| 11. | Also, in 1846, two plants were built in south-west England to make blasting powder using this sodium nitrate.
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| 12. | Sodium nitrate was suitable for blasting powder, which was used in the mines and quarries of the region.
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| 13. | This is one of the first known examples of blasting powder being used for engineering purposes anywhere in the world.
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| 14. | The other Relieving Chambers were discovered in 1837-1838 by J . S . Perring, who dug tunnels upwards using blasting powder.
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| 15. | Within two years of William s return, two additional plants had been built in Devon / Cornwall to make blasting powder.
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| 16. | During the construction of the canal, blasting powder, which at the time was essentially gunpowder, was used to blast through solid rocks.
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| 17. | Ninety-two miners were killed in the explosion, which was caused by the ignition of black blasting powder, while another 44 were injured.
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| 18. | While the high school was being built, workers discovered a huge cache of blasting powder in a manhole adjacent to the construction site.
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| 19. | In 1857, Lammot du Pont solved the main problem of using cheaper sodium nitrate formulations when he patented DuPont " B " blasting powder.
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| 20. | Lindsey said that his company, Lindco Equipment and Supply, had 600 pounds of blasting powder and more than 1, 200 sticks of dynamite stolen in 1991.
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