R 408.13366 Foundrymen's goggles; construction.

Rule 3366. A foundryman's goggles shall consist of a mask made of a flexible, non-irritating, and noncombustible or slow-burning material, such as a leather or flexible plastic, suitable lens holders attached thereto, lenses, and a positive means of support on the face, such as an adjustable headband, to retain the mask comfortably and snugly in place in front of the eyes. The edge of the mask on contact with the face shall be provided with a binding of corduroy or other suitable material. The lens holders shall hold the lenses firmly and tightly and may be readily removable or replaceable. The lens holders shall be ventilated to permit circulation of air.