gregory jurado was a local politician for many years. he spent much of his childhood here. while playing soccer matches, he remembers often hearing muffled explosions. gregory: we all wondered whether something dangerous had happened. but, as i remember, many people's initial response was they can't be doing anything dangerous because we're just 20 kilometers away from paris. reporter: but perhaps residents didn't know the truth. recently it's come to light that not everything was under control. last summer, sacks filled with radioactive waste were found at the site. they were discovered by workers from placoplatre, a firm which makes construction materials. it had bought the property to mine for gypsum. now placoplatre has been instructed to simply decontaminate the site -- without knowing exactly what took place here. the nuclear tests conducted here are still considered to be military secrets. a company spokesman says they're proceeding cautiously. gilles: at a site like this which is just earth, it's easy to spot these objects which are atypical and don't belong here. we