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75 Years Later, Mount Rushmore Is Still an Engineering Marvel - Popular Mechanics

Popular Mechanics

75 Years Later, Mount Rushmore Is Still an Engineering Marvel
Popular Mechanics
These 60-foot-tall presidential mugs, which took 14 years to make, are an incredible engineering achievement even today. South Dakota historian Doane Robinson was the brains behind this enormous sculpture that now draws more than 2 million tourists to ...

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