Mineral Reserves and Resources
Resources and Reserves
(All amounts in US dollars, unless otherwise stated)
Eldorado's proven and probable reserves at December 31, 2012 totalled 25.8 million ounces of gold. Measured and indicated resources at the end of 2012 totalled 36.3 million ounces of gold. Complete mineral reserve and resource data including tonnes, grades and ounces as well as major assumptions and qualified persons responsible for these numbers are shown in the tables below.
Notes on Mineral Resources and Reserves:
- Mineral reserves and mineral resources are as of December 31, 2012.
- Mineral reserves are included in the mineral resources.
- The mineral reserves and mineral resources are disclosed on a total project basis (at 100%).
- The Olympias mineral reserves and mineral resources include 2.408 million tonnes of economically recoverable old tailings that grade 3.4 g/t Au and 14 g/t Ag. These are added into the gold and silver Proven reserve and Measured resource categories, respectively.
- Gold price used was $1250/oz except for Eastern Dragon, Tocantinzinho, Skouries underground, and Olympias projects which used $1000. Silver price was $16.50/oz; Copper price was $3.00/lb; Pb and Zn prices were $1,500/t for Olympias, $1,700/t for Stratoni.
- Cut-off grades (gold g/t): Kisladag: 0.20 g/t oxide, 0.31 g/t sulphide; Efemcukuru: 3.5 g/t; Perama: 0.8 g/t; Tanjianshan: 1.6 g/t JLG sulphide, 1.3 g/t JLG oxide/transition, 1.5 g/t 323 Pit; Jinfeng: 0.7 g/t open pit, 2.3g/t underground; White Mountain: 1.5 g/t; Eastern Dragon: 1.0 g/t open pit, 1.7g/t underground; Tocantinzinho: 0.49 g/t sulphide, 0.43 g/t oxide; Skouries: $7.00 NSR open pit, $25.26 NSR underground. Cut-off grade for Stratoni is based on a 16.5% Zn Equivalent grade (=Zn%+Pb%*1.08+Ag%*167). Cut-off for Olympias is geology based due to the sharpness of the mineralized contacts and the high grade nature of the mineralization.
- Due to a significantly changed resource model the pre-existing reserves for Certej project (46,960,000 tonnes at 1.60 g/t Au and 11.5 g/t Ag) are now deemed as historical. New reserves for Certej will be estimated later in 2013.
- Qualified Persons: Richard Miller, P.Eng., Manager, Mining for the Company is responsible for the Kisladag, Tanjianshan, Tocantinzinho, Vila Nova Iron, Jinfeng open pit, Perama and Skouries open pit reserves; Norm Pitcher, P.Geo., President for the Company, is responsible for the Jinfeng underground, White Mountain, Eastern Dragon, Efemcukuru, Olympias, Skouries underground and Stratoni reserves.
- Cut-off grades (gold g/t): Kisladag: 0.25 g/t; Efemcukuru: 2.5 g/t; Perama: 0.5 g/t; Jinfeng: 0.7 g/t open pit, 2.0 g/t underground; Tanjianshan: 1.0 g/t; White Mountain: 1.0 g/t; Eastern Dragon: 1.0 g/t; Tocantinzinho: 0.3 g/t ; Certej: 0.7 g/t; Skouries: 0.20 g/t Au Equivalent grade open pit, 0.60 Au Equivalent grade underground (=Au g/t + 1.6*Cu %). Resource cut-offs for Olympias and Stratoni are geology based due to the sharpness of the mineralized contacts and the high grade nature of the mineralization.
- Qualified Persons: Stephen Juras, Ph.D., P.Geo. and Director, Technical Services for the Company is responsible for all of the Company's mineral resources.
Mineral reserves and resources are reported on a 100% basis for each property.
Estimates are based on the definitions adopted by the Canadian Institute of Mining, Metallurgy and Petroleum (you can find the definitions at www.cim.org), and in accordance to the disclosures requirements with Canadian National Instrument 43-101 - Standards of Disclosure for Mineral Projects (NI 43-101), developed by the Canadian Securities Administrators
Estimates of mineral resources include mineral reserves. A mineral reserve is the part of a measured or indicated mineral resource that can be economically mined, demonstrated by at least a preliminary feasibility study that includes adequate information about mining, processing, metallurgical, economic and other relevant factors that demonstrate (at the time of reporting) that economic extraction can be justified.
Mineral resources are minerals that have reasonable prospects for economic extraction. The location, quantity, grade, geological characteristics and continuity of a mineral resource are known, estimated or interpreted from specific geological evidence and knowledge. Resources are classified into measured, indicated and inferred.
Mineral resources that have not already been classified as mineral reserves do not have demonstrated economic viability, and there can be no assurance that they will ultimately be converted into mineral reserves.
Estimating mineral reserves and resources is a subjective process. Accuracy depends on the quantity and quality of available data and assumptions and judgments made when interpreting it, which may prove to be unreliable.
The cut-off grades for the deposits are based on our assumptions for plant recovery, gold value, mining dilution and recovery, and our estimates for operating and capital costs. We may have to recalculate our estimated mineral reserves and resources based on actual production or the results of exploration.
Fluctuations in the price of gold, production costs or recovery rates can make it unprofitable for us to operate or develop a particular property for a period of time.
Important Information for US Investors
You will not be able to compare the mineral reserve and resources information with similar information from US companies.
The United States Securities & Exchange Commission (SEC) defines a mineral reserve as the part of a mineral deposit that can be economically and legally extracted or produced. It does not recognize the terms measured, indicated and inferred mineral resources (mining terms under NI 43-101), and does not accept them in reports and registration statements.
You should not assume that:
- the mineral reserves defined in these tables qualify as reserves under SEC standards
- the measured and indicated mineral resources in these tables will ever be converted to reserves
- the inferred mineral resources in these tables are economically mineable, or will ever be upgraded to a higher category