[
  {
    "group": "mixed",
    "name": "mix-239",
    "forge_energy": 12400,
    "heat": 57.5,
    "criticality": 94,
    "depletion": 218,
    "efficiency": 105,
    "isotopes": [239, 238]
  },
  {
    "group": "mixed",
    "name": "mix-241",
    "forge_energy": 18720,
    "heat": 97.5,
    "criticality": 80,
    "depletion": 151,
    "efficiency": 115,
    "isotopes": [241, 238]
  }
]