The Hero's Path

At the same time, the non-functional "Collect Resources" button is present....

If it is stated that the daily income is greater than zero, then the resources will appear at the beginning of a new day. It's a kind of hardcore – periodically checking in on your mine and collecting the accumulated resources. This is quite profitable in the long run, but more time-consuming than simply selling the mine to someone. The mine changes to green, not to the player, so that resources do not accumulate in the player's account in the standard way.