| • open pit mining | |
| गर्त: water hole trough depression head gear senke | |
| खनन: digging mining excavation mining | |
गर्त खनन अंग्रेज़ी में
[ garta khanan ]
| • open pit mining | |
| गर्त: water hole trough depression head gear senke | |
| खनन: digging mining excavation mining | |
