TuniieJiii.o- Throufrh the Canadian Rockies 



One of the inter- 

 sections of the 

 pioneer tunnel 

 with the main 

 tunnel. Horses 

 were used to 

 haul the muck 

 cars to the point 

 where they were 

 dumped into 

 railroad cars. 

 From this point 

 to the mouth of 

 the tunnel 

 standard-gage 

 compressed -air 

 locomotives 

 were employed 



A view of the 

 entrance to the 

 tunnel under 

 Mount McDon- 

 ald. It emerges 

 at a point in the 

 Bear Valley 

 about one thou- 

 sand feet be- 

 low the present 

 railroad route 



In the lower picture the mountain is 

 shown sliced away to reveal the pio- 

 neer and main tunnels, as well as the 

 laterals connecting the two. The ma 

 tenal excavated was hauled through 

 the pioneer tunnel and then through 

 the main tunnel as indicated by the 

 arrows in the diagram on the right 



55:1 



