Slide 03/07 - 5 October 2022 - Visit of the La Ferte-sur-Chiers work |
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 Height -40m (?) - Underground gallery connecting Block 2 and Block 1 - Sectional view |
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Slide 03/07 - 5 October 2022 - Visit of the La Ferte-sur-Chiers work |
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Height -40m (?) - Underground gallery connecting Block 2 and Block 1 - Sectional view |
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