North American Crane & Rigging, LLC, (NACR) contests a one-item Citation and Notification of Penalty issued by the Secretary on June 18, 2020, for allegedly failing to adequately protect employees from the swing radii of two cranes at a construction site in Plainville, Massachusetts. The Citation resulted from a programmed inspection at a multi-employer worksite conducted on February 27, 2020, by a Compliance Safety and Health Officer (CSHO) for the Occupational Safety and Health Administration. The Citation alleges NACR violated, in two instances, 29 C.F.R. § 1926.1424(a)(2)(ii) by failing to prevent exposure of its employees to swing radius hazards because it did not adequately mark the boundaries of the hazardous areas. The Secretary proposes a penalty of $6073 for this item.