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In page Stavanger:

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Before repatriation, the Germans were required to remain and clean up after five years of occupation. There were 180 German minefields in Rogaland, with a total of 480,000 mines, all of which the German Wehrmacht were required to clear. 62 Germans were killed and 94 were injured during mine clearance in Rogaland. Mines from this period continue to be uncovered.[1]