Assertion: borax | /r/HasProperty | mined in death valley
Facets:
value: in california
type: LOCATION
value: mostly
type: DEGREE
value: near the surface
type: LOCATION
Source sentences:
text: But it has been mined in Death Valley, California near the surface.
text: Borax is mined mostly in Searles Lake, Borax Lake and Death Valley in California, salt marshes in Nevada and the Alkali Flat in New Mexico.