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Persephone Furnace

From A Wiki in the Desert
Persephone Furnace
Persephone Furnace
Medium Construction Site
Cost to Build
Aluminum Plate 1
Boards 2,500
Clay Bricks 2,500
Copper Pipe 20
Copper Sheeting 50
Crucibles 15
Cut Stone 250
Fine Glass Pipe 20
Gypsum 500
Iron Bars 40
Iron Strap 40
Lime 200
Pulley 10
Steel Sheeting 150
Thermometer 10
Tin Sheeting 10
Water 2,000


This building becomes available after the Mining 3 technology is learned at a University of Natural Philosophy and Mining 3 (Skill) skill.

Compare all Furnaces.


Built in a Medium Construction Site.



To construct, place a Medium Construction Site at the desired location, then select Projects > Furnaces > Persephone Furnace.

It must be built 65 or more coordinates away from any other Persephone Furnace or Hades Furnace.

  • If there is a Persephone Furnace or Hades Furnace up to 64 coordinates away, you will get a dialog box, "You must locate any water cooled furnace at least 64 coordinates from any other".
  • Has to be 65 or more coords away in both north–south coordinate AND east-west coordinate

It must be built near a water source and away from a road

  • If there is no water nearby, or if you construct too close to a road, you will get a dialog box, "Persephone Furnaces are cooled with water, and must be built near a natural source, and away from paths."
  • A Water icon does not necessarily meet the requirements, and equally you can build where you don't get a water icon.

To prevent attempting to circumvent the distance restriction by constructing two furnaces at the same time or by repositioning it after construction, every time you fire a Persephone Furnace or Hades Furnace a check is made for any furnaces nearby. If there is another furnace 64 coords or less away, ALL affected furnaces will display in the main channel Operating a water cooled furnace too close to another causes it to become unstable. It will not operate when attempting to fire it.

Ecological Impact

Persephone furnaces have been observed creating a small amount of heavy metal pollution upon opening with a radius of 64 coordinates. This was observed with multiple types of metal in the furnace. This differs from prior tale observations, where persephone furnaces were considered to have no ecological impact.


Burns 28 petrol per day (28 ticks per day)

Ore Used Petrol Used Metal Yield Time opened Ore Cost/Metal Metal per Fuel
20,000 9 580 8 hours
20000 28 1340 24 hours (1 day ) 14.93 47.85
20000 56 2000 48 hours (2 days) 10.00 35.71
20000 84 2400 72 hours (3 days) 8.33 28.57
20000 140 2860 120 hours (5 days) 6.99 20.42
20000 224 3200 192 hours (8 days) 6.25 14.28
20000 450 3560 385 hours(16 days and 1 hour) ~5.618 7.9
20,000 1,000 3,780 35 days, 17 hours, 8 minutes, 35 seconds

Lower Ore gives a proportional reduction in metal, but take the same amount of time. 2,000 ore using 28 petroleum yields 134 metal after 1 day.

20,000 Ore will increase metal in steps of 20.