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Cashins & Associates Blog

Robert Cashins

Recent Posts

Small Exhaled Airborne SARS-CoV-2 Particles and Infection

Posted by Robert Cashins on Thu, Aug, 06, 2020 @ 08:08 AM

One of the most common concerns produced by the SARS-CoV-2 pandemic is the ability of airborne particles (with a diameter <30 microns) to cause an infection. It has been widely debated whether these particles pose a significant risk, especially in enclosed spaces.

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Topics: Coronavirus

Return To Work - Localized General Exhaust Ventilation and COVID-19

Posted by Robert Cashins on Tue, Jun, 09, 2020 @ 13:06 PM

People are concerned about returning to work in an environment that may expose them to the Coronavirus. To minimize their concern, companies are considering a variety of changes that will potentially reduce the spread of the virus. Inhalation of droplets from coughing or sneezing is thought to be the major route of exposure. Social distancing can alleviate the exposure to large droplets (>5 microns) and the inhalation of those large droplets. Cloth masks and surgical masks provide limited if any protection.

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Topics: exhaust ventilation, Coronavirus

AIRBORNE TRANSMISSION OF CORONAVIRUS

Posted by Robert Cashins on Fri, Apr, 24, 2020 @ 11:04 AM

The airborne transmission of viable small droplets and droplet nuclei well beyond 6’ has not been discussed as much as social distancing and hazards associated with sneezing and coughing. There are frequent reports of Covid 19 cases or clusters of cases where the source was not known. Asymptomatic people breathing/talking are likely one source that must be considered. They unknowingly release fine particles as liquid droplets or dried droplet nuclei. Those particles travel great distances and can cause infection if inhaled.

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Topics: Coronavirus

Coronavirus - Just the Facts!

Posted by Robert Cashins on Thu, Mar, 12, 2020 @ 10:03 AM

The SARS-CoV-2 virus which causes COVID-19 disease has already had a profound impact on how we live our daily lives. What is not clear is how things will progress in the future and what impact it will have on our daily lives. The World Health Organization has designated the outbreak as a pandemic which will likely heighten the general public’s concern.

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Topics: viruses

Industrial Hygiene - Silica Exposure, OSHA Regulations and Health

Posted by Robert Cashins on Fri, Jan, 24, 2014 @ 10:01 AM

A report recently published in CA Cancer Journal Titled “Silica: A Lung Carcinogen” highlights the latest toxicity information relative to silica and lung cancer. In thinking about silica, its toxicity, and OSHA’s disgraceful regulatory history also brings to mind the many other contaminants that workers are being exposed to that either do not have exposure limits or have inadequate limits.

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Topics: health & safety, industrial hygiene, OSHA, Certified Industrial Hygienist

Cummulative Risk Assessment and Industrial Hygiene Training

Posted by Robert Cashins on Mon, Oct, 28, 2013 @ 15:10 PM

EPA refers to  Cumulative Risk Assessment(CRA) as the analysis, characterization, and possible quantification of combined risks to health or the environment posed by multiple agents or stressors. As the name implies CRA looks at the sum of risks associated with various stressors not just the individual compound of interest. It seems very complicated and is just starting to be used. 

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Topics: industrial hygiene, occupational health, EPA, Hazard Communication, training, risk assessment

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