CENTENNIAL, Colo., Oct. 28, 2022 /PRNewswire/ — NioCorp Developments Ltd. (“NioCorp” or the “Company”) (TSX: NB) (OTCQX: NIOBF) is pleased to announce that it will conduct its 2022 Annual General Meeting (“AGM”) at 10 a.m. Mountain time on Thursday, December 15, 2022, at 7000 S. Yosemite…