Assertion: strip mining | /r/HasProperty | practical
Facets:
value: by removing a long strip
type: MANNER
Source sentences:
text: Strip mining is only practical when the ore body to be excavated is relatively near the surface.
text: Strip mining" is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden); this activity is also referred to as "overburden removal".