The Oranje Nassau I was a Dutch coal mine located in Heerlen. The mine was in operation from 1899 until 1974.
Chimneys Lange Jan (right) and Lange Lies (left) in 1976
The Oranje Nassau I was the oldest and second largest of the four Oranje Nassau Mijnen-mines. Close to the mine there were several coal washing plants and a large electric power station. The mine dominated the skyline of Heerlen with its two tall chimneys nicknamed "Lange Jan" and "Lange Lies".
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