Ammonkarbonit is a German coal-mine explosive, containing about 80 per cent. of ammonium nitrate and 4 per cent. of blasting gelatine, together with 5 or 10 per cent. of potassium nitrate, and a combustible such as flour, starch or coal dust. Sodium or potassium chloride may be added as a cooling agent. It has been used for blasting clay. Gelatine-Karbonit is a Carbonite containing ammonium nitrate, and a considerable proportion of nitroglycerine gelatinised with collodion cotton. Halokarbonit is similar to Ammonkarbonit, except that a considerable proportion of the ammonium nitrate is replaced by other nitrates. =CARLSONITE= was the first ammonium perchlorate explosive submitted to H.M. Inspectors of Explosives. It was proposed in 1898 by Carlson of Stockholm, and some of the mixtures were reported on favourably, but no licence was ever taken out in the United Kingdom for this explosive. =C.E.= (Composition Exploding) is the same as Tetryl. =CELTITE= was a coal-mine explosive made by Dr. R. Nahnsen & Co., Hamburg, and formerly permitted for use in British coal mines, having passed the Woolwich Test. Nitroglycerine 57 Nitrocotton 3 Potassium nitrate 19 Wood meal 9 Ammonium oxalate 12 It was also called Zeltit. =*CENTRALITE= is not an explosive, but is a name given to a substance which has been used to modify the surface of smokeless powder, and make it burn progressively. The substance is dimethyl-diphenyl-urea. (See Brit. Pat. 29,882 of 1909.) It acts also as a stabiliser. =CHEDDITE= is a chlorate explosive which has been rendered less sensitive by having the particles of chlorate coated with castor oil or paraffin wax. It is manufactured by the French Government at the Vonges Powder Works, and has also been made in other countries. The two types that have been most used in France are-- O2 or No. 4. O5 or No. 1. Potassium chlorate 79 -- Sodium chlorate -- 79 Castor oil 5 5 Mononitro-naphthalene 1 -- Dinitro-toluene 15 16 =*CHEESA STICKS= are sticks of cordite coated with powdered ammonium oxalate and shellac. They are used in South Africa as fuses for blasting charges. They are authorised in England only for manufacture and immediate export. =*CHILWORTH SMOKELESS POWDER.= See =C.S.P.= =*CHILWORTH SPECIAL POWDER.= See =AMIDE POWDER=. =CHLORATIT= is an Austrian explosive, which was permitted for use in coal mines during the War. =CHLORATZIT.=--A German explosive containing potassium chlorate or perchlorate, aromatic nitro-bodies, resins and carbohydrates. For use in coal mines neutral salts are added as cooling agents, and the name then has =WETTER= or =KOHLEN= prefixed to it. =CHROMAMONIT= was a coal-mine explosive formerly made in Germany--