This Regulation of the Government of the Republic of Slovenia, which is composed of nine articles and two Annexes, establishes, in relation to the emission of substances into the air, from foundries of aluminium and magnesium: specific limits of emissions of certain substances in waste gases (specified in art. 3); measures relating to the reduction of emissions into the air (art. 4); conditions of the adaptation of existing facilities to produce aluminium and magnesium (art. 7).