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Railroad question
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John Smith
Posted 10/17/2020 02:53 (#8549709 - in reply to #8549697)
Subject: RE: Railroad question

South Central Illinois
Nitroglycerin was used from 1847 to 1867.
Probably the Pacific railroad was built only with nitroglycerin.
In 1867 it was mixed with soil as a stabilizer.
Thus dynamite was invented.
I think that the mountain sections were already completed at this time.
TNT was discovered in 1863,
It made a really great yellow dye.
It took 30 years to discover that it could explode.
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