Where , in the course of the evaluation referred to in the first subparagraph , the market surveillance authorities find that the explosive does not comply with the requirements laid down in this Directive , they shall without delay require the relevant economic operator to take all appropriate corrective actions to bring the explosive into compliance with those requirements , to withdraw the explosive from the market , or to recall it within a reasonable period , commensurate with the nature of the risk , as they may prescribe .