D Deck Coal Ports

Regarding the galley coal bunkers starboard and port on D Deck - these were replenished through their own coal ports (which I believe are shown in the drawing) rather than receiving coal in some manner from the supply taken on through the ports further below which fed the boiler room bunkers, correct?
Sounds reasonable. Carrying coal up from below would be very messy. More basically I doubt that the same grade and size of coal would be used.