High fences blocked Parisians and tourists from several streets and a bridge around the monument on Tuesday.

The culture ministry said workers plan to use two decontamination techniques.

One involves spreading a gel on public benches, street lights and other fixtures to absorb the lead, letting it dry for several days before removing it.

Another method will feature high pressure water jets with chemical agents.

The clean-up work inside Notre Dame, suspended last month for safety reasons, will resume next week.

Hundreds of tons of lead in Notre Dame’s spire and roof melted during the April fire.

Stay up to date with the latest news stories from a Christian perspective. Sign up to our daily newsletter and receive more stories like this straight to your inbox every morning.

Sampson responded to a Christian Post open letter to the worship leader from columnist Michael Brown, entitled “Reaching out to a Hillsong leader who is renouncing his faith.” In it Brown said he prays Sampson “would have the integrity of heart to seek the truth earnestly, with humility and passion, and that all others with questions will put those questions on the table.”

After emphasizing he truly wants answers to his questions, Sampson admitted he’s “struggling with many parts of the belief system that seem so incoherent with common human morality.”

“If most of humankind had a choice, would we not rid the world of the scourge of cancer? Or sickness and disease? Why doesn’t God do such a thing? Of course there is an answer to this question, but the majority of a typical Christian’s life is not spent considering these things,” he wrote. “Questions such as these remain in the too hard basket.”

The artist, who has been with the worship team at Hillsong since he was 16, clarified he wouldn’t say he has “renounced” his faith but would say “it’s on incredibly shaky ground.”

He said: “I have and continue to analyse the arguments of prominent Christian apologists and biblical scholars, and am open minded enough to consider the arguments of atheist debaters and debaters from other religions.
“If the truth is true, it will remain so regardless of my understanding of it….