Stop Syar Quarry’s Uncontrolled Pollution Respirable Crystalline Silica (RCS) Dust Cancer Monitoring and Testing Autism Spectrum Disorder (Harvard Study) Air pollution and affect on students grades Acute and chronic effects of low-concentration PM FedOSHA New Rule Lack of required water mitigation to control toxic dust Air Pollution: Dementia, Alzheimer’s, Parkinson’s Disease Air Pollution: Children’s Low GPAs Discover Magazine: Epigenetics Black carbon Toxic air contaminants in asphalt emissions Tier of Quarry equipment Tier ratings