Freon was not the only culprit in ozone layer depletion. What is the name of the mastermind from the 1950s?

The first ozone hole in Antarctica was discovered in 1985. If we had had the atmospheric observation capabilities we have now, we might have discovered it 30 years ago. The existence of the ozone hole has been confirmed since the 1970s, and its main cause is chlorofluorocarbons (CFCs)...