Saltpetre Problem

Disclaimer: Although I am criticizing the game, It is by far my favorite strategy game and I don't mean to come off as hateful. 

It is way too often that I suffer from this problem in humankind. I am enjoying the game, going through the eras, I have strategically claimed territories with mystery resources on them, as to plan out late game scenarios. The only thing is, when I reach the Early modern era, whether I'm first or last, it is a crapshoot on whether I have gunpowder or Saltpetre anywhere in my territory, let alone my continent. Even if I have access to one Saltpetre, I don't have the second needed to create powerful ships or musketeers. I eventually get steamrolled or locked in place by other players or AI and my empire is stunted for the rest of the game.

I don't think that getting rid of the unknown resource icon is smart. One, I like that aspect of the game. Two, this problem seems to only exist with Saltpetre. I feel that the problem exists because of the unknown resource attribute and the relatively small amount of industry needed to create troops with guns.

This may be stupid but i think that increasing the amount of industry it takes to make these troops and ships or reducing the amount to make troops such as halberds would mollify the issue. 

honestly, I don't feel like i have a great solution but this does seem to be a problem that needs to be fixed.