Wilhelmina Mine (1906 - 1969).
Production: 59.235.000 ton.
Location of mine site: Terwinselen, Kerkrade
Number of shafts: 2The mine was the first, and the smallest of the state owned mines.
It produced coal for domestic use, as its near neighbours, the Laura Mine, ON-II, and Domaniale Mine.The concession of the mine was bordered by the mines mentioned above, and besides going deeper, the mine could after a few decades not be extended anymore, in contrast to the large Emma, Hendrik and Maurits mines.