#12 "...In August 1979, the then-President of the National Hockey League (NHL), John Ziegler, announced that protective helmets would become mandatory for incoming players in the NHL. "The introduction of the helmet rule will be an additional safety factor," he said. The rule allowed players who signed professional contracts prior to June 1, 1979, who were already not wearing helmets to continue to do so for the rest of their careers provided a liability waiver was signed, if they so desired..."
#12 "...In August 1979, the then-President of the National Hockey League (NHL), John Ziegler, announced that protective helmets would become mandatory for incoming players in the NHL. "The introduction of the helmet rule will be an additional safety factor," he said. The rule allowed players who signed professional contracts prior to June 1, 1979, who were already not wearing helmets to continue to do so for the rest of their careers provided a liability waiver was signed, if they so desired..."
en.m.wikipedia.org/wiki/Charon
Iz... smh