FBI Handbook of Crime Scene Forensics Read Online Free PDF Page B

clean, airtight plastic container without formalin or formaldehyde. Place teeth and bone samples in clean paper or an envelope with sealed corners.
Freeze the evidence, place in Styrofoam containers, and ship overnight on dry ice.
    Preserving DNA Evidence—Long-Term Storage
Blood/saliva (reference samples).
Refrigerate, do not freeze, liquid blood samples.
Store refrigerated, frozen (if dried), or at room temperature, away from light and humidity.
Blood/semen (evidence samples).
Store refrigerated, frozen, or at room temperature, away from light and humidity.
DNA tubes/tissue samples, etc.
Store refrigerated or frozen, if possible.
It is recommended that these samples be stored in a refrigerator/freezer and isolated from evidence that has not been examined.
    Electronic Device Examinations
    Commercial Electronic Devices
    Examinations of commercial electronic devices—including personal digital assistants (PDAs), cellular telephones, pagers, and global positioning systems (GPSs)—can extract user- or owner-entered data and other information. In some cases, it is necessary to disassemble the devices during examination.
    Interception-of-Communication Devices
    Interception-of-communication (IOC) devices are used to unlawfully intercept oral or wire communications. The devices consist of radiofrequency transmitters and receivers. Examinations are conducted to identify operating characteristics (frequency of operation, range of operation). In some cases, it is necessary to disassemble the devices during examination.
    Other Electronic Devices and Circuits
    Examinations on other electronic devices and circuitry—including facsimile machines, stun guns, and bomb detonators—can extract user- or owner-entered data, stored data, and other information. The examinations can identify operating characteristics and modifications made to the devices. In some cases, it is necessary to disassemble the devices and/or circuits during examination.
    Questions concerning electronic device examinations should be directed to 703-985-2400. Questions concerning shipping electronic device evidence should be directed to 703-985-1388. FBI entities may refer to the Operational Technology Division/Digital Evidence Section web page on the FBI intranet for additional information regarding evidence submission.
    Follow the evidence submission directions, including Requesting Evidence Examinations and Packaging and Shipping Evidence .
Label the outer container “FRAGILE, SENSITIVE ELECTRONIC EQUIPMENT” and “KEEP AWAY FROM MAGNETS OR MAGNETIC FIELDS.”
Address the outer container as follows:
    FORENSIC PROGRAM
BUILDING 27958A
ENGINEERING RESEARCH FACILITY
FEDERAL BUREAU OF INVESTIGATION
QUANTICO VA 22135
    Explosives Examinations
    Evidence resulting from an apparent explosion and/or recovery of an explosive device can be examined. Examinations are based on the premise that components and accessories used to construct the devices survive the explosion, although disfigured. The examinations can accomplish the following:
Identify the components used to construct the device, such as switches, batteries, detonators, tapes, wires, and fusing systems.
Identify the explosive main charge.
Determine the construction characteristics.
Determine the manner in which the device functioned or was designed or intended to function.
Determine the specific assembly techniques employed by the builder(s) of the device.
Preserve the trace evidence potentially present in the devices so that it is not destroyed or damaged during the examinations.
    Call the Laboratory at 703-632-7626 each time an explosive device or a related explosive item needs to be shipped. The communication accompanying the evidence must reference the telephone conversation accepting the evidence.
    Questions concerning explosives evidence should be directed to 703-632-7626.
    Explosives are hazardous materials and must be handled only by qualified public safety personnel, military explosives ordnance diposal