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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.
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