| Date of Permit | 1-9-13 |
| Nitroglycerine | 23 |
| Nitrocotton | 1 |
| Potassium nitrate | 34 |
| Wheat flour | 36 |
| Ammonium chloride | 6 |
Limit charge | 38 oz. |
| Power (swing of ballistic pendulum) | 2·17” |
EUREKA No. 2 is an American coal-mine explosive on the Permissible List. It contains nitroglycerine and a hydrated salt.
EXCELLITE.—A coal-mine explosive formerly on the Permitted List—
| Nitroglycerine | 8 |
| Ammonium nitrate | 82·5 |
| Collodion cotton | 1 |
| Dinitro-toluene | 3 |
| Wood meal | 4·5 |
| Castor oil | 1 |
[SUPER-EXCELLITE] is a modification of this, containing salts as cooling agents. Three formulæ passed the Rotherham Test—
| No. 2. | No. 3. | ||
| Date of Permit | 1-9-13 | 7-4-14 | 22-6-14 |
| Nitroglycerine | 4 | 5 | 9·5 |
| Collodion cotton | — | — | 0·5 |
| Ammonium nitrate | 75·5 | 50 | 59 |
| Potassium nitrate | 7 | 20 | — |
| Starch | 3·5 | 5 | 4·5 |
| Castor oil | — | — | 1 |
| Ammonium chloride | — | 5 | — |
| Sodium chloride | — | — | 15 |
| Ammonium oxalate | 10 | 15 | 10·5 |
Limit charge | 10 | 14 | 36 oz. |
| Power (swing of ballistic pendulum) | 2·74 | 2·72 | 2·73” |
It will be seen that all three are about equal as regards power, but that No. 3, which contains the largest proportion of cooling agents and more nitroglycerine, can be used safely in much greater charges. In 1916 807,000 lbs. of No. 3 were used in mines and quarries, principally in coal mines. It is recommended by the makers, Curtis’s and Harvey, for hard coal and colliery work generally. The permits of the others have been repealed.
EXPEDITE is a coal-mine explosive on the Permitted List made by Explosives and Chemical Products, Ltd.—
| Date of Permit | 25-11-13 |
| Ammonium nitrate | 35 |
| Potassium nitrate | 33 |
| Trinitro-toluene | 12 |
| Ammonium chloride | 20 |
Limit charge more than | 32 oz. |
| Power (swing of ballistic pendulum) | 2·62” |
See also [XPDITE].