PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ??? Arc welding and cutting operations shall be shielded by noncombustible or flame-retardant screens to protect employees and other persons working in the vicinity from the direct rays of the arc.
http://www.w3.org/ns/prov#wasQuotedFrom
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