Fuel
- Plutonium Dioxide (PuO2)
- Triuranium Octoxide (U3O8)
- Uranium Carbide (UC)
- Uranium Dioxide (UO2)
- Uranium Metal (U-metal)
- Uranium Nitride (UN)
- Uranium Silicide (U3Si2)
Moderator
- Beryllium Carbide (Be2C)
- Beryllium Metal (Be-metal)
- Beryllium Oxide (BeO)
- Calcium Hydride (CaH2)
- FLiBe
- Graphite – Crystalline
- Graphite – Nuclear
- Hydrofluoric Acid (HF)
- Lucite (C5O2H8)
- Paraffinic Oil – Heavy Oil
- Paraffinic Oil – Light Oil
- Paraffin Wax
- Polyethylene (CH2)
- Silicon Carbide (SiC)
- Silicon Dioxide (SiO2)
