All exposed parts of horizontal shafting seven feet or less from a floor or working platform, excepting runways used exclusively for oiling, or running adjustments, shall be guarded by a stationary casing enclosing the shaft completely, or by a trough enclosing sides and top or sides and bottom of shafting, as location requires.
N.J. Admin. Code § 12:185-21.4
See: 38 N.J.R. 3130(a), 38 N.J.R. 5165(b).
Deleted designation "21.4.1".