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What engineering approach was first used in the construction of the Blue Ridge Tunnel built through Afton Mountain in the 1850s? Group of answer choices

What engineering approach was first used in the construction of the Blue Ridge Tunnel built through Afton Mountain in the 1850s? Group of answer choices Construction workers used pick axes to hollow out the tunnel by hand A specially designed steam engine was used to drill through the mountain There was no chief engineer on the project; the workers figured it out on their own as they worked Construction began on both sides and met in the middle

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