Dont know -I've wondered about possible sea level connection ever since seeing this in the Apr 13 PR:

'drill-hole 69, hitting iron mineral at 4-meters down and continuous to 84-meters where the drilling was suspended at 2-meters above sea level"

These holes are at lowest elev of the mine and mine rises in elev as you go east to ca 750 meters from topo I've seen-u probably know this but...

Since the mine is a minimum of 7 miles inland by crow- surrounded by mountains and in the absence of good Mex topographic maps I never thought about it til I saw the Apr 13 PR -and maybe there is no connection-maybe its just a coincidence-so since are no geologists on board on these boards have to wait for Bingo unless somebody does research on that and I havent known where to start