This is a partial transcription of an article from McClure's Magazine, August 1897 issue: "The Great Dynamite Factory at Ardeer." You can see it as originally printed here:

https://babel.hathitrust.org/cgi/pt?id=mdp.39015030656139&vi...

The original has more pictures illustrating the text and is considerably longer. It goes on to describe much more about the explosives manufacturing complex than just the nitroglycerin production. It also describes a disastrous explosion that occurred just a week after the author visited in person.