Piotr Krzyzewski, KGHM vice president in charge of finance, poses for a photo during an AFP interview at the headquarters of KGHM, the country's metallurgical giant, in Warsaw, on March 27, 2026. Thousands of meters beneath the ground, amid suffocating heat, lies one of the keys to Poland's rumbling mining sector -- and the world economy. (Photo by Wojtek RADWANSKI / AFP via Getty Images)