Mines and Quarries Happiness effects

Solution 1:

I know that some wiki's tend to say that it will decrease your happiness. But in fact, I haven't noticed something like these. Even after many in-game centuries.

It may occur that your happiness will lower, if you build many quarries. But I would think that this could have many causes. If your people had longer walks to the quarry or their houses run out of firewood or food. All this could lower your happiness. It is also common to place the quarry outside the city (due to his nature), as he will leave a whole in the landscape after he's finished. In fact, this building principle can lower your happiness to, as you won't build a tavern, school and maybe even a marketplace near to it.

I normally build a quarry near a market place and near the houses of each worker. Additionally I provide structures like a brewery and things like that. My workers normally tend to have a 5 star rating over many years. Even if they continuously working in the quarry or mine.

As I could see, there is no real or big impact of quarries/mines and happiness. It may be a side effect but in fact I haven't seen any relation to it.