Which film is about men racing nitroglycerine loaded trucks across the mountains of South America?

Tom, When “advances” are introduced, they are not adopted worldwide instantly. Cost and availability can play a big part. Let’s face it, there are still horses ploughing fields , there are still people making phone calls on a landline, etc. etc.

when was it set? nitroglycerin went out of favour in the 1890s or earlier, with Nobel producing dynamite and later the someone producing TNT. Before people were drilling for oil

It's a good film but I thought the 1977 remake called Sorcerer with Roy Scheider was much more intense.

RestingMensch41631, Yes. I remember it well.

wonderful film.