National Geographic : 1956 Sep
394 Aerial Tramway and Railroad Slash a Giant Figure 7 on Mount DuBose's Wooded Face Kemano powerhouse lies deep inside the mountain (page 379). To help build it, steel cables hoisted men and machinery half a mile up the slope. A rail line to the powerhouse tunnel completes the head of the figure 7. Far below, a canal discharges water from the generators past the main construction camp and into Kemano River.