King Willem-Alexander Of The Netherdands And Queen Maxima Of The Netherlands Visit Former Mining Region [Getty Images]

KERKRADE, NETHERLANDS - OCTOBER 8: King Willem-Alexander of The Netherlands and Queen Maxima of The Netherlands visit the former mining region on October 8, 2015 in Kerkrade, Netherlands. The region this year celebrates the 'Year of the Mines', 50 years after the announcement of the closing of the mines. (Photo by Michel Porro/WireImage)

WireImage Michel Porro