CRONITE is an American coal-mine explosive. There are two varieties on the Permissible List, Nos. 1 and 5, both of which are ammonium nitrate explosives.
*CRYSTAL is a smokeless shot-gun powder made by Curtis’s and Harvey. It is a non-solvent powder for cheap loading, and the charge is thirty-three grains.
C.S.P.2 (Chilworth Smokeless Powder, No. 2) is a modification of [Cordite], containing a little sodium bicarbonate as a stabiliser. It is stated to have been adopted by the Brazilian navy (see “Engineering” for August 18, 1911, p. 237) and other powers.
CUGNITE.—A French blasting explosive manufactured by the Société Française des Explosifs—
| Nitroglycerine | 27 |
| Nitrocotton | 0·7 |
| Ammonium nitrate | 30 |
| Sodium nitrate | 30 |
| Wood meal | 11 |
| Barium sulphate | 1·3 |
CURTISITE.—A coal-mine explosive of the [Grisounite] class made by Curtis’s and Harvey. It was formerly on the Permitted List—
| Ammonium nitrate | 88 |
| Trinitro-toluene | 8 |
| Mononitro-naphthalene | 4 |
SUPER-CURTISITE was a modification of the above to enable it to pass the Rotherham Test—
| Date of Permit | 7-4-14 |
| Ammonium nitrate | 38·5 |
| Potassium nitrate | 29·5 |
| Trinitro-toluene | 10 |
| Ammonium chloride | 22 |
Limit charge | 16 oz. |
| Power (swing of ballistic pendulum) | 2·71” |
The permit has been repealed.