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Updated: June 10, 2025
It was therefore necessary to manufacture some more nitro-glycerine, and the nitro-glycerine did its accustomed work. In less than a fortnight a ditch, twelve feet wide and six deep, was dug out in the hard ground of the plateau.
"Not at all dangerous, at least not worth speaking of," replied the manager; "nitro-glycerine by itself is indeed very dangerous, being easily exploded by concussion or mere vibration; but when mixed with infusorial earth and thus converted into dynamite, it is one of the safest explosives in existence not quite so safe, indeed, as gun-cotton, but much more so than gunpowder.
As all of the smokeless powders made of a low grade gun-cotton were found to deteriorate and spoil, experiments were made with gun-cotton of the highest degree of nitration, both alone and in combination with nitro-glycerine.
We have about a hundred quarts of nitro-glycerine down in the pipes now; but it hasn't gone off yet." "Can you er tell me when it will go off?" asked Mr. Sneed, looking about him nervously. "Any minute, if not sooner," replied the oil man, with a smile. "Oh, don't run you're safe here," he added, as Mr. Sneed began to move away.
"Nothing save this last scheme of Bob's, and that is quite enough. I don't consider shooting wells as anything really illegal, for I do not believe that the patent can be held. But when it comes to violating a town ordinance by carrying a large quantity of nitro-glycerine through it in the manner Bob did, I consider a great wrong has been done, for it endangers the lives of every one living there.
And what shall we say to performances such as the explosion of nitro-glycerine? Much may be urged in extenuation of the offences of the German students in the seventeenth century.
The little boat had been made with a thin false bottom in which was placed a quantity of nitro-glycerine. The friction pins were connected with the brass rings and the moment her weight was on them the pins were pulled out and the explosive discharged. It may be imagined that after such costly experiences, the Chileans redoubled their watchfulness.
"Without any doubt, the island, continents, and the world itself," replied the engineer. "It is only a question of quantity." "Then could you not use this nitro-glycerine for loading firearms?" asked the sailor. "No, Pencroft; for it is too explosive a substance. But it would be easy to make some guncotton, or even ordinary powder, as we have azotic acid, saltpeter, sulphur, and coal.
Having now explained how the knowledge came to be arrived at that the aforementioned compound of highest grade nitro-glycerine and highest grade gun-cotton would constitute the best basis for a smokeless powder, I will now mention a few of the other conditions necessary to success with its use, without assuming that smokeless powder has yet passed its experimental stage, and is beyond further improvement.
"Well, I'm always expecting to hear that it's blown up. It reminds me of nitro-glycerine," he added, smiling. She repeated the word. "An explosive, you know they put it in dynamite. They say a man once made it by accident, and locked up his laboratory and ran home and never went back." "I know what you mean!" she cried, her eyes alight with excitement. "All those foreigners!
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