"SCORES of times every day in an area near Hungry Horse, Montana, a man-made hurricane takes place. Hurtling through heavy timber with relentless force and a crash heard for miles, a giant steel ball, as big as a garage, snaps trees two feet thick as easily as if they were match sticks," the 1953 Mechanics Today story begins. "Known as the "ball that saves millions," this is a revolutionary method for clearing timber in record-breaking time and far cheaper on a large scale, than anything else ever known."
Wow.
Via Tim Maly




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