ICS13.020.01CCSZ0621辽宁省地方标准DB21/T4069—2024一般工业固体废物回填与修复矿山采坑技术规范粉煤灰、炉渣Technicalspecificationsforbackfillingandremediationofminingpitsusingnon-hazardousindustrialsolidwastes:flyashandslag2024-12-20发布2025-01-20实施辽宁省市场监督管理局发布DB21/T4069—2024I目次前言..............................................................................II1范围..................
