Surface Mining Hazards, Underground Mining Hazards, Alerts by Hazard, and Hierarchy of Controls. The original data mainly came from multidisciplinary teams of mineworkers, mine management,inspectors of mines, and where relevant experts from other fields. Besides the Mining Hazards Database, the Minerals Industry Risk Management Gateway (MIRMgate) developed by the University of Queensland is a portal to a comprehensive library of information related to hazard and risk management in the mining, minerals processing and quarrying industries (www.MIRMgate.com). MIRMgate provides direct access to online resources sourced from Australian and global minerals industry bodies, including companies, industry associations and regulatory bodies. The above researches provide a promising theoretical support for improving risk management in coal mines. However, the current studies of hazards do not address or clarify the misunderstanding or confusion about the internal relations of hazards, risks, and accidents, which can undermine the ability to discern objects of risk management and perform effective risk management activities. Therefore, to help address the gaps in the research, this paper classifies the hazards deeply in coal mines and differentiates their relationship with accidents and then explores accident-causing mechanism based on the above hazards classification, and puts forward the polarized management of hazards finally.