ANNUAL INFORMATION FORM ENDEAVOUR MINING CORPORATION

In the 1950s and 1960s, diamond exploration was conducted that identified 12 kimberlites and three
diamondiferous pipes. Exploration continued in the 1970s, with the Mali Gold Syndicate identifying
30 gold anomalies from soil geochemistry, including Tabakoto, Ségala and the Loulo Deposit. Additional
exploration and test mining and processing continued in the 1980s and 1990s, with the report of
the discovery of a new large kimberlite in the Kéniéba permit in the 1990s.
Ségala
During the 1990s, the Ségala property expanded to include the entire adjacent Dar Salam permit. CMC
(WA) completed four diamond drill (“DD”) holes totaling 942 metres. All holes contained
gold mineralization with average grades of 1.9 g/t Au to 4.7 g/t Au over core lengths of 34 to 55
metres, respectively. VLF-EM and magnetometer surveys appear to have been completed over an
expanded grid, with Oliver Gold Corporation completing 23 DD holes totaling 5,558 metres, on 100metre
centers over a 1,200-metre strike length. In 1996, Oliver and CMC (WA) completed a 24hole
(7,038 metres) DD program and a 291 hole reverse circulation (“RC”) drill program (13,655
metres) over the Main and Northwest Zones to depths of up to 300 metres vertical.
In 1997, Sagax Geophysics was contracted to carry out a pole-dipole IP/resistivity survey over the Dar
Salam, Moralia and Ségala West areas and two lines were surveyed over the Main Zone. Oliver drilled a
further 18 DD holes on the Main and Northwest Zones. Rescan Engineering wrote a pre-feasibility
report on the Ségala deposit. This document was submitted to the Malian government who ultimately
issued an exploitation permit for the property. In 1998, Pearson Hoffman and Associates completed
a resource estimate for the Ségala Main and Northwest Zone for Nevsun using data from 72 DD holes
and 291 RC holes.
In 2002, Snowden Mining Industry Consultants (“Snowden”), on behalf of Nevsun, completed a resource
estimate for the Ségala deposit. Limited soil sampling was undertaken at Dar Salam and Moralia in
order to check on anomalous values defined by past operators and enable a consulting group to
level the Ségala soil results with those from other adjoining Nevsun properties. Induce d
Polarization (“IP”) /resistivity and magnetometer geophysical surveys were carried out over the Main
Zone for the first time. Detailed geological mapping from east of the Main Zone to the western property
boundary and regional scale mapping in the area of the Moralia Zone was completed. Infill drilling was
completed on the Ségala Main and Northwest Zones and six areas outside of the Main and
Northwest Zones were subjected to drilling programs in an effort to better understand previously
defined mineralization and to carry out preliminary drilling on other previously untested targets.
These included the following areas of the Ségala deposit: Far Northwest Zone, Moralia, Dar Salam, Dar
Salam East, Ségala East and Moralia South. A total of 11,311.5 metres of DD in 65 holes and 6,117
metres RC drilling in 67 holes was completed.
Tabakoto
Little appears to be known of any systematic exploration activity on the Tabakoto property between
the time of the initial discovery in the 1940s until the mid-1990s. Various geological consultants and
contract service firms performed exploration between 1993 and June 1997, when Nevsun assumed
management of exploration activities. In 1997, property-wide geological mapping, geophysical
surveys and soil sampling were carried out in order to have a complete database of background
exploration information. Core re-logging of all holes previously drilled was completed by a team of
geologists such that a common lithological base was utilized. Additional sampling was also carried out.
34