F. Cardell Pengilly was an associate of the (British) Institution of Mining and Metallurgy but seems to have come to the Witwatersrand from Australia about 1896. By January 1897 he was a member of the Chemical and Metallurgical Society of South Africa and in December that year read a paper before it on "Australian slimes agitation vat". The paper was published in the society's Proceedings (Vol. 2, pp. 180-182). Three months later he read a related paper, "Notes on Deedle's gold extractor (an Australian slimes agitating vat)" (Proceedings, February 1898, Vol. 2, pp. 234-237). In June 1902 he was reported to have left for Canada.