This drill rod was used for drilling inside coal seams, among other things for the extraction of drilling cuttings in order to identify areas under threat of rock bursts. These cuttings are rock bits crushed by drill bits.
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Details
Title: Drill rod with core bit
Creator: Guido Wolff, Saarbrücken, Staatskanzlei des Saarlandes Open Gallery
Subject Keywords: Das Erbe Kapitel 12 – Laut und Schwer
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