After the huge fire of Notre-Dame cathredal, Paris more than three weeks ago some tests concluded that there was a high concentration of lead on the squares, streets and houses near the Notre-Dame.
Although 300 tonnes of lead were vaporized into the air and although the concentration is to 60 times as much as is considered safe, the air around the Notre-Dame is not toxic police said. The lead that vaporized in the air originates from the tower that broke down. I did not know why you would need 300,000 kilos of lead to make a tower like that; bricks would work just as fine and is 8 times lighter and not toxic.