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Continue to ChatRussian engineers begin drilling the world's deepest hole - May 24th, 1970 https://omny.fm/shows/this-day-in-history-class/russian-engineers-begin-drilling-the-worlds-deepes
Russian engineers begin drilling the world's deepest hole - May 24th, 1970 https://omny.fm/shows/this-day-in-history-class/russian-engineers-begin-drilling-the-worlds-deepes