Alexander was impressed by the initiative shown by Harun, a vital quality in Alexander's eyes.
So he quickly approved the idea, albeit with a bit of modification, "Follow the plan as you wanted. Just keep the water periodic instead of continuous, like lightly drizzling it."
"Then my lord I will do it every four hours or so," Harun very enthusiastically replied, quite happy at his core idea getting approved.
With that order, Alexander then addressed the issue of coal storage scarcity, simply ordering, "Three days from now, send all the excess coal that you don't need to my estate. I will use them in something else."
Alexander planned to make coal briquettes using them to make salt by boiling seawater.
Harun did not ask Alexander what he needed two thousand (2,000) tons of coals daily for, for he did not really care.