I see a strip ratio of 3:1 in SA-18-07. I'd say at a thumb suck...

I see a strip ratio of 3:1 in SA-18-07. I'd say at a thumb suck that's economical. Only total of 104m deep so far .

Nemaska Lithium 190m pit depth plus extened another 90m below pit depth underground
Mt marion 186m below surface deposit viable for mining.
Quebec lithium project 150m depth pit
Pilgangoora lithium 200m pit depth
Wabouchi lithium 190m pit depth
Rose lithium tantalum project 200m pit depth
Plymouth minerals lithium found to 192m deemed viable for mining.