Smoking, firearms, etc. prohibited locations

Smoking, matches, open flames, spark producing devices and firearms shall be prohibited inside of or within 50 feet of any mixing and packaging plant or area or any warehouse used for the storage of blasting agents. Combustible materials, shall not be stored within 50 feet of mixing plants of warehouses used for the storage of blasting agents and the land surrounding such places shall be maintained clear of dried grass, leaves and brush for this distance.