Part 37

=WALSRODE SICHERHEITS-SPRENGSTOFF= is a German coal-mine explosive containing ammonium nitrate, trinitro-toluene, flour, and a little guncotton and sometimes sodium chloride.

Wetter-Walsrode is also an ammonium nitrate explosive. It contains no guncotton but may contain potassium nitrate, sodium chloride, naphthalene, and various other substances.

=WESTFALITE= is a coal-mine explosive which is made in Germany and England. The German explosives vary much in composition, and some of them are intended for ordinary blasting. Some of those recently introduced contain up to 10 per cent. of potassium perchlorate. Originally Westfalite was made by milling ammonium nitrate with an alcoholic solution of gum lac, but later the use of the gum was abandoned.

British Westfalite, Ltd., had two mixtures on the old Permitted List--

No. 1. No. 2. Ammonium nitrate 95 91 Potassium nitrate -- 4 Resin 5 5

That formerly on the Permitted List differed considerably from the above--

Westfalite No. 3. Date of Permit 1-9-13 Ammonium nitrate 60 Potassium nitrate 14 Trinitro-toluene 5 Ammonium chloride 21

Limit charge 12 oz. Power (swing of ballistic pendulum) 2·55”

=WETTERDYNAMIT= is a name that has been given in Germany to various coal-mine explosives containing nitroglycerine.

=WETTER-DYNAMMON.= See =DYNAMMON=.

=*WETTEREN.=--A gelatinised rifle smokeless powder made by the Cooppal Co. of Belgium. The following analyses were given in “Arms and Explosives,” 1917, p. 91--

Date of Sample 1892 1893 Nitrocellulose, insoluble 16·0 57·3 ” soluble 46·2 37·6 Nitroglycerine 27·3 -- Shellac -- 3·5 Charcoal 9·0 -- Moisture 1·5 1·6

=WHITE GUNPOWDER= is a mixture of--

Potassium chlorate 50 Potassium ferrocyanide 25 Sugar 25

It is not produced commercially, and, indeed, is too sensitive, but it is sometimes made in the laboratory. It has also been called Angendre’s powder, White German powder, American powder, and Baron and Cauvet’s powder.

=WILHELMIT= is a German blasting explosive of the Cheddite type. It consists of sodium or potassium chlorate hydrocarbon oil with a flash point not below 30° C., and carbohydrates. For use in coal mines neutral salts are added. It was introduced during the War.

=WITHNELL POWDER.=--A coal-mine explosive of the Grisounite type made by the Lancashire Explosives Co., which was on the old Permitted List--

Ammonium nitrate 89·5 Trinitro-toluene 5 Flour 5·5

=WITTENBERGER WETTERDYNAMIT.= See =SALIT=.

=XPDITE= is an American coal-mine explosive on the Permissible List. It is made by the Hercules Powder Co., and contains nitroglycerine.

=YONCKITE.=--A Belgian ammonium perchlorate explosive. The composition has been varied somewhat, and one formula, No. 10, is on the list of Explosifs S.G.P., and consequently is permitted for use in Belgian coal mines. No. 1 is a more powerful explosive used for general blasting.

No. 10. I. Ammonium perchlorate 25 20 Ammonium nitrate 30 27 Sodium nitrate 15 27 Barium nitrate -- 6 Trinitro-toluene 10 20 Sodium chloride 20 --

Charge limite 900 g.

=ZELTIT.= See Celtite.

INDEX OF CONSTITUENTS

Acid, Nitric. Hellhofite. Sprengel Explosives.

Acid, Picric. See Picric Acid.

Agar. Amasite. Troisdorf Smokeless Powder.