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Forensic Analysis

Forensic Analysis of the Letter
An Interview with Joseph A. DiZinno

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Joseph A. DiZinno of the FBI LaboratoryMy name is Joseph A. DiZinno of the FBI Laboratory in Washington, D.C.

Since the Leahy letter arrived at USAMRIID, it was examined by personnel from USAMRIID, and the letter was decontaminated to render it safe for subsequent forensic analysis in the FBI Laboratory. The letter was then transported by an FBI Agent from USAMRIID to the FBI Laboratory and immediately forensic analysis begun.

The type of evidence that we attempt to recover from the letter are following our standard protocols: any evidence that would subsequently possibly identify a suspect in this case.

 

 

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Microscopic examination of document.


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Among the analyses performed on the letter and envelope are trace evidence examinations.


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A variety of chemicals are applied to the envelope and letter to develop any latent prints for possible identification.


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Other analyses are performed on the envelope to potentially identify a suspect.


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A variety of chemicals are applied to the envelope and letter to develop any latent prints for possible identification.


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A variety of chemicals is applied to the envelope and letter to develop any latent prints for possible identification.


07.09.10

Famous Cases by Category
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Terrorism
- 9/11 Investigation
- Anthrax/Amerithrax
- Beltway Snipers: Part 1| Part 2
- East African Embassy bombings
- Eric Rudolph: Part 1 | Part 2
- Millennium Plot/Ahmed Ressam
- Oklahoma City bombing
- Palmer Raids
- Pan Am 103 bombing
- Unabomber
- USS Cole Bombing
- Wall Street bombing 1920
- Weather Underground bombings
- World Trade Center bombing 1993
- Fawaz Younis

Counterintelligence/Espionage
- Aldrich Ames
- Alger Hiss
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- Black Tom 1916 bombing
- Duquesne Spy Ring
- Espionage in the Defense Industry
- Hollow Nickel/Rudolph Abel
- Iva Toguri d’Aquino and “Tokyo Rose”
- Maksim Martynov
- Nazi Saboteurs and George Dasch
- ND-98: Case of the Long Island Double Agent
- Pearl Harbor Spy
- Robert Hanssen
- Thwarted Sabotage in Zambia
- Vasilli Zubilin
- Velvalee Dickinson, the “Doll Woman”
- Vonsiatsky Espionage
- Year of the Spy (1985)

Cyber Crime
- Operation Innocent Images

Public Corruption
- ABSCAM
- Operation Greylord
- Operation Illwind
- Tennessee Waltz
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Civil Rights
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Organized Crime/Gangsters
- Al Capone
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- Bonnie and Clyde
- Joe Pistone, Undercover Agent
- John Dillinger
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- Kansas City Massacre/“Pretty Boy” Floyd
- Lester Gillis (“Baby Face” Nelson)
- “Machine Gun” Kelly
- Roger “The Terrible” Touhy
- The Brady Gang
- The Fur Dressers case

White-Collar Crime
- Enron
- Hurricane Katrina Fraud
- Operation Senior Sentinel
- Operation Stolen Dreams

Violent Crime/Major Thefts/Bank Robberies
- Brinks Robbery
- Charles Ross Kidnapping
- D.B. Cooper Hijacking
- Durkin - Murder of an FBI Agent
- Greenlease Kidnapping
- Jack Gilbert Graham
- James Edward Testerman
- John Elgin Johnson
- Jonestown
- Joseph Edward Earlywine
- Judge Vance murder
- Krupp Diamond Theft
- Lindbergh Kidnapping
- Murder and Mayhem in the Osage Hills
- Nussbaum and Wilcoxson
- Patty Hearst
- Richard Floyd McCoy, Jr.
- The Black Dahlia
- Weinberger Kidnapping
- Weyerhaeuser Kidnapping

Ten Most Wanted
- Billie Austin Bryant
- Gerhard Arthur Puff
- Willie Sutton