 IONE, CA, Aug. 13, 2021 GLOBE NEWSWIRE -- Purebase Corporation OTCQB: PUBC, a diversified resource company, headquartered in Ione, California, is pleased to announce the appointment of Dr. Kimberly Kurtis to the Purebase Board of Directors. For the past year, Dr. Kurtis has been serving as an Advisory Board Member. 