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Compagnie des Charbonnages de Rty Ferques et Hardinghen tat des travaux vers . Compagnie des Charbonnages de Rty Ferques et Hardinghen vers mileAlexandre Vuillemin Le Bassin Houiller du PasdeCalais Tome II Imprimerie Danel Creator mile Vuillemin PDold Compagnie des Charbonnages de Rty Ferques et Hardinghen