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Crime Solvers Central
302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Summary based on the NamUs case record (MP105857) and 1 other source
In the early summer of 1984, a 55-year-old man named Robert 'Bob' Plumb vanished from Clackamas County, Oregon. He was last seen on June 3rd of that year. At the time of his disappearance, Robert was described as a white male, standing at five feet, seven inches tall and weighing approximately 160 pounds. He had blue eyes and his hair was gray or partially gray. Decades have passed since that day, yet the mystery surrounding his disappearance remains, leaving a void of answers for those who may have known him and a case that has grown cold with the passage of time.

The specific circumstances leading to Robert Plumb's disappearance are not publicly known, and there is a profound lack of detailed information available in public records. Official sources and missing person databases offer no narrative as to what the 55-year-old was doing on the day he went missing. Information regarding his last known activities, the clothing he was wearing, or whether he had access to a vehicle has not been made available to the public. The location of his disappearance is broadly listed as Clackamas County, a large and varied geographic area, without further specifics pinpointing a more precise location. This scarcity of detail has made it incredibly difficult for the public to provide any meaningful assistance.

The investigation into Robert Plumb's whereabouts is managed by the Clackamas County Sheriff's Office. Despite the years that have stretched into decades, his case is still listed among Oregon's missing persons. The lack of public information, witnesses, or evidence has left his case unsolved and shrouded in obscurity. The overview of this case is one of a complete and lingering mystery; a man disappeared without a trace, leaving behind only the most basic identifying information and a date that marks the last time he was ever seen.

Last Seen: Jun 3, 1984

Links to Additional Sources (1)

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Possible Unidentified Matches (4)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

79%Possible
John Doe — Portland, Oregon - unidentified case UP9989
John Doe — Portland, Oregon
UP9989 • Found Jan 16, 1998
View case
Sex ✓Male
Age 85%Est. 50–70 vs 55 when missing
Race 100%White
Location 94%34 mi away, same state
TimingFound 14 years after last seen
Height 100%5'6" vs 5'7"
Weight 61%115 lb vs 160 lb
Hair 100%Gray vs Gray
Eyes 100%Blue vs Blue
75%Possible
John Doe — Rainier, Oregon - unidentified case UP13448
John Doe — Rainier, Oregon
UP13448 • Found Oct 20, 1990
View case
Sex ✓Male
Age 100%Est. 40–55 vs 55 when missing
Race 100%White
Location 83%73 mi away, same state
TimingFound 6 years after last seen
Height 84%5'5" vs 5'7"
75%Possible
John Doe — Salem, Oregon - unidentified case UP8447
John Doe — Salem, Oregon
UP8447 • Found Aug 17, 1993
View case
Sex ✓Male
Age 60%Est. 40–70 vs 55 when missing
Race 100%White
Location 90%48 mi away, same state
TimingFound 9 years after last seen
Height 100%5'6" vs 5'7"
Weight 100%160 lb vs 160 lb
Hair 100%Gray vs Gray
Eyes 50%Green vs Blue
75%Possible
John Doe — Portland, Oregon - unidentified case UP11007
John Doe — Portland, Oregon
UP11007 • Found Nov 15, 1987
View case
Sex ✓Male
Age 85%Est. 55–75 vs 55 when missing
Race 100%White
Location 94%34 mi away, same state
TimingFound 3 years after last seen
Height 68%5'10" vs 5'7"

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

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