DZ/T 0462.4-2023 矿产资源“三率”指标要求 第4部分：铜等12种有色金属矿产

DZ/T 0462.4-2023 Mineral resource "Three Rates" Index Requirements - Part 4: Twelve types of non-ferrous metals such as copper The target indicator in English for mining activities. These requirements address key factors of effective reserve management, mining rate (output rate), processing rate, and production ratio (inventory, mining rate and recovery rate) for copper and other 12 types of non-ferrous metals