Assertion: carnotite | /r/HasProperty | mined on small scale
Facets:
value: in 1941
type: TEMPORAL
value: in 1917
type: TEMPORAL
value: for vanadium
type: PURPOSE
value: in 1940
type: TEMPORAL
Source sentences:
text: Uranium was discovered in sandstone of the Chinle Formation in Lisbon Valley, San Juan County in 1913, and some carnotite was mined on a small scale for vanadium in 1917, 1940, and 1941.