The Notre Dame Cathedral caught fire on April 15, destroying the structure's spiers and parts of the roof. Tons of lead from the structure melted from the fire, and the particles spread to the surrounding areas.
Work to renovate the cathedral was put on hold July 25 in order to improve the protection of workers from lead pollution. Equipment and procedures are being installed to ensure the safety of the workers and to better control access to the site in order to prevent any polluting elements from escaping.
"Our priority is to prevent any risk to employees working on the site," Paris prefect Michel Cabot said, "With new safety protocols and the delivery of two new decontamination units, the quality of lead decontamination of workers, machinery and equipment will be optimized. Thus, the site will continue to be safely ramped up."  Notre Dame fire could have been started by a cigarette or an electrical fault, prosecutors say ” data-src-mini=”//cdn.cnn.com/cnnnext/dam/assets/190415143344-09-notre-dame-fire-unfurled-small-169.jpg” data-src-xsmall=”//cdn.cnn.com/cnnnext/dam/assets/190415143344-09-notre-dame-fire-unfurled-medium-plus-169.jpg” data-src-small=”http://cdn.cnn.com/cnnnext/dam/assets/190415143344-09-notre-dame-fire-unfurled-large-169.jpg” data-src-medium=”//cdn.cnn.com/cnnnext/dam/assets/190415143344-09-notre-dame-fire-unfurled-exlarge-169.jpg” data-src-large=”//cdn.cnn.com/cnnnext/dam/assets/190415143344-09-notre-dame-fire-unfurled-super-169.jpg” data-src-full16x9=”//cdn.cnn.com/cnnnext/dam/assets/190415143344-09-notre-dame-fire-unfurled-full-169.jpg” data-src-mini1x1=”//cdn.cnn.com/cnnnext/dam/assets/190415143344-09-notre-dame-fire-unfurled-small-11.jpg” data-demand-load=”not-loaded” data-eq-pts=”mini: 0, xsmall: 221, small: 308, medium: 461, large: 781″ src=”data:image/gif;base64,R0lGODlhEAAJAJEAAAAAAP///////wAAACH5BAEAAAIALAAAAAAQAAkAAAIKlI+py+0Po5yUFQA7″/>