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| open pit | |||
| surface mining (bigmaxus); open-cut ore mine (ОГР; OCM, OPM MichaelBurov); opencast mine (ОГР; OCM, OPM MichaelBurov); open-cast mine (ОГР; OCM, OPM MichaelBurov); opencut mine (ОГР; OCM, OPM MichaelBurov); open-pit mine (ОГР; OCM, OPM MichaelBurov); open-air pit (ОГР; OCM, OPM MichaelBurov) | |||
| openpit (Orzhakhovskiy) | |||
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| surface mines (olga garkovik) | |||
| открытый карьер: 7 phrases in 5 subjects |
| Cement | 1 |
| Geology | 1 |
| Makarov | 2 |
| Mining | 1 |
| Natural resourses and wildlife conservation | 2 |