Health hazard evaluation determination report 77-56-467, Johns-Manville Products Corporation, Pittsburg, California

Technical Report · Wed Feb 01 04:00:00 EST 1978

OSTI ID:5609411

Okawa, M T; Apol, A G

An investigations was made to determine whether fibrous glass used in the production of asphalt shingles is toxic in the concentrations used. For purposes of completeness, environmental evaluations of worker exposure to some of the other materials in the workplace such as asbestos crystalline silica formaldehyde and asphalt (petroleum) were made. The methods for the evaluation of the work environment varied depending upon the substance being sampled. No medical investigation was made. Employees working in and around the shingle manufacturing line are not exposed to excessive levels of fibrous glass. The slateman is exposed to potentially toxic levels of dust containing crystalline silica. Employees entering the saturator are exposed to potentially high levels of benz(a)pyrene. Employees exposures to asphalt fumes could not be adequately characterized to make a definite conclusion concerning toxicity with the currently available sampling and analytical techniques. Employees' exposures to formaldehyde, aromatic hydrocarbons, and total aliphatic hydrocarbons are not toxic.

• Research Organization: National Inst. for Occupational Safety and Health, Cincinnati, OH (USA)
• OSTI ID: 5609411
• Report Number(s): PB-291657
• Country of Publication: United States
• Language: English

Related Subjects

560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
ALDEHYDES
AROMATICS
ASPHALTS
BITUMENS
CALIFORNIA
FIBERGLASS
FORMALDEHYDE
HAZARDOUS MATERIALS
HYDROCARBONS
INDUSTRIAL MEDICINE
INSPECTION
MEDICINE
NORTH AMERICA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
POLLUTION
POLYCYCLIC AROMATIC HYDROCARBONS
SAMPLING
STANDARDS
TAR
TOXICITY
USA
WESTERN REGION