Dust emission from crushing of hard rock aggregates ...
2019-3-1 · The number of crushing units varied between two and four and the volume of produced aggregates between 170 t/h and 450 t/h. The majority of the quarries (1, 3, 4 and 5) applied secondary crushing, i.e., the production included two crushing units. Quarries 2 and 6 applied tertiary crushing, relying on three and four crushing units, respectively.