Assertion: strip mining | /r/HasProperty | a type of surface mining
Facets:
Source sentences:
text: Strip mining is a type of surface mining which involves the removal of a thin layer of material known as an “overburden” to access buried deposits of useful minerals.
text: Strip mining is a form of surface mining that is primarily used for coal excavation.
text: Strip mining is a type of surface mining done in order to access buried deposits of useful minerals.