A big fire at a lab near Atlanta spewed chemicals into the air. Here’s what we know. Vox.comBioLab fire: Rockdale County shelter-in-place warning issued after weather change FOX 5 AtlantaRockdale County chemical plant fire: New shelter-in-place warning issued for gas cloud banking down WSB AtlantaConyers BioLab fire | Here’s what an environmental expert says Georgia residents should do next 11Alive.com WXIAShelter-in-place advisory extended in Georgia county after chlorine detected in air Yahoo! Voices