Subject: Gunpowder Processing Lecture by Dr R C Farmer c1920
Description: TNT sulphite wash
Notes: TNT Queensferry. As in Tech Records p 91. Sulphiting. Melt TNT. Stir. Cool to crystallize at about 50 degrees add sulphite. Stir 30 minutes. Open discharge cock. Run sludge into box & pump to filter.
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