Workers stand next to an excavator robot during preliminary work in the Notre-Dame Cathedral, three months after a major fire, in Paris, France July 17, 2019. French lawmakers on Tuesday (July 16) approved a bill aimed at facilitating the gathering of donations for the reconstruction of Paris' fire-ravaged Notre-Dame cathedral. Stephane de Sakutin/Pool via REUTERS

Workers are seen during preliminary work in the Notre-Dame Cathedral, three months after a major fire, in Paris, France July 17, 2019. French Culture Minister Franck Riester said the parliament has demonstrated it deserves the "generosity" of hundreds of donors from around the world. Stephane de Sakutin/Pool via REUTERS

A scaffolding is seen during preliminary work in the Notre-Dame Cathedral, three months after a major fire, in Paris, France July 17, 2019. Stephane de Sakutin/Pool via REUTERS

A part of a destroyed ribbed vault is seen during preliminary work in the Notre-Dame Cathedral, three months after a major fire, in Paris, France July 17, 2019. Stephane de Sakutin/Pool via REUTERS

Workers are seen near an excavator during preliminary work in the Notre-Dame Cathedral, three months after a major fire, in Paris, France July 17, 2019. Stephane de Sakutin/Pool via REUTERS

Parts of a destroyed rib vault and scaffolding are seen during preliminary work in the Notre-Dame Cathedral, three months after a major fire, in Paris, France July 17, 2019. Stephane de Sakutin/Pool via REUTERS