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FRIEDENS, PA - JUNE 08: President Donald Trump delivers a recorded message at the grand opening of Corsa Coal's Acosta Deep Mine on June 8, 2017 in Friedens, Pennsylvania. The mine is expected to create more than 70 new jobs and should produce 400,000 tons of metallurgical coal a year. (Photo by Justin Merriman/Getty Images)

FRIEDENS, PA - JUNE 08: President Donald Trump delivers a recorded message at the grand opening of Corsa Coal's Acosta Deep Mine on June 8, 2017 in Friedens, Pennsylvania. The mine is expected to create more than 70 new jobs and should produce 400,000 tons of metallurgical coal a year. (Photo by Justin Merriman/Getty Images)