Ann: John Dorward Joins Vital Metals as Managing Director, page-25

“And shareholders only have the top 150 metres of a deposit, and NOTHING below it”.
I must say it has been a while since I ran 150 metres (it takes me a while - mining takes even longer than that).
Also it means they get the LREE at the top and some HREE at the bottom of that 150m as well.

https://cheetahresources.com/wp-content/uploads/2021-Feb-Vital-Commences-Drilling-to-Define-Mine-Plan-at-Nechalacho.pdf
Page 4 for reference

Olympic Dam has 350 m of overburden for reference - which should show the profitability of that monster.

Avalon seems to think the TSA is 14,229 acres which is a little over 57 square km. Mining life written somewhere to be 90 years apparently (Moose Jaw reference below). Having assistance could be a good thing.

https://avalonadvancedmaterials.com/nechalacho/

https://www.moosejawtoday.com/local-news/bizworld-canadian-critical-minerals-companies-included-in-stock-watch-lists-6001443

https://www.mining-technology.com/projects/olympic-dam/