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A complete concrete cylinder before explosive testingDec 08, 2019
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Four that have been blown with different explosive pressuresDec 08, 2019
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Loads of these lying aroundDec 08, 2019
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A close up showing the detonator still in situDec 08, 2019
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Obviously a smaller charge in this oneDec 08, 2019
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A disused control tunnelDec 08, 2019
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Love this. Steps to nowhereDec 08, 2019
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A second bunker. Empty and not in as good a condition.Dec 08, 2019
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Water and pressure gaugesDec 08, 2019
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Negretti and Zambra. An iconic manufacturer with royal connectionsDec 08, 2019
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Into the active part of the site. Camera and surveillance equipment everywhere.Dec 08, 2019
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Even in here there are some abandoned itemsDec 08, 2019
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Superseded by more advanced techniques nowDec 08, 2019
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More bunkersDec 08, 2019
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Slightly different layout insideDec 08, 2019
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