David Neztsosie rarely visits the gravesite of his two young daughters as visiting the dead is taboo in Navajo culture. He can no longer remember the names of his daughters who were confined to wheelchairs in middle school before passing away from what is believed to be exposure to uranium he brought back from the mines he worked in decades ago. Their condition was known as Navajo Neuropathy, and was likely contracted in utero as their mother was exposed to radiation.