Year 1999 Summary: Rocket Nozzles, Make your Own Potassium Nitrate, Low Power Radio and Fireworks, Purifying Chemicals by Recrystalization, Hazard Assessment at Unusual Shooting Sites (parts I-III), Testing Electric Matches, Spoolette Rockets, Hobby Electric Launcher, My First Girandola, Installing a Pressure Gauge on a Hydraulic Press and Experiments with Miniature Rockets.