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The Drehschürfbohrgerät als Anhänger (2 achs) fahrbar - rotary digging-drilling rig as trailer (2 axle) movable - was used for defence geologists explorations. The device could reach a drilling depth of 150 meters. It could be used for dry drilling and for flush drilling. (Image from Bilderatlas eingeführte Waffen und Geräte)
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