307 
Fig. 3: Man caused impact. A shows the smoke plume of smelters near 
Sudbury (10-9-72), smelter smoke damage is illustrated by 
winter image B (14-2-74). A similar situation exists near 
Wawa C (3-8-73), D (12-1-74). The disturbance area near 
Flin Flon E (11-10-73), an old mining town, is less 
extensive. F shows a new mine near Leaf Rapids, Manitoba 
(25-4-74). G shows recent (1) and older (2) cutover areas 
in winter. H a new road with borrowpits (3) and clearing 
(4) for a new channel development along the Rat River, Manitoba.