There are also a number of modified Gelignites, which either contain sodium or barium nitrate in partial or entire replacement of the potassium nitrate, or else contain some substance to reduce the freezing point of the nitroglycerine and so diminish the danger of freezing, such as dinitro- or trinitro-toluene or dinitro-glycol.
GESILIT.—A German coal-mine explosive made by Nahnsen. It contains [blasting gelatine], inorganic nitrates, sodium chloride, carbohydrates and dinitro-toluene—
| I. | II. | III. | |
| Blasting gelatine | 30·75 | 30·75 | 32·5 |
| Ammonium nitrate | — | 22 | 22 |
| Sodium nitrate | 18 | — | — |
| Dinitro-toluene | 5·25 | 5·25 | 5·25 |
| Dextrin | 39 | 21 | — |
| Pea flour | — | — | 20 |
| Sodium chloride | 7 | 21 | 20·25 |
When tested in a gallery with an explosive gas mixture I. proved to be safer than the other two.
GIANT COAL-MINE POWDERS are American coal-mine explosives on the Permissible List. No. 5 is an ammonium nitrate explosive, whereas Nos. 6, 7 and 8 are low-grade dynamites mixed with hydrated salts.
GIANT POWDER is a name given in America to dynamite. No. 1 is a kieselguhr dynamite containing about 75 per cent. of nitroglycerine. Many varieties, however, do not contain kieselguhr, but consist of nitroglycerine mixed with wood pulp, sodium or potassium nitrate, resin, sulphur or other combustible matter. The nitroglycerine is sometimes gelatinised with collodion cotton, or in the “Extra” varieties is partially replaced by ammonium nitrate.
GLONOINE was an early name for nitroglycerine.
GLUECKAUF.—A German explosive of the [Grisounite] type consisting of ammonium nitrate and vegetable meal, to which might be added any of the following: sugar, resin, fatty oil, potassium nitrate, sodium nitrate, dinitro-benzene, ammonium oxalate, copper oxalate, copper nitrate ammonia, or sodium chloride. It was used for a time by several potash mines; was given up again by most of them.
GOOD LUCK was an explosive made by the Sprengstoffwerke Glueckauf A.-G., and was on the old British Permitted List for coal-mine explosives. It had the composition—
| Ammonium nitrate | 82·5 |
| Dinitro-benzene | 1 |
| Turmeric | 10·5 |
| Copper oxalate | 6 |