The ore mine is a mine in the Heroes of Might and Magic games that gives the kingdom ore each day. The hero gains two pieces of ore each day they control the mine. Ore mines are a complete necessity in every game, as ore is one of the most used resources, along with wood.
In the later Heroes games (Heroes of Might and Magic III onwards), the structure is renamed the ore pit. Also, the hero can place creatures in mines to defend their resource-producing buildings from other heroes that may try to claim them.