Havilah Resources are making a big deal about a "significant" and "mammoth" new Iron Ore discovery in South Australia and have a glossy presentation to promote it, however on close inspection I see it has an average grade of 21 to 24% Fe and resource of 450 million tonnes....... I would say that is "Low Grade"
https://www.theaustralian.com.au/news/latest-news/sa-company-finds-iron-ore-deposit/news-story/261d8aca8c41e6240f177fc877760e95
http://www.havilah-resources.com.au/wp-content/uploads/2018/12/Grants_Iron_Ore_Basin_Discovery_Confirmed_4Dec18.pdf
https://unauthorised investment advice/resources/havilah-may-have-found-a-mammoth-new-iron-ore-deposit-in-south-australia/
Here's another one, Fenix Resources has definitely found a "high Grade" 64.1% resource but it's only 5 million tonnes, FMS would have that laying around behind the donga's at the old exploration camp on PIOP.
https://unauthorised investment advice/resources/fenix-gets-busy-drilling-to-grow-its-high-grade-iron-ore-resource/