Translate the following English sentence to French:
"These two explosions, which occurred only a few days after the tragic incident near Amsterdam, not to speak of the persistent explosions in Spain, are a reminder of the danger posed by these factories when they are located in residential areas."
Ces deux accidents survenus quelques jours seulement après l' explosion particulièrement dramatique près d' Amsterdam, sans oublier les explosions récurrentes en Espagne, viennent rappeler le danger que représentent les usines situées en zone habitée.