Negotiations on Halka

An Enterprise landing party comprised of Captain James T. Kirk, Dr. Leonard McCoy, Chief Engineer Montgomery Scott, and Communications Officer Nyota Uhura were on the planet Halka trying to persuade the Halkan Council to allow the United Federation of Planets to mine dilithium crystals on their planet. The Halkan leader, a man named Tharn, told Kirk that, while they found him to be believable, it did not change their overall position and that the Halkan Council could not permit the Federation to mine dilithium crystals on their planet.