What is OSHA Permissible Exposure Limit (PEL)

The Permissible Exposure Limits (PELs) are limits for occupational exposure issued by the United States Occupational Safety and Health Administration (OSHA). The PEL or OSHA PEL is a legal, regulatory limit on the quantity or concentration an employee can be exposed to, such as Respirable Crystalline Silica (RCS) in the ...
Read More

Questions about Silica in The Workplace

Exposure to silica dust - respirable crystalline silica (RCS) - is harmful and can lead to severe to lung disease. It is known as a significant contributor to lung cancer. Identifying work processes that produce RCS and having workers wear a respirator during those times are critical for minimizing prolonged ...
Read More
X-ray Diffractor (XRD) in the Advanced Materials Laboratory at the Center for Advanced Energy Studies (CAES).

Analyzing an Air Sample: What is involved?

In April 2016, the Occupational Safety and Health Administration (OSHA) passed brand-new guideline limits to protect workers from exposure to Respirable Crystalline Silica (RCS) in the work environment. These guidelines reinforced the need for industrial air sampling in the workplace.  Nanozen invented the DustCount 8899 to create a much more effective ...
Read More

Breathe Deep: The History of Respirators

Throughout history, individuals have needed to deal with air pollution as well as smog, owing to excessive coal use in the residence as well as manufacturing, air pollution from mining and increased emissions from industrial processes. Since the 14th Century, London has been affected by thick smog, which Londoners refer ...
Read More

How to Effectively Sample Silica in the Workplace

Exposure to silica dust is a severe hazard in rock mining, whether it is a granite vein in coal, copper, diamond mine, or other rock cutting activities (i.e., granite cutting, stone dust). Because of hydraulic fracturing, silica can also be a problem in the oil and gas industry. Lung cancer, ...
Read More
Cement Worker with Saw

OSHA Publishes Silica FAQ

Since the brand-new OSHA policy for work direct exposure to respirable crystalline silica went into effect in 2017, OSHA has been attempting to clarify any questions regarding compliance. The crystalline silica standard from OSHA has been controversial ever since its inception on June 23, 2016. Adhering to the new standard ...
Read More