PNIOWIT.—A German blasting explosive containing ammonium nitrate, trinitro-toluene, wood meal and a small percentage of potassium perchlorate.
Nobel POLARITE is a blasting explosive made by Nobel’s Explosives Co., Ltd. It consists of potassium perchlorate, and nitroglycerine mixed with a nitro-compound and gelatinised with collodion cotton, and absorbed in wood meal.
Poudres [B], [J], [M], [S], [T]. See under respective letters.
PRAEPOSIT is a modified gunpowder—
| Potassium (or sodium) nitrate | 70 |
| Sulphur | 18 |
| Charcoal | 6 |
| Hipposin | 6 |
the last constituent being a fine powdery substance obtained from dried horse dung. It is slower than ordinary blasting powder and more expensive. It has a tendency to blow out, and opinions as to its value vary. Formerly it was supplied in the form of a fine powder, but it is now granulated or made into compressed cartridges.
*PRIMROSE SMOKELESS is an inexpensive 42-grain bulk powder for shot-guns made by the New Explosives Co.
PROGRESSIT was an explosive formerly used in Austrian coal mines—
| Ammonium nitrate | 94 | 89 |
| Aniline hydrochloride | 6 | 5 |
| Ammonium sulphate | — | 6 |
It was superseded in 1913 by Pannonit.