The library is a gold mine of information.
the estate sale promises to be a gold mine for antique dealers
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Both regions include many of Sudan’s oil fields and gold mines.—Samy Magdy, Los Angeles Times, 15 Apr. 2026 Both regions include many of Sudan’s oil fields and gold mines.—ABC News, 14 Apr. 2026 The Prado is a gold mine of mastery and inspiration.—Condé Nast, Condé Nast Traveler, 11 Apr. 2026 Francisco Zapata Nájera, 42, was working in a gold mine in the northern Mexican state of Sinaloa on March 25 when an embankment collapsed and a dam burst, leaving him stuck 985 feet below the surface, per the BBC, ABC and NBC.—Adam England, PEOPLE, 10 Apr. 2026 See All Example Sentences for gold mine