These trucks are over 100 years old and are constructed to a similar design to the coke wagons used in the English Midlands region during the 1800's. The trucks were used for the cartage of clay from the quarry to the clay bins, prior to crushing and molding into bricks. These came from Fritsch, Holzer & Company, Brickworks, Hawthorn, Victoria, Australia Historic - Industrial Narrow gauge Railway Fritsch, Holzer & Company Brickworks , Hawthorn, Victoria, Australia - Rolling stock Drop Bottom Clay Trucks - Square like clay truck that has a very deep bottom floor.drop bottom, clay trucks, 2'7.5" gauge, puffing billy, fritsch, holzer & company, brickworks