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The upper part of the stage is bounded by the return air roadway, the lower part is bounded by the transport roadway, and the boundary of the well field is bounded along the strike.
- Chinese name
- midpiece
- Foreign name
- level
- exegesis
- Also known as sub-level
- subject
- Mine geology
explain
Also known as sub-level. In general metal mines, the stage is usually not further divided, then the middle stage is the stage. Production mines often refer to the middle section below a certain level level as a certain level middle section.
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