About: http://webisa.webdatacommons.org/119694861

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	Concrete, masonry block, brick, and steel are examples of noncombustible materials.
http://www.w3.org/ns/prov#wasQuotedFrom	msha.gov