Rockwell Laser Industries
Laser Safety Products, Training and Consulting at Rockwell Laser Industries
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Meet the RLI Staff

William J. Ertle, CLSO, CMLSO, President
Mr. Ertle has been associated with Rockwell Laser Industries (RLI) since 1989 where he now holds the position of President. Bill has provided in-depth lectures and training presentations for numerous RLI Training Institute courses, industry conferences, as well as presentations for events at Sandia National Laboratories, Los Alamos National Laboratories, The Fabricators and Manufacturers Association, IEEE/LEOS, OPTCON, ALAC, Bay Area Laser Safety Officers (BALSO) and the International Laser Safety Conference (ILSC). Bill has also authored and co-authored several laser safety articles.

In addition to his training-based activities, he routinely provides RLI clients with product specific technical information on laser safety eyewear, windows, barriers, interlocks and other related laser safety equipment.

Bill is the Chairman of the ANSI Z136 Technical Standards Committee on Control Measures and Training (TSC-4) and a voting member of the Accredited Standards Committee, the main Z136 committee. He is an active member of the Laser Institute of America (LIA) and a former member of their Board of Directors as well as a member of the American Society for Lasers in Medicine and Surgery (ASLMS). He is a member of the Canadian Standards Association (CSA) Technical Committee on Laser Safety and is a Certified Laser Safety Officer by the Board of Laser Safety. Bill is a graduate of Xavier University, Cincinnati, OH.
Thomas Fraser, Course Lecturer

Tom retired from the Department of the Navy in August 2024 with 34 years of federal service. The last half of his civilian career was as a member of the Lead Naval Technical Laboratory for Laser Safety at the Naval Surface Warfare Center Dahlgren Division, performing laser hazard analyses/evaluations and teaching the Technical Laser Safety Officer courses.

Tom is also a retired Staff Non-Commissioned Officer from the United Stated Marine Corps Reserves, with the military occupation specialty of Infantry Small Unit Leader (0369). He currently acts as an independent member of ANSI Z136 Technical Subcommittee for Hazard Evaluation (TSC-2) and Standards Subcommittee for Measurements (SSC-4).

Tom is an Electrical Engineer and graduate of Tennessee Technological University, Cookeville, TN.

Nancy Mauro, Executive Assistant

Nancy joined the staff at the end of 2014 and is the Executive Assistant to our President, Bill Ertle. In addition, she oversees daily office operational functions, manages consulting projects, and coordinates special corporate functions.

Nancy has worked as an executive assistant for over 25 years in both the Foodservice Industry and the Pharmaceutical Industry.

Benjamin A. Rockwell, Ph.D., Principal Laser Safety Science Lead
Benjamin Rockwell serves as a consulting scientist and lecturer for RLI. He graduated in 1986 with a B.S. in Physics from Central Missouri State University and was awarded his Ph.D. in 1991 from the University of Missouri at Columbia. He joined the Optical Radiation Division of the Air Force Armstrong Laboratory, Brooks Air Force Base where he has conducted research specializing in the bioeffects of ultrashort laser pulse interactions. Ben is currently serving on the executive committee of the ANSI Z136 committee.
Mary F. Zimmerman, Standards Specialist, Test Engineer, and Lecturer

Mary F. Zimmerman received her B.S. in electrical engineering in 1997 from Johns Hopkins University and her M.S. in electrical engineering in 1999 from the University of Maryland, College Park, Maryland.

While attending the University of Maryland, Mary worked as an electro-optics research assistant jointly for the University of Maryland and the Army Research Laboratory. In 2000, Mary accepted a position at the Naval Surface Warfare Center, Dahlgren Division (NSWCDD), Virginia as a System Safety Engineer. She began working for the Laser Safety Program in 2001 as a Laser Safety Specialist. Her duties included performing laser safety evaluations for laser systems to be fielded for the Navy and Marine Corps and presenting her finding and recommendations to the Navy Laser Safety Review Board. She has worked with the Marine Corps as a subject matter expert for laser designator and rangefinder source selections and was tasked by MARCORSYSCOM Armor and Fire Support Systems to perform a rapid response System Tradeoff Study in support of the Joint Effects Targeting System. In 2006, Mary began working for the Directed Energy Technology Office on high energy lasers (HEL). Part of her responsibilities included addressing the unique safety issues presented by outdoor HEL testing and was an integral part of the first outdoor HEL test performed on NSWCDD. She worked on designing and establishing requirements for the laser housing and backstop, worked with range control, the safety and environmental office, and public works to facilitate the testing and prepared the range documentation and procedures for the testing while serving as the group’s laser safety specialist, providing required safety training and keeping the group abreast of safety requirements. During the testing, her duties would range from Test Setup Engineer to Test Director.

Mary has presented at the International Laser Safety Conference and Lasers on the Modern Battlefield Conference. She has served as a member of the Navy Laser Safety Review Board. She served as the Secretary of the Technical Subcommittee (TSC1) on Laser Bioeffects and Medical Surveillance of the American National Standards Institute’s (ANSI), Accredited Standards Committee Z136 (ASC Z136). She has been a contributing member of the ANSI Z136.1 Subcommittee responsible for the Standard for Safe Use of Lasers and the Z136.4 Subcommittee responsible for the Recommended Practice for Laser Safety Measurements for Hazard Evaluation and Classification. Mary has worked on the International Electrotechnical Commission (IEC) Technical Committee 76 in several Working Groups. This committee works on international standards for the safe use of laser products.

Sheldon A. Zimmerman, Course Lecturer
Mr. Zimmerman is an internationally recognized expert in Laser Safety currently managing the Laser System Safety Technical Direction Agent Program at a Navy laboratory. He is convener of the IEC TC 76 Working Group 3 on Laser Radiation Measurements and the chairman ANSI Z136.4 Subcommittee for the American National Standard Recommended Practice for Laser Safety Measurements, Hazard Evaluation, and Instrumentation.

Mr. Zimmerman has worked on the NATO STANAG 3606 committee for range laser safety and with the Society of Automotive Engineers (SAE) G-10T Subcommittee on Laser Safety to help develop the Federal Aviation Administration Order 7400.2D, which provides guidance on laser exposure levels near airports.

Mr. Zimmerman is a Fellow of LIA, a member of the LIA Board of Directors, and has been published in the Journal of Laser Applications and Proceedings of International Laser Safety Conferences. A graduate of the University of Wyoming, Mr. Zimmerman also holds certifications such as CLSO, Navy Laser Safety Specialist, and Navy Range Laser Safety Specialist.
 

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