Puits St.Nicolas, puits Merlebach-Nord´s twin, was in use as a supplementary pit of Warndt mine. Moreover since 1962 was also in use by german mining society Saarbergwerke.
Keywords: lotrinsko, coal mining, uhelné hornictví, důl, šachta, těžní věž, headframe, pithead, colliery, Bassin houiller lorrain
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