Part 30

=SUPER-RIPPITE= is a modification of this, which has passed the Rotherham Test and is on the Permitted List--

Date of Permit 29-8-14 Nitroglycerine 52 Collodion cotton 3 Potassium nitrate 14·5 Borax 22·5 Potassium chloride 8

Limit charge 18 oz. Power (swing of ballistic pendulum) 2·53”

=RIVALIT= is a German blasting explosive containing ammonium nitrate, vegetable meal, nitro-compounds, and may also contain up to 3 per cent. of blasting gelatine.

Rivalit P, which has been introduced recently, contains up to 10 per cent. of potassium perchlorate, and is practically the same as Astralit V.

Chlorat-Rivalit is an explosive of the Cheddite type, introduced in Germany during the War--

Potassium chlorate 88·5 Paraffin 11·5

=ROBURITE= is a coal-mine explosive of the Grisounite class. In Germany many different mixtures have been made, but in general they are within the following limits--

Ammonium nitrate 70 to 80 Potassium nitrate 5 ” 10 Trinitro-toluene 12 ” 15 Flour 6 Sodium chloride 5 to 6 Potassium permanganate 0·1 ” 0·5

but some are outside them.

The explosive has also been made in England by the Roburite Explosives Co., Ltd., now incorporated in Roburite and Ammonal, Ltd., who had the following on the old Permitted List--

No. 3 Ammonium nitrate 88 Dinitro-benzene 11 Chlor-naphthalene 1

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

=*RUBY POWDER.=--- A 42-grain bulk smokeless powder, for shot-guns, introduced in 1899 by Curtis’s and Harvey. The following analysis was given in “Arms and Explosives,” 1917--

Nitrocellulose, insoluble 46·6 ” soluble 4·0 Metallic nitrates 34·0 Nitro-compound 8·2 Starch 5·5 Moisture 1·7

It is an inexpensive powder made without solvents.

=RUSSELITE.=--A coal-mine explosive which was made by the Forcite Co. in Belgium. It was on the old British Permitted List--

Nitroglycerine 40·5 Collodion cotton 2·3 Potassium nitrate 24·5 Trinitro-toluene 5·5 Wood meal 4 Ammonium oxalate 23 Calcium carbonate 0·2