About: http://webisa.webdatacommons.org/372077589

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	Materials, such as excavated materials (spoils) or equipment must be kept at least 2 feet from the edge unless adequate retaining devices are in place to keep materials from falling into the excavation.
http://www.w3.org/ns/prov#wasQuotedFrom	mtholyoke.edu