avolouhos, ruskohiili, kaivukoneiden kaivinkoneet, kaivostoiminta, ruskohiilen louhinta, hiilikaivostoiminta, Avaa ruskohiilikaivos, raaka materiaali, voimalaitos, ala, teollisuuslaitos
Public Domain
Asiaankuuluvat rojaltivapaat valokuvat
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