The Wages of Fear (The Criterion Collection) (1953)

In the squalid, impoverished South American town of Las Piedras, desperate men and women from all over the world scrape out a living and dream of escape, under the watchful eye of the ruling Southern Oil Company. When a well explodes 300 miles away, the American company conscripts four of these unfortunates to drive trucks loaded with volatile nitroglycerin through treacherous mountains, a suicide mission that is their only way out.