This update incorporates production depletion from the date of the last report, production / confirmation drilling and an update to the resource and reserve assumptions, primarily a lower gold price assumption (Reserves at $1,100/oz gold, Resources at $1,200/oz gold). The update also includes a maiden resource for the San Francisco underground. All figures quoted below are in US Dollars.
The figures in Table 1 have been rounded to reflect that they are estimates. The mineral reserve estimate has been audited by Micon. It is Micon's opinion that the December 31, 2015 mineral reserve estimate has been prepared in accordance with the CIM standards and definitions for mineral reserve estimates and that Timmins can use this estimate as a basis for further mine planning and operational optimization at the San Francisco Gold Mine.
| |
|
Classification |
|
Tonnes (x1,000) |
|
Grade Au (g/t) |
|
Contained Gold Ounces |
| San Francisco Pit |
|
Measured |
|
15,932 |
|
0.62 |
|
319,000 |
| Indicated |
|
5,916 |
|
0.62 |
|
119,000 |
| Total Measured & Indicated |
|
21,848 |
|
0.62 |
|
438,000 |
| Inferred* |
|
523 |
|
0.59 |
|
10,000 |
| San Francisco Underground |
|
Measured |
|
- |
|
- |
|
- |
| Indicated |
|
476 |
|
3.48 |
|
53,000 |
| Total Measured & Indicated |
|
476 |
|
3.48 |
|
53,000 |
| Inferred* |
|
244 |
|
3.5 |
|
27,000 |
| La Chicharra Pit |
|
Measured |
|
9,768 |
|
0.51 |
|
161,000 |
| Indicated |
|
2,521 |
|
0.5 |
|
40,000 |
| Total Measured & Indicated |
|
12,289 |
|
0.51 |
|
202,000 |
| Inferred* |
|
182 |
|
0.55 |
|
3,000 |
| Total Resources |
|
Measured |
|
25,700 |
|
0.58 |
|
480,000 |
| Indicated |
|
8,913 |
|
0.74 |
|
212,000 |
| Total Measured & Indicated |
|
34,613 |
|
0.62 |
|
693,000 |
| Total Inferred* |
|
949 |
|
1.33 |
|
41,000 |
| Notes: Mineral Resources are inclusive of Mineral Reserves and are based on (1) 0.20 g/t Au cut-off grade for the open pit Mineral Resources and 1.50 g/t Au cut-off grade for the underground Mineral Resources; (2) open pit mining costs of $2.00/t rock; (3) process /G&A costs of $4.90/t ore. (4) Inferred Resources in this table do not include material outside of the pit limits. Inferred Resources have the potential to become additional Reserves at a future stage, however, due to the uncertainty that is attached to Inferred Mineral Resources, it cannot be assumed that all or any part of an Inferred Mineral Resource will be upgraded to an Indicated or Measured Mineral Resource as a result of continued exploration. In addition, Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. |
The figures in Table 2 have been rounded to reflect that they are estimates. The mineral resource estimate has been audited by Micon. It is Micon's opinion that the December 31, 2015 mineral resource estimate has been prepared in accordance with the CIM standards and definitions for mineral resource estimates.
POTENTIAL UNDERGROUND SCENARIO
With higher sustained gold prices, the Company would also investigate potential underground production scenarios at San Francisco. The initial maiden resource, as of December 31, 2015, for the San Francisco underground is shown below:
Very limited drilling has been done on the potential underground mineralization. Most of the current resource estimate is based upon open pit confirmation /delineation drilling. The Company is investigating delineation drill programs that could increase the confidence in the underground resource as well as potentially grow the resource beyond the currently estimated quantity. Different scenarios exist for the processing of the mineralization, including utilizing the current three-stage crushing and heap leaching processing used for open-pit ore, or a form of finer grinding / milling coupled with a form of more intensive cyanide leaching resulting in increased metallurgical recoveries. Ultimately Timmins envisions a small underground operation (~500 tpd) that could supplement the open pit ore.
The National Instrument 43-101 ("NI 43-101") Technical Report describing the details of the updated Reserve and Resource estimates will be filed on SEDAR (www.sedar.com) within 45 days from the date of this press release.
Technical Information and Qualified Person Notes
This press release was reviewed by Taj Singh, M.Eng, P.Eng, a Vice-President of the Company, who is recognized as a Qualified Person ("QP") under the guidelines of National Instrument 43-101 ("NI 43-101"). Mr. William Lewis, B.Sc, P.Geo, Mr. Mani Verma, M.Eng, P.Eng, Ing. Alan J. San Martin, MAusIMM(CP), of Micon are the independent QPs responsible for the Mineral Reserve and Mineral Resource Estimate. Mr. Richard M. Gowans of Micon is the independent QP responsible for the metallurgy section. Each of Mr. Lewis, Mr. Verma, Mr. San Martin, Mr. Gowans, and Mr. Singh have read and approved the contents of this news release.