
A very promising expansion of COI.
And now a few warnings and suggestions:

As you can see from the picture, the miners are digging the sand like crazy and the dug sand is nowhere to be found. Other raw materials are no problem.
If the recipe in Stone Furnace is to make iron, which is logical. What is steel looking for in the raw materials needed for construction there?

For buildings:
Stone furnace - cancel steel without replacement,
Makeshift housing - swapping steel for rock,
Labor depot - swap steel for iron and add clay and rock,
Manual assembly - replace steel with iron,
Lighthouse - add 2 units of iron.
For Chart hauler - replace steel with iron and cancel rubber without replacement.
It would be good if you accepted my suggestions. It will seem consistent and believable..
Simply beautiful.
The settlement is thriving. 🏆