FOUNTAIN #3
PREPARATION (parts by weight):
| CHEMICAL | PERCENT/PARTS | AMOUNT |
| Potassium nitrate | 0.500 | |
Charcoal | 0.100 | |
| Sulfur | 0.150 | |
| Iron | 0.250 | |
Total | ||
Charcoal, sulfur, and potassium nitrate are ball milled and very fine. Iron is medium-coarse. After mixing (by diaper method), add an equal weight of coarse meal powder (about 1Fg to 2Fg equivalent), and mix it in, too.
