We know the intercepted Fe depths (Drillhole Summary Table in announcement). So you simply add up all these intersections and divide the total by the number of holes. In Railway's case we have a total of 135m Fe intersections from 18 holes resulting in an average depth of 7.5m.
It's impossible to accurately cal avg depths based on 18 holes covering an area of 3.64 sq km, especially when you take into account the following:
• Some samples are yet to be tested.
• Some holes need to be drilled deeper.
I could not incl the above 2 conditions in my cals, however I suspect that the 7.5m avg depth for the Railway Prospect will end up a little higher.
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