"An ancient mine that's been lost for hundreds of years. Drops ore that doubles in size after 30 seconds, quadrupling the ore's value, no matter what it's at."


The 'Ol Faithful is a Vintage-tier mine. It is the first Vintage-item available publicly and can only be obtained from Mystery Boxes.

After 30 seconds, the ore dropped by this is quadrupled in value and doubled in size. This is an incredibly useful and interesting mechanic, but it causes clogs when a teleporter or an Ore Replicator system is in a setup that uses this mine.

'Ol Faithful is useful from beginning to the pre-end game. Unlike several mines its level, it DOES work on cell furnaces, which makes it useful on Cell Furnaces like Sacrificial Cell, Nature's Grip & Dreamer's Anguish.