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See Chinese contents: GB/T 19494.1-2023 GB/T 19494.1-2023: Mechanical sampling of coal -- Part 1: Method for sampling
This document specifies the general requirements and precision of mechanized coal sampling, the establishment of sampling schemes, the moving coal flow sampling method and stationary coal sampling method, as well as packaging and marking of coal samples, and sampling reports. This document is applicable to lignite, bituminous coal and anthracite coal.
