About: http://webisa.webdatacommons.org/245639557

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	Proximity detection is a technology that can be installed on mobile machinery to detect the presence of personnel or machinery within a certain distance of the machine.
http://www.w3.org/ns/prov#wasQuotedFrom	msha.gov