Health Hazard Evaluations (HHEs)
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All NIOSH Health Hazard Evaluation reports and other NIOSH publications are available at no cost. You can either download a copy of the publication from the website or contact us for a copy. For HHE reports, please send an email to HHERequestHelp@cdc.gov. Information about all other NIOSH publications is available at https://www.cdc.gov/niosh/pubs/.
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Year Published and Title
(1975) Wheeling Pittsburgh Steel Company, Steubenville, Ohio. (Click to open report)
Examination of the working condition at a steel mill (SIC-3325) revealed that dust containing free silica (7631869) is potentially toxic to blast furnace workers and to personnel working in the stockhouse area. This determination is based upon air concentration levels of total dust containing free silica up to four times the Federal Standard for blast furnace workers and up to twenty eight times the Federal Standard for larry car operators in the stockhouse as well as criteria concerning the tox... (Click to show more)
(1974) Banner Iron Works, St. Louis, Missouri. (Click to open report)
Environmental survey and medical evaluation data reveal a potential health hazard from exposure to free silica (7631869) containing dust from cleaning of castings in an iron works. Recommendations include evaluation and redesign of ventilation systems, pre-employment examinations, periodic medical examinations of workers exposed to free silica, including chest x-rays and respiratory function tests, and exclusion of workers with evidence of silicosis or tuberculosis from areas containing free sil... (Click to show more)
(1974) Cupples Company, Rubber Division, Overland, Missouri. (Click to open report)
Evaluation of potential exposure to dust from a parting compound, and to gaseous and particulate matter evolved when inner tubes are removed from vulcanizing molds. The use of enclosures, ventilation, and respirators for the vulcanization area is recommended for the following reasons: the parting compound contains 7% free silica (7631869), relatively high levels of airborne particulate matter, and unknown potential hazards of materials produced during vulcanization.
(1974) Golden Foundry, Columbus, Indiana. (Click to open report)
Environmental and medical evaluations of a foundry manufacturing gray iron (7439896) castings reveal toxic levels of silica (7631869), potentially toxic levels of iron oxide (1317619), and irritant toxicity of ammonia (7664417), formaldehyde (50000), and phenol (108952). Carbon-monoxide (630080), toluene (108883), and xylene (1330207) are not found in toxic concentrations. Recommendations include engineering control of silica levels, including improved ventilation; improved housekeeping; medical... (Click to show more)
(1974) Inland Manufacturing Company, General Motors Corporation, Dayton, Ohio. (Click to open report)
Exposures to coal dust and fly ash during the clean up operation of boilers are found to be below Federal standards for total dust and silica (7631869) levels. No significant symptoms were reported by interviewed workers, and samples of dust contained only 2.2% silica.
(1974) Kaiser Permanente Cement Company, Lucerne Valley, California. (Click to open report)
Free silica (7631869) and iron-oxide (1317619) dust are not considered to be toxic at the concentrations measured at a cement company. Although air concentrations of asbestos (1332214) were found to be below Federal Standards on a time weighted average basis, recommendations are made to protect workers from unnecessary exposure.
(1973) Central Main Power Company, Yarmouth, Maine. (Click to open report)
An environmental and medical evaluation of sulfur-dioxide (7446095), vanadium (7440622) containing dust, and respirable dust containing silica (7631869) at an electric power plant indicates that the gas and the dust are non-toxic at the concentrations found in the plant. Toxic effects of sulfur-dioxide include burning sensations, dryness and pain in the nose and throat accompanied by a dry or productive cough. Symptoms of vanadium poisoning are lung irritation leading to chest tightness, congest... (Click to show more)
(1973) Colorado Brick Company Boulder, Colorado. (Click to open report)
Determination of respirable dust, free silica (7631869), lead (7439921), manganese (7439965), chromium (7440473), iron (7439896), and carbon-monoxide (630080) in 37 personal air samples taken at a brick manufacturing (SIC-3251) facility reveals that only respirable free silica exceeds the OSHA standard. Respirable samples taken at various working locations exceeded the federal standards, with the exception of the maintenance superintendent.
(1973) Fortune Industries, Chelsea, Michigan. (Click to open report)
Environmental samples for airborne silica containing dusts are collected at seven different job areas involved in making abrasive chips, 18 samples for total dust and 16 samples for respirable dust. The substances evaluated include aluminum-oxide (1344281), silicon carbide, iron-oxide (1332372), quartz (14808607), and tremolite (14567738), and the standard concentration is given for each substance. The physical agent evaluated, noise, has a standard level of 90 decibels. The silica (7631869) dus... (Click to show more)
(1973) Reynolds Metals Company, Bauxite, Arkansas. (Click to open report)
Air sampling and medical investigations at an industry manufacturing alumina (1344281) from bauxite indicate that alumina dust and sinter dust are toxic at the concentrations found during the evaluation, while crystalline silica and fluorides in the cryolite area are not toxic in the concentrations measured. Workers in the alumina bagging area noted occasional burning of the nose and had a history of skin irritation, although dermatitis was well controlled by the use of protective creams.
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