Open Access Research Paper Views (254) Download (14) The evaluation of airborne respirable particulates in opencast mining area of Jharia coal field using grimm 1.109 real-time portable aerosol spectrometer Snigdha Kundu, Asim Kumar Pal J. Bio. Env. Sci.6( 4), 276-287, April 2015. Key: Grimm 1.109PM1PM10PM2.5SEM-EDX Details