The mining job on Graal Kingdoms has been improved: instead of just picking rocks using the pick axe, you can now also use mine carts to transport rocks to a stone mill and destroy them faster there to get the iron and gold that are hidden in the rocks.Near the stone mills you can craft those mining carts. If you place the cart near a railroad then it will be protected against being pushed or picked up by other players. A mining cart can hold up to 80 stones.