Past experience through another co.
They dug 12 trenches up to 2-3m deep found spod @ 2.63% Li.
They found 11 samples at > 2% and 71 samples at > 1% through trenching.
Then the 3000m diamond drill campaign started and found jack sh#$t.
So there is no guarantee the co will hit spod while drilling.
Finding spod in trenching at least gives a drill target, thats it.