Tres Estados Resource Estimation using Excel template

I've been meaning to knock up an "poor man's" Excel estimation template and here it is!

It works by using the drill sections as a background to an Excel spreadsheet then averaging the grades in the drill trace captured by each spreadsheet cell. The cells that don't capture any portion of a drill trace are estimated by averaging the neighbouring 8 cells that surround it. Grades in bold are overlaying drillhole traces containing results.

Technically speaking it's a fuzzy combination of Inverse Distance, Nearest Neighbour and Polygonal estimation.





The plan is used to add the buffers and estimate the horizontal area:




....and here is the resource tabulation. Not bad huh?