In India, the Oraon tribe speak Kuruk or Kurux (kru), a Dravidian language. With more than two million speakers, according to the Ethnologue, it would seem the language is safe.
According to Indian radio site See More Catholic News, however, a tip is underway. A May 9 article relates how social and cultural advancements in conjunction with urban migration have led to Oraon people abandoning their language. As a measure toward saving the language and culture, a meeting was recently held and a new script created, called Tolong Sinki.
According to Google, there are no Websites available that discuss Tolong Sinki, but a collection of stories, basic vocabulary words, and conversations along with recordings may be found at Linguistic Data of Kurux (Kurukh).
Living Languages 