Only Mother Jones would believe that 6 tons of dynamite was "the largest nonnuclear explosion since World War II."
With 1,375 tons of explosives packed into the peaks, April 5, 1958 was the date set for detonation . On that day, at 9:31 a.m., Dr. Victor Dolmage, consulting engineer for the Ministry of Public Works, pushed the plunger that set off the largest non-nuclear explosion ever.
I remember that! Saw it on live TV.
Cool link and a great engineering feat.