▁ 1 9 7 6 ▁Heritage ▁Days ▁Festival ▁begins ▁at ▁May f air ▁Park . ▁M utt art ▁Conserv atory ▁opened . ▁ 1 9 7 8 ▁ 1 9 7 8 ▁Commonwealth ▁Games . ▁Ed mont on ▁Light ▁Rail ▁Trans it ▁started . ▁Ed mont on ▁Sun ▁founded . ▁Commonwealth ▁Stadium ▁opened . ▁K ins men ▁Centre ▁opened . ▁ 1 9 7 9 ▁– ▁Ed mont on ▁O ilers ▁join ▁the ▁National ▁Hockey ▁League . ▁ 1 9 8 0 s ▁– ▁Although ▁the ▁National ▁Energy ▁Program ▁was ▁later ▁scra pped ▁by ▁the ▁federal ▁government , ▁the ▁collapse ▁of ▁world ▁oil ▁prices ▁in ▁ 1 9 8 6 ▁and ▁massive ▁government ▁cut back s ▁kept ▁the ▁city ▁from ▁making ▁a ▁full ▁economic ▁recovery ▁until ▁the ▁late ▁ 1 9 9 0 s . ▁ 1 9 8 0 ▁Ed mont on ▁Fol k ▁Music ▁Festival ▁launched . ▁The ▁Great ▁Div ide ▁water fall ▁flows ▁from ▁the ▁High ▁Level ▁Bridge ▁for ▁the ▁first ▁time . ▁ 1 9 8 1 ▁Heritage ▁Mall ▁opened ▁West ▁Ed mont on ▁Mall ▁opened . ▁ 1 9 8 2 ▁Ed mont on ▁Fr inge ▁Theatre ▁Festival ▁is ▁held ▁for ▁the ▁first ▁time . ▁A ▁large ▁explos ion ▁at ▁the ▁C IL ▁plant ▁in ▁Ed mont on ▁could ▁be ▁felt ▁up ▁to ▁ ▁away . ▁ 1 9 8 3 ▁ 1 9 8 3 ▁Summer ▁Univers ia de . ▁Hotel ▁Mac don ald ▁clos es ▁after ▁falling ▁into ▁desp air . ▁Man ul ife ▁Place ▁was