Workers returned to Notre Dame cathedral in Paris on Monday, as efforts to clear out hazardous debris and to secure the building ahead of restoration works resumed.

The works were suspended in July after inspection raised fears of workers and local residents potentially being exposed to dangerous levels of lead.

Tonnes of lead from the roof of the cathedral and its steeple melted in the blaze on April 15, 2019, and particulates of the poisonous metal are thought to have been spread across a wide area by the fire's smoke. Lead poisoning can be lethal with even small amounts capable of severely impacting health as well as the mental and physical development of children.

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France 24 23 Sep 2019 11:11 CEST

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