Division '3.1 Production of cement, lime and magnesium oxide', which involve:

production of cement clinker in rotary kilns with a production capacity exceeding 500 tonnes per day or in other kilns with a production capacity exceeding 50 tonnes per day;

production of lime in kilns with a production capacity exceeding 50 tonnes per day;

production of magnesium oxide in kilns with a production capacity exceeding 50 tonnes per day.