Membership books of the trade association of "Christian Miners in the Saar Region". The trade association of "Christian Miners in the Saar Region" was founded in 1894 and was an officially non-denominational association, though it was,= in reality highly influenced by Catholicism. It competed with the Diözesanverband Katholischer Arbeitervereine (literally: "Diocesan Association of Catholic Workers Fellowships") founded on the request of Bishop Korum of Trier.