This treasure list is found in the treasures.trs file in top level directory of the arch package.
It includes the lists standard_old and human_parts .
The only list, that includes it, is the list throw_stnd .

treasure standard
  arch skill_use_magic_item
  more
  list standard_old
  more
# non-humaniods are unlikely to have torches!
  arch torch_unlit
    nrof 3
    chance 1
  more
  list human_parts
    chance 20
end