As Kelsey Michaels, Powell appeared in adult films and videos between 2005 and 2008.
A former Playboy cover girl, she has spent the past year 'hiking in the great outdoors and taking some amazing pictures along the way' - and says there's even more to come in 2017.
However, officials believe they are the remains of Brumley.
He is currently lodged in the Pulaski County Detention Center on charges unrelated to the Brumley case, including charges of Cultivating Marijuana and Possession of a Handgun by a Convicted Felon.