On June 29, 1978, Michigan’s new fireworks law, which banned fireworks bigger than paper caps and sparklers, was slated to take effect during the coming weekend. The law included a 24-hour grace period that allows people to turn over to police any leftover fireworks they might have hanging around.
Skyrockets, bottle rockets, Roman candles and Saturn launchers are out. Smoking snakes, smoke bombs and cone fountains were still in. The law, signed by Gov. Bill Millkin, created a 90-day, $100 penalty for possession.
Source: Detroit Free Press