Police say they are trying to establish a detailed timeline on Roxanne Fleming's disappearance from the small community, about 170 kilometres west of Kamloops.
Fleming was 18 when she was last seen on August 23, 1982, the day she went to the Lillooet District Hospital with a broken finger.
Mounties say many years went by before she was reported missing and they have followed up on several leads and possible sightings but what happened to Fleming remains a mystery.
Police say she would now be 50, is First Nations and about five feet four inches tall.
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