Crushing is a specific operation in widespread use in manufacturing or treatment processes in many industrial sectors. Its purpose varies according to the branch of activity in which it is employed. The preparatory study on the topic of crushing focused on reducing exposure to any harmful chemicals caused by this particular operation. In this respect, it was shown that the recycling sector is an area of activity where crushing is virtually unavoidable when exploiting waste products, and that it is a major source of employee exposure to toxic pollutants. Among the many crushing technologies employed in this sector of activity, impact fragmentation appears to be particularly polluting. The study proposed will thus focus on looking for emission reduction solutions to reduce the emissions of impact crushing technology. In particular, three areas intended to reduce the harmful effects of chemicals will be explored during this study by way of external partnerships: pollutant segregation inside the crushing chamber, integration of wet abatement solutions and, finally, development of wet processes when the material allows for this.