| • दीर्घभित्ति खनिस्थल | |
| working: प्रचालन | |
longwall working मीनिंग इन हिंदी
longwall working उदाहरण वाक्य
उदाहरण वाक्य
- It passed through the longwall workings there and returned via the older stoop and room workings before joining the north current return and passing up the upcast, number 5 pit.
