Ivy Mike
Peace won't come to us, Doctor. We must go towards peace.

Ivy Mike is a thermonuclear (hydrogen) bomb with the second highest blast radius in Nuclear Tech Mod, second only to the Tsar Bomba, with an effective blast radius of 250 blocks.
Background
It was detonated at 7:15 p.m. on October 31 (world time). It produced 10.4 megatons, a force roughly 650 times greater than that of the weapons developed by Robert Oppenheimer during World War II. Along with the Ivy King nuclear test (0.5 Mt), it was part of Operation Ivy.
As it is a thermonuclear device, it is a two-stage device consisting of the fission and fusion stage. The device will still operate without the fusion stage, however, it will effectively just be a more expensive Fat Man without it.
Crafting
The Ivy Mike itself is crafted in an assembly machine from the following recipe:
Fission Components
To arm the device for fission, 4 bundles of implosion propellant are required:
And a plutonium core, assembled like so:
Fusion Components
To achieve full fusion and vastly improve the yield, three more parts need to be assembled. A uranium coated deuterium tank, assembled as follows:
A deuterium tank:
And finally, a deuterium cooling unit
Use

To construct and arm the bomb, it should be placed in the intended zone. Then, place the required items in the matching slots, as shown in the diagram to the right. Once the bomb has been constructed, a detonator can be used to trigger the bomb.
An Ivy Mike kit is also available in creative mode that gives the player all of the components and a hazmat suit.