Author: GRÖPPEL Franz - Bochum ( publisher ) :
Title: Préparation Mécanique des Minerais Fr. Gröppel. Successeur de Lühring - Maison fondée en 1867. Bochum, Bruxelles, Paris. (German trade catalogue in French for machinery to process mineral ores).
Description: .: Bochum, Franz Gröppel, s.d ( around 1906-19078), in-4°, ca. 200 nn pp, with the original stiff wrapper. Bound together with a silk tie. Text in French. Well illustrated trade catalogue of this German manufacturer of machinery and equipment for the treatment of mineral ores. The first part of the catalogue describes all sorts of machines ( steel ball mills , crushing mills , ore separation and sorting machines...etc.) The second part of the catalogue illustrates projects which have been executed by the company. Illustrations consist of groundfloors, overall pictures of the installations, detailed pictures of the machinery. Descriptions of '' Diepenlinchen Mine in Stolberg '' - Copper mine at Klingenthal ( Saxony )'' - ''Zinc mine at Virneberg (Eiffel) ''. '' Lead and zinc mine Berzelius at Bensberg'... These items consists each of several pages with illustrations. The catalogue ends with copies of letters of thanks and recommandation from the clients. High quality catalogue in a nearly mint condition. .

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