ST. HELEN’S POWDER.—A coal-mine explosive of the [Ammonal] type made by the Roburite Explosives Co., which was on the old Permitted List—
| Ammonium nitrate | 93·5 |
| Aluminium powder | 2·5 |
| Trinitro-toluene | 4 |
STOMONAL is a coal-mine explosive made by the New Explosives Co., Ltd. It was on the old Permitted List. In order to pass the Rotherham Test and obtain places on the new Permitted List, No. 1 and No. 2 have had salts added as cooling agents—
| No. 1. | No. 2. | ||
| Date of Permit | 22-6-14 | 9-5-17 | |
| Nitroglycerine | 8 | 10 | 10 |
| Ammonium nitrate | 84·5 | 56[2] | 60·5 |
| Sodium nitrate | — | 6 | — |
| Wood meal | 7·5 | — | 6·5 |
| Wheat flour | — | 8·5 | — |
| Sodium chloride | — | 19·5 | 17 |
| Ammonium oxalate | — | — | 6 |
Limit charge | — | 20 | 30 oz. |
| Power (swing of ballistic pendulum) | — | 2·68 | 2·57” |
STONAX is a low-freezing [Gelignite] containing a small percentage of a nitro-compound.
STOW-ITE.—A coal-mine explosive made by the New Explosives Co., Ltd. It was on the old Permitted List—
| Nitroglycerine | 59 |
| Collodion cotton | 4·7 |
| Potassium nitrate | 18·3 |
| Wood meal | 6 |
| Ammonium oxalate | 12 |
*STOWMARKET SMOKELESS is a 33-grain bulk powder for shot-guns made by the New Explosives Co. It is a comparatively inexpensive powder.
SUNDERITE was a coal-mine explosive made by Nobel’s Explosives Co., Ltd., at one time on the Permitted List—
| Date of Permit | 25-11-13 |
| Nitroglycerine | 9 |
| Ammonium nitrate | 53·2 |
| Potassium perchlorate | 9 |
| Wood meal | 8·8 |
| Ammonium oxalate | 20 |
Limit charge | 16 oz. |
| Power (swing of ballistic pendulum) | 2·66” |