Calamity Mod Wiki
Spent Fuel Container
  • Spent Fuel Container.png
Stack digit 1.png
TypeWeaponCrafting material
Damage50 Rogue
Knockback4.5 (Average)
Critical chance4%
Use time34 Slow
TooltipWar Never Changes
Throws a fuel container with trace amounts of plutonium that causes a nuclear explosion
The explosion does not occur if there are no tiles below it
Stealth strikes leave a lingering irradiated zone after the explosion dissipates
Inflicts DebuffIrradiatedIrradiated
100% chance

Debuff duration5 seconds (Explosion)
10 seconds (Stealth Strike Explosion)
Debuff tooltipYour skin is burning off
RarityRarity Level: 5
Sell 4 Gold Coin.png 80 Silver Coin.png
Projectile created
Sulphuric Nukesplosion
Sulphuric Nukesplosion
Dropped by
Cragmaw Mire1100% (Tier 2)
10% (Tier 3)

The Spent Fuel Container is a Hardmode bomb that drops from the Cragmaw Mire mini boss. When used, a gravity-affected flask is thrown, which erupts into a nuclear explosion on impact and inflicting the Irradiated debuff. The explosion does not occur if no tiles are below it.

Performing a stealth strike with the Spent Fuel Container causes the resulting flask to erupt into a lingering Irradiated explosion that persists after the nuclear explosion disappears and rapidly hits enemies.

Its best modifier is Flawless.


Used in



  • The tooltip of this weapon is a reference to the popular game franchise, Fallout.