Gold Mine

The Gold Mine in Dungeon Keeper generated gold at a certain rate per hour, which was used to buy certain traps, hire minions, train minions, and upgrade certain rooms.
If the Gold Mine reached the storage capacity, it would not generate any more gold until it was collected.
Gold Mines were not built, but rather, claimed.
==Notes==
*Generated gold over time. The quantity the mine could have ready to collect at a given time was equal to the bonus total gold capacity offered by that mine.
*Entry point for invaders once a Gold Mine had been claimed. As a result, each additional claimed Gold Mine greatly increased the vulnerability of your dungeon, especially to flying units like Ghosts.
*Uncollected gold was more vulnerable to theft.
* Bolstering increased gold production.
*Upgrading Gold Mines was required to reach additional storage required for upgrading certain buildings, especially the Dungeon Heart.
==Upgrades==
Level	Gold Production	Gold Storage	BuildTime	Upgrade Cost(Stone)	ForgoneGold	Break Even Days1	Dungeon Heart Required
1 	400/h 	600 	0m 	150 	0 	0.00 	-
2 	800/h 	1,200 	10m 	400 	67 	0.01 	Level 1
3 	1,200/h 	1,800 	30m 	800 	400 	0.06 	Level 1
4 	1,600/h 	3,000 	1h 	1,600 	1,200 	0.17 	Level 2
5 	2,000/h 	15k 	2h 	3,500 	3,200 	0.42 	Level 3
6 	2,600/h 	30k 	4h 	7,000 	8,000 	0.72 	Level 4
7 	3,200/h 	50k 	8h 	15k 	20,800 	1.78 	Level 5
8 	3,800/h 	100k 	16h 	40k 	51,200 	4.22 	Level 6
9 	4,400/h 	150k 	1d 	80k 	91,200 	7.3 	Level 7
10 	5,000/h 	200k 	1d 12h 	150k 	158,400 	12.5 	Level 8
11 	5,500/h 	250k 	2d 	2.5M 	? 	? 	Level 11
12 	6,500/h 	300k 	2d 12h 	4M 	? 	? 	Level 12
13 	7,500/h 	350k 	3d 	6M 	? 	? 	Level 13
14 	10,000/h 	400k 	4d 	8M 	? 	? 	Level 14
15 	12,500/h 	500k 	5d 	10M 	? 	? 	Level 15
16 	15,000/h 	600k 	6d 	12.5M 	? 	? 	Level 16
17 	17,500/h 	700k 	7d 	15M 	? 	? 	Level 17
18 	20,000/h 	800k 	8d 	17.5M 	? 	? 	Level 18
19 	22,500/h 	900k 	9d 	20M 	? 	? 	Level 19
20 	25,000/h 	1.0M 	10d 	25M 	? 	? 	Level 20
21 	27,500/h 	1.1M 	11d 	30M 	? 	? 	Level 21
22 	30,000/h 	1.2M 	12d 	35M 	? 	? 	Level 22
23 	32,500/h 	1.3M 	13d 	40M 	 	? 	Level 23
24 	35,000/h 	1.4M 	13d 	45M 	? 	? 	Level 24
25 	37,500/h 	1.5M 	13d 	50M 	? 	? 	Level 25
26 	37,500/h 	1.6M 	14d 	51M 	? 	? 	Level 26
27 	37,500/h 	1.7M 	14d 	52M 	? 	? 	Level 27
28 	37,500/h 	1.8M 	16d 	53M 	? 	? 	Level 28
29 	37,500/h 	1.9M 	18d 	54M 	? 	? 	Level 29
30 	37,500/h 	2.0M 	20d 	55M 	? 	? 	Level 30
31 	37,500/h 	2.1M 	21d 	56M 	? 	? 	Level 31
32 	37,500/h 	2.2M 	22d 	57M 	? 	? 	Level 32
33 	37,500/h 	2.3M 	23d 	58M 	? 	? 	Level 33
34 	37,500/h 	2.4M 	24d 	59M 	? 	? 	Level 34
35 	37,500/h 	2.5M 	35d 	60M 	? 	? 	?
1 Break Even Days is how long, from the time you start the upgrade, until you have the same amount of gold as if you didn't do the upgrade.  Simply put, how long until you are making more than you would have by not upgrading.
Note:
* Build Times and derivative values have been updated for content update 8.0 from May 2018.
* Max level is 35
* Rate shown does not include bolstering, guild perks or DK Premium boost.
==References==
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