Category: Hydraulic Fracturing

An Ancient Hazard in a 21st Century Workplace: The Power of Partnerships and Collaboration Investigating Respirable Crystalline Silica in Hydraulic Fracturing

  In 2013, NIOSH researchers published exposure assessment results for respirable crystalline silica in oil and gas extraction (OGE) workers performing hydraulic fracturing. The results were noteworthy; a previously unidentified but serious occupational exposure hazard was discovered, and risks were significant‒in some cases, personal breathing zone exposures exceeded 10 times the occupational exposure limits. This Read More >

Posted on by Eric J. Esswein, MSPH, CIH, FAIHA; CAPT Bradley King, PhD, MPH, CIH; and CAPT Ryan Hill, MPH2 Comments

A Physico-chemical and Toxicological Evaluation of Fracking Sand Dusts

  During hydraulic fracturing, or “fracking,” a fluid is pumped under high pressure into a well bore to create fissures in the rock to facilitate the removal of gas. This fracking fluid contains a large number of ingredients, including water, chemical agents, and sand. The manipulation of sand at the well site creates respirable dust Read More >

Posted on by Jeffrey S. Fedan, PhD6 Comments

Preliminary Field Studies on Worker Exposures to Volatile Chemicals during Oil and Gas Extraction Flowback and Production Testing Operations

This blog describes NIOSH evaluations of worker exposures to specific chemicals during oil and gas extraction flowback and production testing activities. These activities occur after well stimulation and are necessary to bring the well into production. Included are descriptions of initial exposure assessments, findings, and recommendations to reduce worker exposures to potential hazards. Further details Read More >

Posted on by Eric J. Esswein, MSPH, CIH, John Snawder, PhD, DABT, Bradley King, MPH, CIH, Michael Breitenstein, BS, and Marissa Alexander-Scott, DVM, MS, MPH.23 Comments

Worker Exposure to Crystalline Silica During Hydraulic Fracturing

Hydraulic fracturing or “fracking”  is the process of injecting large volumes of water, sand, and chemicals into the ground at high pressure to break up shale formation allowing more efficient recovery of oil and gas.  This form of well stimulation has been used since the late 1940s, but has increased substantially over the last 10 Read More >

Posted on by Eric Esswein, MSPH; Max Kiefer, MS; John Snawder, PhD; and Michael Breitenstein, BS 27 Comments