hand trammed.  The letter designation is unclear at this time but is probably  a "C or D" car.