https://digitalarchive.tpl.ca/internal/media/dispatcher/1820625/fullSlippery spot: Greenpeace pollution protesters Jamie Greager, 26, of Detroit, left, and John Willis, 23, of Toronto, keep a tight hold on their lines as they perch on a ledge above the Niagara Gorge8/31/1982TSPA_0012461F0Picture7552089194885