Before revision: Depending upon the objects being destroyed, participants and especially the workers, who have all-day, every-day exposure to both airborne particles and contact from cleaning up the mess afterwards, may be exposed to toxic chemicals, such as the mercury in old electronics and lead in leaded glass .
After revision: Depending upon the objects being destroyed, participants ,, and lithium in lithium batteries especially the workers, who have all-day, every-day exposure to both airborne particles and contact from cleaning up the mess afterwards, may be exposed to toxic chemicals, such as the mercury in old electronics and lead in leaded glass .