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When built (1953), the bunker was bomb proof for bombs of that period, with walls 120 centimeters thick.
Telephone cables extend outward to all gun emplacements and (pillboxes) and bunkers, about 2 meters deep.
The bunker was built in 1953 by the Amsterdamse Aannemingsmaatschappij (construction contractors) at a cost of 206,896 Dutch Gilders. That is now the equivalent of 93,885 Euros.