railway application

Can anyone tell me more about Jacked box tunnel in civil engineering?
Information on the method and the Applications elevation of the tunnel. Used on roads and live tracks.
I work for a dealer in Civil Engineering and we provide these items to different contractors, the theme is called "channel". The following link will take you to one of the suppliers of the product and should be explanetory itself.
eyevis large screen system in railway application
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NEW Application of the Credit Valley Railway for Right $10.16 |
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NSW GOVERNMENT RAILWAYS OLD DRIVERS PASS APPLICATION $17.74 |
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NSW RAILWAYS OLD DRIVERS PASS APPLICATION $17.74 |
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NEW The Application of Electricity to Railway Working - $20.48 |
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NEW The Application of Electricity to Railway Working - $21.13 |
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The Application of Electricity to Railway Working NEW $27.52 |
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NEW The Application of Electricity to Railway Working - $37.73 |
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The Application of Electricity to Railway Working NEW $38.44 |
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1849 The Application of Iron to RAILWAY STRUCTURES Eaton Hodgkinson HMSO report $110.62 |
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Vehicle-Bridge Interaction Dynamics: With Applications To High-Speed Railways… $180.47 |