Rapido Trains 172004A HO Scale Procor 3000cuft Aluminum Hopper "Handrail & Worldmark" UNPX Car #4 Auto Reverser - DCC The development of the hopper

The development of the hopper car went along with the development of automated handling of such commodities

Late sub-base doors with lift-off hinges

where it has been restored to its as-built appearance

Kids play out stories that depict real life in a fun and imaginative way with feature-rich buildings

Rapido Trains 172004A HO Scale Procor 3000cuft Aluminum Hopper "Handrail & Worldmark" UNPX Car #4 Auto Reverser - DCC The development of the hopperRapido Trains 72004A HO Scale Procor 3000 cuft Aluminum Hopper "Handrail & Worldmark" UNPX Car #4 In the early 1980s sodium chlorate began to replace chlorine as a bleaching agent in the paper making process. Historically, sodium chlorate had been transported in solution form in tank cars. With significant increase in demand, a more efficient delivery method was needed. Transportation in crystal form by covered hopper car was a natural solution.