Add Yahoo as a preferred source to see more of our stories on Google. British surveyor Michael Spender created the first detailed photogrammetric map of Mount Everest’s North Face in 1935 using 1,200 ...
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Michael Spender, the Man Who Mapped Mount Everest
British surveyor Michael Spender created the first detailed photogrammetric map of Mount Everest’s North Face in 1935 using 1,200 aerial photos and ground measurements. His map guided major British ...
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