He's not a mudslide victim because he was buried in a metal box.
https://identifyus.org/cases/2294
http://www.doenetwork.org/hot/hotcase1188.html
Unidentified White Male
* The victim was discovered on July 7, 2008 in Devore, San Bernardino County, California
* Estimated Date of Death: 10 Years - 20 Years (1988 - 1998)
* State of Remains: Complete Skeleton
Vital Statistics
* Estimated age: 25 - 45 years old (estimated date of birth between 1955 and 1973).
* Approximate Height and Weight 5'6" - 5'9"
* Clothing: Black denim "Union Bay" pants with distinctive buttons and white and blue "Converse" high top shoes (ConWave: manufactured 1990).
* Fingerprints: Not Available
* Dentals: Dental chart and X-rays available at CA DOJ-MUPS (missing.persons@doj.ca.gov) or Coroner Division. Fillings and Crowns present.
* DNA: Available. (CODIS reference #BK-08-001006).
Case History
The victim was found on July 7, 2008 buried in a metal box in a backyard along a remote desert road near Interstate 15 and Cajon Pass in Devore, California.
Investigators estimate the remains may have been buried for more than 15 years, because the homeowner had been living there since 1993.
Identity can only be established with dental X-rays or DNA.