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1. 1 Profil du souterrain. 2 chandelier a cremalliere 3 profil du souterrain avec les ordonnes calculees 4 clou a tete percee 5...

2. All east portal

3. Arching at west end Hoosac Tunnel

4. Bird's eye view of tunnel, store, &c

5. Bird's-eye view of east portal

6. Bird's-eye view of east portal

7. Boring machine

8. Boston & Maine 2504

9. Central shaft

10. Central shaft at the time of fire, 1867, 583 feet deep

11. Central shaft buildings erected after fire in 1867.

12. Design for arch/entrance of Hoosac Tunnel

13. Design for arches/entrance of Hoosac Tunnel

14. Diagram of excavation and construction. Hoosac Tunnel, on the Troy and Greenfield R.R.

15. Diagrams of excavation and construction. Hoosac Tunnel, on the Troy and Greenfield R.R.

16. A dining saloon on wheels

17. East end ; west end ; east end

18. East end, miners going in

19. East end, miners going in

20. East end of Hoosac Tunnel