USA HISTORY

Detailed explanation-1: -Railroad engineers used this explosive compound mixed on site to move large sections of rock and earth, which was quicker than digging by hand. The unstable nature of nitroglycerin continued to be a problem during the course of Summit Tunnel construction, causing an untold number of laborer deaths.

Detailed explanation-2: -Alfred Nobel worked hard to improve nitroglycerine as an explosive that could be used in blasting rock and in mining. He made one of his most important discoveries when he found that by mixing nitroglycerine, an oily fluid, with kieselguhr, the mixture could be turned into a paste.

Detailed explanation-3: -Nitroglycerin is an explosive compound formed by the combination of glycerol and nitric and sulfuric acids. It was first synthesized in 1864 by chemist Ascanio Sobrero, who destroyed his notes for fear of the damage his highly unstable discovery might cause.

Detailed explanation-4: -Nitroglycerin, which was originally synthesized by Ascanio Sobrero, was used by Alfred Nobel to manufacture dynamite. It was in Nobel’s dynamite factories in the late 1860s that the antianginal effect of nitroglycerin was discovered.