'Ol Faithful

"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.

Overview
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 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.

Trivia

 * Ores from this mine copied by an Ore Replicator will not grow.
 * This mine can be noticed as being similar to a Basic Iron Mine but with miscellaneous gears and pumps on its sides and back. The dropper is so low that it cannot be attached with an Ore Replicator.
 * 'Ol Faithful was the 1st of 8 mines with a special effect. The 2nd being Noobite Mine, the 3rd being Santa's Workshop, the 4th being Wubium Mine, and the 5th being Scorpium Mine, the 6th being Symmetrium Mine, and the 7th being Autumn Breeze, and the 8th being Hades' Fang.
 * There's a glitch with the 'Ol Faithful where it can spit ores that have already grown bigger. This glitch is caused by the dropper being blocked off and the ore happily staying inside Ol' Faithful and then proceed to pop out the top of the dropper whilst the ores are in "Bigger" mode. The best way to do this is to put it next to a Nature's Grip, as the sides of nature's grip will block the ore off, and it will appear on the top of the dropper and slide into the cell furnace.
 * The 'Ol Faithful is one of the 7 mines that doesn't have a "Mine" beside it. The other 6 being Breech Loader, Santa's Workshop, SpookLord-95,000, Spookmaster-5000, Hades' Fang and Autumn Breeze.
 * The 'Ol Faithful can drop ores directly into a Big Bertha.