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Rockville, MD 20850

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Training Courses

AAOHN: Respiratory Protection Education Program for Healthcare Workers - Available at No Charge.

Online Learning



Commercial Driver Medical Examiner Online Training via ACOEM




Spirometry, Spirometry Refresher, Respirator Fit-Testing Training Courses


Online Courses:

Spirometry Refresher

Spirometry Training


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Dr. Mary Townsend



CAOHC Certification
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The DOT Examiner's Most Trusted Resource! For a full listing of our books visit OEM Press.

Medlock Consulting is a physician search firm dedicated to locating, evaluating, and facilitating the placement of quality physicians in superior environments. To us, this means never taking shortcuts and always maintaining professional and personal integrity.


Nyla Medlock

Medlock Consulting

Phone 806-744-5250

Cell 806-239-NYLA(6952)

"Defining the Future of Physicians Globally"

Email Nyla


International Safety Systems, Inc. (Global EHS Service Provider)
New: Webinar Brochure



Occupational Health Connections, Inc. (OHC) is a distinguished leader in occupational and employee health staffing and recruitment. For job opportunities, please visit: OHC website



Visit Relief EHS, LLC
Relief EHS is uniquely qualified to provide answers to your environmental health & safety (EHS) questions, make it easier for your business to comply with regulations, and help you achieve EHS goals while minimizing costs and potential liability.



PKB Consulting, LLC
Patricia K. Bertsche, PhD, FAAOHN - Occupational Health & Wellness Consultant, Leader in Global Occupational Health Program Development & Evaluation - Email Pat



CHR Newsletter - May 31, 2018

The quality of CHR's services and the services provided by the clinics in our network is very important. Thank you for your feedback and support. Our clients say it best...

"I truly love working with CHR and the level of expertise you give to us for support."

Health Tip: Stay Fit at Work

Sitting for long hours at a desk can lead to poor posture, lower-back pain and increased risk for cardiovascular disease and diabetes. The American Council on Exercise suggests how to combat the negative effects of too much sitting.

Connecting Millennial Workers To a Future Promising Enhanced Safety

Two forces are at work shaping the future of workplace safety: millennials and connectivity. This article looks at developments igniting this twin dynamic, including a few trends defining the Connected Worker profile that Millennials are fitting into.

Stretch It Out at Your Desk

If you work in an office, chances are good that you sit for a large part of the day. This puts you at risk for ergonomics-related problems. You can help prevent the adverse health effects of sitting by starting a stretching routine. Here are a number of stretches you can do at your workstation.

Flexibility and Hazard Knowledge Needed for Disaster Responders

Safety professionals discussed their experiences in emergency response during and after hurricanes Harvey and Maria in Houston, TX and Puerto Rico at the 2018 American Industrial Hygiene Conference & Expo on May 22.

Develop a Heat-related Injury and Illness Prevention Program

Workplace safety is a group effort and, when it comes to safety and preventing accidents, planning ahead is key. Implementing a Heat Injury and Illness Prevention Program (IIPP) will help identify hazards in the workplace and protect all employees.

Welcoming Progress for Poultry Workers in the U.S.

Working in a poultry plant is tough. But it just may be getting better - finally. This past year brought some light to the darkness (and the cold, noise, and wet) for poultry plant workers, despite the dismantling of federal regulations meant to protect workers.

Welding Safety: What's New and What You Should Know

Welding remains a high-risk occupation with welding fumes linked with Parkinson Disease and cancer. So now is a great time to talk about tips for welding safety equipment and, particularly, respiratory protection while welding.

DOT Unveils Participants in Commercial Drone Safety Program

The Department of Transportation on May 9 announced the participants in a pilot program intended to promote the safe commercial operation and integration of drones in agriculture, commerce, emergency management, human transportation and other sectors.

Researchers Identify Spike in Severe Black Lung Disease Among Former U.S. Coal Miners

The number of cases of progressive massive fibrosis, the most severe form of black lung disease, has been increasing dramatically among coal workers and especially younger workers in central Appalachia. These new findings represent the first-ever documentation of this spike.

Better Respiratory Protection Needed for Road and Bridge Workers

Workers engaged in constructing or repairing roads and bridges are often not being adequately protected against respiratory hazards, including silica and lead, according to a poster presentation at the AIHce EXP 2018 conference.

Safety Labels vs Signs: What's the Difference?

The accurate interpretation of safety signs is crucial to prevent injuries and save lives. Click through for factors that will assist you to determine whether a sign or label will be the best choice for your needs.

Occupational Health Research Round-up: May 2018

Stories include hand hygiene and asthmas control, big health benefits for small pay increases, rewards for healthy lifestyles, and respiratory risks of working with 3D printers.

Upcoming Conferences

  • DAOHN, (postponed due to weather)
  • ASSE Safety 2018, June 3-5, 2018
  • MAOHN, Nov. 1-2, 2018
  • NECOEM/MaAOHN, Nov. 29-30, 2018
  • More to come; Stay tuned...

Job Openings

Occupational Health Triage Call Center Lead Nurse (Night Shift Preferred)

CHR is seeking an experienced Occupational Health Registered Nurse to help establish and lead a telephone triage call center. For further information, please contact

WBENC-Certified Women's Business Enterprise

Email Rhett Suhre for More Information.

CHR is Celebrating 31 Years!

CHR is a TRAC-Certified Vendor
Learn more about TRAC

Health and Safety Works, LLC

Health and Safety Works, LLC provides training, consulting, and research services in support of Occupational Health (OSHA), Transportation Health (FMCSA) and Health and Wellness. Read more about Health and Safety Works or email HSW Founder and CEO, Elaine M. Papp RN, MSN, CM, COHN-S FAAOHN.