This document contains multi-source biographic information on known clandestine laboratory operators within the United States. The publication contains profiles of over 1,350 individuals identified as clandestine laboratory operators within the past 10 years with information obtained from Federal, State, and local case files. The information is intended for use by law enforcement officials to monitor the activities of the operators and to provide actionable and useful intelligence to field investigators. Information found in each profile includes: a photograph of the operator, lab type, arresting agency, correctional facility, criminal identification numbers, and officer remarks that may include gang affiliation, lab sophistication, lab location, and weapons seized. An index of alias names and analysis of the data obtained from the profiles are presented at the end of the report.