About: http://webisa.webdatacommons.org/114356274

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	No drill log (a written record of the drill hole which indicates cracks, mud seams and other abnormalities) was maintained.
http://www.w3.org/ns/prov#wasQuotedFrom	msha.gov