Please Note: Our monthly lunch talks have moved to the Kerby Centre, 1133 7 Ave SW, Calgary, AB. The Kerby Centre is conveniently located at a C-Train station and offers free parking with validation. The main entrance to the Kerby Centre is located near the eastern end of the building, adjacent to the C-Train station. Our next talk will be held Friday, Jan 15, 2016 in Lecture Room 205. Please check in at the Reception Desk and they will direct you to Room 205.

When to stop drilling? Buckreef, Tanzania – A case study

by Stew Fumerton, Ph.D., P.Geo

A dilemna facing exploration geologists is when to stop drill testing a deposit. Various issues come into play: has the potential been fully tested, is there enough data to define an ore body, and the cost benefit to additional drilling. Also involved is the struggle between the promoters and geologists.

Buckreef was mined on a small scale in the early part of the 20th Century by unknown individuals and then unsuccessfully developed as a small scale mine by the Tanzanian government. More recently it has been tested by junior and major mining companies. In 2014/2015 an open pit was commissioned but work has stalled with no gold production. The premise of the talk is to question whether the story has changed between the resource estimation and economic analysis 20 years ago and the more recent resource estimations and analyses.

Presenter’s Bio

Stew Fumerton was the project manager when the first definition drill program and scoping study was carried out in 1995. This was for East Africa Gold, a junior company which at that time was controlled by Kinross.

An overview of Tanzanian and project geology will be presented together with a run down on the project exploration activity.


The Calgary Mineral Exploration Group Society offers monthly lunchtime seminars relating to geology and mining in the province of Alberta, across Canada and around the world.

Lunch prices:
$20.00 for members
$25.00 for non-members

Lecture Room 205, Kerby Centre
1133 7th Ave SW, Calgary, AB

Doors Open at 11:30am Talk Commences at 12:00 noon

Please confirm your intention to attend by email to so that the appropriate number of sandwiches can be ordered.

If you would like to present a lunch time talk to a keen audience of 50 or 60 professionals, please contact Glen Jones at: or telephone 403-651-3086 to submit your topic and abstract for review. If you or your company would like to sponsor a meeting please contact Glen Jones for further information.