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| International Standard Category: Mining and minerals |
GB 50416-2007 Code for design of chambers around pit-bottom of coal mine
煤矿井底车场硐室设计规范;
| Category No.: | 73 | Valid Status: | superseded |
| Issued Organization: | MOC | Issued Date: | 2007-5-21 |
| Implemented Date: | 2007-12-1 | Abolished Date: | 2018-01-01 |
| Superseded Standard.: | GB 50416-2017 Code for design of pit-bottom and chambers coal mine |
Superseded Date: | 2018-1-1 |
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