The following has passed the Rotherham Test and is now on the Permitted List—
| No. 4 | |
| Date of Permit | 13-5-14 |
| Ammonium nitrate | 61 |
| Trinitro-toluene | 16 |
| Sodium chloride | 23 |
Limit charge | 18 oz. |
| Power (swing of ballistic pendulum) | 2·86” |
ROCKITE is an explosive made by Curtis’s and Harvey for quarry work, etc.
ROMPERIT.—A German blasting explosive containing ammonium nitrate, potassium nitrate, trinitro-toluene, flour and resin. It may also contain up to 4 per cent. of [blasting gelatine].
Wetter-Romperit contains also sodium chloride, ammonium chloride or magnesite, and is used in coal mines.
Gelatine-Romperit contains gelatinised nitroglycerine, glycerine, potato meal, etc., and nitrates, and may also contain aromatic nitro-compounds and alkali nitrates.
Romperit G, which has been introduced recently, contains up to 10 per cent. of potassium perchlorate, and is similar to [Astralit V].
ROSLIN GIANT BLASTING POWDER is a perchlorate explosive made by Curtis’s and Harvey.
*ROTTWEIL SMOKELESS POWDERS.—These were pushed energetically in England in 1913. They comprised a gelatinised rifle powder, and a 37-grain gelatinised dense shot-gun powder. Analyses were given in “Arms and Explosives,” 1917, p. 90—
| Shot-gun. | Rifle. | |
| Nitrocellulose, insoluble | 72·3 | 72·8 |
| ” soluble | 24·5 | 25·0 |
| Metallic nitrates | 0·7 | — |
| Camphor and diphenylamine | 1·0 | 1·0 |
| Moisture | 1·5 | 1·2 |