gauges HPP Arnstein - control room HPP Arnstein - control room heating Arnstein - control room black stone control room HPP Arnstein - control room DSC08461 x1p DSC08459 x1p the weir the boiler house Caribbean sky towers rectangles night cranes Central Romana train caribbean moon hidden sunrise the blue bear at sunset Aruba arrival approaching Aruba Aruba arrival a new year rises white beach Null - Voltmeter DSC03280 x1p DSC03255 x1p Megawatt HPP Arnstein - control room Nebenschlußregler - Entregungsschalter the electrons' path HFF and a great weekend! control room - 3 control room - 2 control room - 1 DSC03476 x1p power station - section meeting Mr. Francis Turbine hydro power the beauty of analog machines generator logos DSC03328 x1p HPP Arnstein - turbine hall DSC03350 x2p HPP Arnstein - turbine hall blue turbine power