Columbia subject headings:
Coal mines and mining--Donets Basin (Ukraine and Russia)--History--21st century.
Coal mines and mining--Ukraine--Donet︠s︡ʹka oblastʹ.
Coal mines and mining--Ukraine--Luhansʹka oblastʹ.
Coal trade--Ukraine--History.
Miners--Ukraine--History.
Harvard subject headings:
Coal mines and mining--Donets Basin (Ukraine and Russia)--History--21st century.
Coal mines and mining--Ukraine--Donet͡sʹka oblastʹ.
Coal mines and mining--Ukraine--Luhansʹka oblastʹ.
Coal trade--Ukraine--History.
Miners--Ukraine--History.
Princeton subject headings: