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Charbonnage du Bois d'Avroy . alt source exifheading SVB BA Socit du Val Benoit Bois d'Avroy Puits Ancien puits du Bois d'Avroy fr Lige Belgique Ancient pit of the Bois d'Avroy coal mine in Lige Belgium Own Utilisateur Bel Adone Files by User Vberger Socit anonyme des Charbonnages du Bois d'Avroy Spulture de puits de