Hello PIGs: Dr. Bridget Jolly has provided a URL to the Journal of the Historical Society of South Australia, through which you can navigate to issue number 44 (2016), which contains her article on the history of kaolin mining and tourmaline discoveries on Kangaroo Island. https://nla.gov.au/nla.obj-757666181/view [https://nla.gov.au/nla.obj-757666181/representativeImage?wid=250]<https://nla.gov.au/nla.obj-757666181/view> Journal of the Historical Society of South Australia.<https://nla.gov.au/nla.obj-757666181/view> nla.gov.au David London Pegmatite Interest Group: http://www.minsocam.org/msa/Special/Pig/