Evaluation of Magnetic Field Exposure to Office Employees from an Electrical Transformer
On June 24, 2009, NIOSH investigators conducted an HHE in the timekeeping office at the Lebanon Correctional Institution, Lebanon, Ohio, in response to a request received from management. Management was concerned about magnetic field exposures from a transformer installed outside the timekeeping office.
Personal magnetic field monitoring was conducted on five employees (four in the timekeeping office and one in an office across the hall). Area magnetic field measurements were taken at an electrical transformer outside the building, along the exterior and interior walls of the timekeeping office, near electrical devices in the office, and in the front lobby.
Source : http://www.cdc.gov/niosh/hhe/reports/pdfs/2009-0154-3101.pdf