Dust-producing substances in dust category SC1 shall be stored in an enclosed storage facility or covered with fine-mesh nets or tarpaulins. If the substances are covered, appropriate measures shall be taken to counter dust emissions during filling and when excavating the storage pile.
The number of openings in an enclosed storage facility shall be as low as possible. The openings shall be as small as possible. Non-functional openings shall be closed. Functional openings in the enclosed storage facility shall be kept closed as much as possible. When filling or emptying an enclosed storage facility, the transfer points shall be placed as far away as possible from the openings.