Supply And Transport Of Sleepers For The Extension Of Sectional Tracks Up To A Useful Length Of 750 M In Stations On The Zaragoza-Tarragona Section. Stations In Lleida: Juneda And Raimat / Selgua, Marcén- Poleñino And Almudévar. Stations In Caspe: Chiprana, Nonaspe And Flix / Fuente De Ebro And La Puebla De Híjar (EXPIRED)