Wisconsin
Department of Safety and Professional Services
Clayton, Derek
Professional Geologist
License number
1165-13
Date granted
08/03/2000
Date expires
07/31/2012
Class
Professional Geologist
Status
wisconsinlicensing.org
ID 12620129
LAST UPDATED 2026-05-31 10:44:34 UTC
LAST UPDATED 2026-05-31 10:44:34 UTC
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