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5459 - TrinityRail
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Peckforton Light Railway: How I constructed a loading hopper
Covered Hopper Train Cars (22 Units - Approximately 632 metric tons
Patent US7080598 - Railway hopper car with longitudinal discharge
Patent US5657700 - Railroad hopper car with ballast distributing blades
Drawings from the Society’s archives and publications – The Santa Fe
Patent US7171907 - Drive system for a railway hopper car discharge gate