Assertion: iron ore | /r/HasProperty | discovered on september
Facets:
value: by party
type: OTHER
value: by united states deputy surveyor
type: OTHER
value: by william a. burt
type: OTHER
Source sentences:
text: Iron ore was discovered on the Marquette Range on September 19, 1844 by William A. Burt, United States Deputy Surveyor, and party who were surveying in the Upper Peninsula of Michigan.