New and returning workers die disproportionately in their first days in the heat. Learn the physiology of acclimatization, the NIOSH 20 percent ramp schedule, how adaptation decays, and how to
Decades after peak use, asbestos remains embedded in the building stock and continues to cause mesothelioma. This post examines management-in-place, abatement controls, and the regulatory framework governing this Group 1
Climate change is intensifying and spreading the hazards industrial hygiene already manages. A horizon-scanning view drawing on the ILO 2024 heat report, the Lancet Countdown, and NIOSH on how practice
A rigorous respiratory protection program depends on more than respirator selection. This post examines the regulatory architecture of 29 CFR 1910.134 and the science of quantitative fit testing.
Welding fume is now a confirmed Group 1 carcinogen, and its manganese content drives a parkinsonian syndrome that progresses even at exposures below regulatory limits. This post reviews the exposure
Solar ultraviolet radiation is the most prevalent occupational carcinogen by exposed population. This post examines UV dosimetry, exposure limits, skin-cancer epidemiology, and control strategies for outdoor workers.
Workers do not respond to hazards the way data alone would predict, because perception is shaped by trust, control, and dread. This post explores Sandman’s risk equals hazard plus outrage
OSHA’s 2024 proposed heat rule and California’s 8 CCR 3395 converge on the same elements: water, rest, shade, acclimatization, and a written plan. Here is how to build a heat
Black lung was nearly eradicated, yet progressive massive fibrosis has resurged among Appalachian coal miners. This post examines respirable coal mine dust, the role of silica, MSHA’s 2024 silica rule,
A design-oriented review of local exhaust ventilation, covering hood capture velocity, duct and fan selection, air cleaning, and the standards and testing that verify real-world performance.
