About: http://webisa.webdatacommons.org/51913399

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The Board allowed 60-inch chains as counterweight guards and guide rails made of material other than steel if they were legal at the time of installation.
http://www.w3.org/ns/prov#wasQuotedFrom	iowaworkforce.org