{
  "values": [
    "tfmg:steel_casing",
    "tfmg:heavy_machinery_casing",
    "tfmg:formwork_block",
    "tfmg:copper_encased_steel_pipe",
    "tfmg:cast_iron_distillation_output",
    "tfmg:steel_distillation_output",
    "tfmg:machine_input",
    "tfmg:pumpjack_crank"
  ]
}