- William B HoltsbaumNACE Corrosion TechnologistFebruary 20, 2026183960Cert No.6509

William B Holtsbaum
NACE Corrosion Technologist
February 20, 2026
183960
Cert No.6509
William B Holtsbaum
The person to whom this has been issued has fulfilled the examination and experience requirements of AMPP to attain the status of NACE Corrosion Technologist.
NOTE: This recognition will expire on the date noted. It is the responsibility of the cardholder to notify AMPP of changes to address or other contact information. Failure to receive notices from AMPP does not relieve the cardholder of the responsibility to contact AMPP to complete the renewal process.
Issued on
September 12, 2002
Expires on
February 20, 2026