Lumber Empire Crystal Mine: Unlock, Miners and Minecarts

Reach Rebirth 5 to unlock the Crystal Mine. Open the Rebirth menu to check the cash requirement for your next rebirth. For the reset consequences and earlier unlocks, see the Rebirth guide.

Inside the mine, go to the MINERS stall and enter the HIRE circle to hire miners. You can hire up to your current limit; further rebirths increase that limit. At one stage of mine progression, the limit is three miners.

Open MINER UPGRADES in the mine to buy Speed and Carry upgrades. Speed raises the miner's speed stat; Carry increases how many items a miner can carry.

Choose Speed when you want faster movement, or Carry when you want each miner to carry more items at once. The listed stages are individual upgrades, not maximum stats.

Use Cart Size at MINER UPGRADES to increase capacity, or use the Minecart 2 purchase point to add another minecart.

The first listed Cart Size upgrade costs less than another cart and adds two item slots. Choose Minecart 2 when you want an additional vehicle; its purchase does not replace a Cart Size upgrade.

Find the Conveyor purchase point beside the mining production facilities. It costs $7.5 million. Include that cost alongside miner and minecart upgrades when planning your mine budget. For broader investment choices, see money-making upgrade priorities.