Hello, there is no fixed unified standard for this question, because it depends on many factors. You can refer to the relevant contents in the Regulations on Safety Management, Supervision and Inspection of Small Open Quarries, which stipulates that open quarries must keep a sufficient safety distance from residential areas, factories and other buildings, as well as public facilities such as roads and transmission lines, The visual straight-line distance from the residential area must be more than 500 meters. Tell me about the specific situation near you
Question: What is the safe distance from underground mining blasting to surface residential areas?