Health Hazard Evaluation Determination Report No. 77-15-421, Leeds and Northrup Corporation Expendable Devices Division, Ellwood City, Pennsylvania

摘要

A health hazard evaluation was conducted on December 13-15 at the Leeds & Northrup Corporation, Expendable Devices Division, Ellwood City, Pennsylvania, a facility engaged in the manufacture of carbon analysis and temperature determination devices. The airborne concentrations of formaldehyde (50000) and ammonia (7429905) were low enough to prevent respiratory injury but not the subjective upper eye and respiratory irritation reported by some of the workers. Workers involved in cement mixing presented dermatitis which could be minimized by use of protective equipment and other measures. The operator of a large mixer was exposed to potentially toxic levels of respirable crystalline silica (7631869). Recommendations are made for measures that can help minimize dermal and respiratory effects apparent to the manufacturing processes evaluated.