The Oranje Nassau IV (located in Heerlerheide, Heerlen), the last and smallest mine exploited by the Oranje Nassau Mijnen, started its life as a ventilation shaft for Oranje Nassau III. In 1910 the construction of a mine shaft was started. However the construction was halted and only reassumed in 1919, the mine became operational in 1927.
 This image of Shaft 2 of Oranje Nassau I, gives an idea of how the shaft of ON-IV looked. | |
| Location | |
|---|---|
  Oranje Nassau Mijn IV Location in the Netherlands | |
| Location | Heksenberg, Heerlen |
| province | Limburg |
| Country | Netherlands |
| Coordinates | 50°54′59″N 5°58′37″E / 50.91639°N 5.97694°E |
| Production | |
| Products | Coal |
| Production | 13,754,000 tons |
| History | |
| Opened | 1927 |
| Closed | 1966 |
| Owner | |
| Company | Oranje Nassau Mijnen |
Underground, the mine was connect to the Oranje Nassau III and, for safety reasons, also the Staatsmijn Hendrik. In 1966 it became the first of the Oranje Nassau mines to close; though mining activities continued until 1973via Oranje Nassau III.
The mine was 740 metres (2,430 ft) deep and produced 13,754,000,000 kilograms (3.0322×1010 lb) of coal during its operational period.
The terrain is now used by the Sigrano, a silversand mine, part of Sibelco.
External links
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