Decree of the Ministry of Labour and Social Affairs and the Czech Mining Office No. 159 / 2002 Coll.
Decree of the Ministry of Labour and Social Affairs and the Czech Mining Office amending the Order of the Czech Office of Labour Safety and the Czech Mining Office No. 20 / 1979 Coll., determining reserved electrical equipment and laying down certain conditions to ensure their safety, as amended by Decree No. 553 / 1990 Coll. and Decree No. 352 / 2000 Coll.