1 and 2, as well as the 'Big Eddy' generating plant, in a cascade system, where excess water power from upstream dams is utilized by the downstream ones.

[4] With the advent of railways in the Manitoulin-North Shore region, it became increasingly practical to develop resource extraction industries in the area for export.

With the outbreak of the First World War, the market for nickel grew dramatically and Mond began to step up production at its mine sites.

Nairn Falls was a convenient site, already located near the AER line and relatively close to the existing mining operations.

The powerhouse at the dam was the very first local telephone service subscriber in April 1917 and as a result was assigned a phone number of 1.

This was largely a renewal of the anti-German sentiment of the First World War, which brought suspicion and persecution onto ethnic German civilians living in Canada.

As a precaution, Inco hired four armed security guards, two full-time and two relief, who patrolled the Spanish River dam complexes.

[1] By 1952, Nairn Falls was powering operations at Garson mine, Lawson quarry, Creighton, and the Copper Cliff and Coniston smelters.