Part 16

In the United Kingdom this is “authorised” but not “permitted” for use in dangerous mines.

=FLOBERT= ammunition consists of small cartridges, like detonators, charged with a small quantity of mercury fulminate, and some antimony sulphide and potassium chlorate. It is used for target practice and shooting small birds.

=FOERDER SICHERHEITSSPRENGSTOFF.=--A German coal-mine explosive containing ammonium nitrate, not more than 4 per cent. of blasting gelatine, mono- and di-nitro-aromatic compounds, vegetable meal and neutral salts.

=FOERDIT.=--A German coal-mine explosive containing nitroglycerine gelatinised or ungelatinised, carbohydrates, glycerine, nitro-compounds, inorganic nitrates and sodium or potassium chloride.

Ammon-Foerdit is a similar mixture, except that it contains a larger percentage of ammonium nitrate and no other inorganic nitrates. The nitroglycerine is gelatinised, and there is a little diphenylamine. The following are examples of these two explosives--

Foerdit. Ammon-Foerdit. Nitroglycerine 25·5 3·8 Collodion cotton 1·5 0·2 Ammonium nitrate 37 85 Nitro-toluene 5 -- Dextrine or flour 4 4 Glycerine 3 2 Diphenylamine -- 1 Potassium chloride 24 4

Ammon-Foerdit F, which has been introduced recently, contains up to 10 per cent. of potassium perchlorate and is similar to Astralit V.

=FORCITE.=--A variety of gelatine dynamite or gelignite made in Belgium. It contains blasting gelatine 36 to 64 per cent., sodium or ammonium nitrate, wood meal, magnesia and sometimes bran.

An American explosive of the same name is a dynamite containing wood tar--

Nitroglycerine 49 Collodion cotton 1 Sodium nitrate 38 Sulphur 1·5 Wood tar 10 Wood pulp 0·5

=FORCITE ANTIGRISOUTEUSE 3.=--A Belgian coal-mine explosive of the Carbonite type--

Nitroglycerine 26 Potassium nitrate 33 Barium nitrate 1 Rye flour 38·5 Bran 1 Sodium carbonate 0·5

Charge limite 750g.

=FORTEX.=--A coal-mine explosive made by Explosives and Chemical Products, Ltd. The mixture, which was on the old Permitted List, was--

Ammonium nitrate 78·5 Tetryl 21·5

=NEW FORTEX.=--A modification of the above to pass the Rotherham Test--

Date of Permit 25-11-13

Ammonium nitrate 35 Potassium nitrate 33 Tetryl 12 Ammonium chloride 20

Limit charge 10 oz. Power (swing of ballistic pendulum) 2·61”

=FORT PITT MINE POWDER NO.= 1 is an American coal-mine powder on the Permissible List. It is a nitroglycerine explosive.

=FRACTORITE.=--A Belgian coal-mine explosive--

B. D.

Ammonium nitrate 75 Ammonium nitrate 75 Dinitro-naphthalene 2·8 Sodium nitrate 10 Ammonium oxalate 2·2 Nitroglycerine 4 Ammonium chloride 20 Ammonium oxalate 7 Flour 4

Charge limite 450 g. Charge limite 700 g.

=FRACTURITE.=--A coal-mine explosive formerly on the Permitted List, made by the British Explosives Syndicate, Ltd.--

Nitroglycerine 52·5 Collodion cotton 3·5 Potassium nitrate 23 Wood meal 6 Ammonium oxalate 15

=FUEL-ITE.=--There is a series of coal-mine explosives of this name on the American Permissible List. Nos. 1 and 2 are nitroglycerine explosives of the Carbonite type. No. 3 is an ammonium nitrate explosive.

=FUELLPULVER= (or =FP.=) is the name given by the Germans to mixtures of trinitro-toluene and ammonium nitrate used for filling shell. Fp. 60/40, for instance, is a mixture of 60 parts trinitro-toluene and 40 parts of ammonium nitrate, and is consequently the same as Amatol 40/60. Fp. without figures stands for trinitro-toluene.