I saw an old movie, manyyy years ago, but can't recollect the name. What I remember is that there are loads of vehicles (trucks)transferring some hazardous stuff across a treacherous terrain (mountain). Can't remember the name.. Having a feeling it had the word "wrath" in the title. But I could be wrong too.

Can someone please help ?

The Wages of Fear, or one of it's remakes.
The Wages of Fear - Movie connections (http://www.imdb.com/title/tt0046268/movieconnections)