34 Pa. Code § 39.551
The following words and terms, when used in this subchapter, have the following meanings, unless the context clearly indicates otherwise:
Establishment-Any place within this Commonwealth where work is done for compensation, to whomever payable, supervision over which has been given by statute to the Department.
Goggles-An optical device worn before the eyes, the predominant function of which is protection to the eyes.
Helmet-A rigid device worn by the operator, which shields the eyes, face, neck, and a portion or all of the other parts of the head and is held in place by suitable means.
Hood-A device which completely covers the head, neck, and portions of the shoulders so as to exclude dust and flying particles.
Mask-A device worn before the eyes and a portion or all of the face, the predominant function of which is protection to the eyes and face.
Protector-A device which is placed in front of the eyes, face, or head to afford protection from the hazards in various industrial processes or from the natural elements.
Shield-A device to be held in the hand, or supported without the aid of the operator, the predominant function of which is protection to the eyes and face.
34 Pa. Code § 39.551