| • mine firing system | |
| सुरंग: cave mine tunnel chestnut underpass subway sap | |
| फायर: fire | |
| पद्धति: method | |
सुरंग फायर पद्धति अंग्रेज़ी में
[ suramga phayar padhati ]
| • mine firing system | |
| सुरंग: cave mine tunnel chestnut underpass subway sap | |
| फायर: fire | |
| पद्धति: method | |
