Coal mine - Oranje Nassau Mines - Heerlen
Coal stove - Coal kit - Order list
Salt tower - Hengelo
Stone coal - Miners lamp - Groningen
Coal stove
S.H.V. - Coal Trade Association - Utrecht
Coal - Miners - Ovoids - Eygelshoven
Coal mine - State mine - Cooling towers - Treebeek
Coal mine - State mine - Cooling towers - Heerlen
