Soda blasting powder

Properties Slightly more moisture-resistant, stronger, and quicker than Blasting Powder B, which contains nitrate of soda instead of the saltpeter. 

PudrolUh. Poctfu blasting powder, known under this name, consists of 3 parts by weight of spent tan, 5 of sawdust, 3 of soda saltpetre, 3 of barium nitrate, 0 of wood charcoal, 12 of sulphur, and 68 of saltpetre. The barium and sodium salts are dissolved in hot water, the tan and sawdust stirred into the solution, and the mixture is evaporated to dryness. The other ingredients, previously pulverized, are iutimately mixed with the powdered residue in a revolving cylinder. 

Trets Blasting Powder, patented in England, consists of 52.5 per cent, of Chili soda saltpetre, 20 per cent, of sulphur, and 27.5 per cent, of spent tan. 

For blasting softer rocks, such as limestone, coal, etc., Wattlen recommends the following composition 11 parts by weight of sawdust, 50.5 of saltpetre, 16 of soda saltpetre, 1.5 of powdered charcoal, and 20 of dowers of sulphur. 

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