Strategic resources are counted by levels. The more resources unit you control, the higher level you have in that resource, and character activities will not reduce resource level. Maximum level of resources can be had by mining is 7 no matter how many unit you can mine. Fuel Store aside from going to war to disrupt the trade.put no limit to level of resource level from going up to 7 The problem is, once you trade a level of resource away, say Fuel, the only way to get to 7 is
The only way to lost resources is by exchanging resources through diplomacy or actually losing resource supply.
When the game begins, there are five resources:
After researching, two new resources will show up. Then their mines can be researched, and they are required for advanced productions.
After terraformation progress at 48%, AL:Advanced Mining (Tech) is enabled. Research this to allow building advanced mine facilities on top of existing mines that doubles production.