About: http://webisa.webdatacommons.org/41348483

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	Operations in hard soils can be difficult, including the risk of deflecting the impact mole or lead pipe off course due to large rocks, changing soil characteristics, or other obstructions.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov