Reinforced Stone Miner
This tier produces 25% more gold and has 25 more health than
the 
Stone Miner. Its wood and stone costs are
2 times as high, and building it also costs gold.
Mechanics
Section titled “Mechanics”Like other miners, it adds gold directly to your resources while you are alive. Build it near a gold mine for 50% more income. The bonus is set when you place the miner, does not stack from several mines, and remains after the nearby mine is destroyed. A mine that appears later does not boost a miner placed without the bonus.
Your 12-miner structure limit is shared across all tiers. Your miners stay in the world when you die and still count toward that limit, but production stops until respawn. The missed income is not paid back. Leaving the server removes your miners.
Unlocking
Section titled “Unlocking”In the miner branch of the structure trees, unlock this tier after the Stone Miner by spending 1 structure point from your upgrade points from level 10. The choice replaces the Stone Miner build item without spending resources. Placed miners keep their original health and income. To replace a placed miner, destroy it and pay the full construction cost for its replacement.