
Emission of respirable dust from stone quarrying ...
· Sample collection and analysis. Bakhrija quarry is surrounded by a number of stone crushing units (≈ 25 units) around it. Samples of suspended particulate matter (PM and PM 10) were collected from four loions in and around Bakhrija mines during the premonsoon season (June 2019).During the sample collection, the ambient temperature varied from 43 to .