The Oranje Nassau I was a Dutch coal mine located in Heerlen. The mine was in operation from 1899 until 1974.

Oranje Nassau I

Location
Oranje Nassau I
Location	Heerlen
Province	Limburg
Country	Netherlands
Coordinates	50°53′35″N 5°58′11″E / 50.89306°N 5.96972°E / 50.89306; 5.96972
Production
Products	Coal
Production	31,978,000 tonnes
History
Opened	1899; 125 years ago (1899)
Closed	1974; 50 years ago (1974)
Owner
Company	Oranje Nassau Mijnen

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".