RE: RE: RE: RE: RE: new 52 week low. I guess there are no dumb questions. I guess another question would be was there a need for a mine plan when they were dewatering "the thing".
Starting in Q1 - the period ending July 31/11:
https://www.goldenbandresources.com/images/image/file/mdanda/2011-07.pdf
Komis Mine
In the first quarter of the 2012 fiscal year, work commenced on dewatering the former Komis underground
mine. This work is required to gain access to the underground workings for geological and engineering
assessment prior to commencing exploration and pre-production development.
Ground conditions at the boxcut and portal were fair to poor due to closure blasting, frost action and freeze
thaw cycles over a period of time. This area was rehabilitated with new ground support. Dewatering of the
mine produced 83,000 m3 of mine effluent, enabling access to the 360 Level, 50 metres below surface. The decline ramp and level access intersections were rehabilitated with new ground support as the mine water levels were lowered in the mine. It is expected that mine dewatering will be completed in the second quarter, at which stage the engineering and geological assessment phase will commence.
Komis Mine
During Q2 2012, dewatering of the former Komis underground mine was completed. The Company
commenced a detailed engineering and geological assessment of the mine workings, including surveying, mapping and sampling of the workings. Initial results of sampling broken muck in stope draw points, indicate that much of the material is of ore grade and the Company plans to remove this material to surface to enable continuation of void surveys.
In Q3 2012 development is planned from the lowest level of the mine workings with the objective of
providing further geological information. The Company will also update its mineral resource estimate based on the latest engineering and geological information gathered, and the results of the Phase 2 drilling program scheduled to be completed early in Q3 2012. Assay results are pending for the drilling program.
Komis Mine
The complex nature of the geology at Komis necessitated an ongoing review and analysis, as dewatering of the historical mine workings was completed in Q3 2012. An inspection of the dewatered workings, checking of ground conditions, examination of the residual broken ore was undertaken along with a review of the amount of ground preparation work needed for an underground mining operation. In addition, an exploration drift at the bottom of the historical mine workings was also finished.
This review and analysis revealed extremely complex mineralization with lower grade characteristics not readily conducive to underground mining and the Company commenced planning for an open pit mine. This planning is to be completed in Q4 2012 with mining to commence shortly thereafter.
During the fall and early winter of 2011 19 holes for a total of 4,319 metres of NQ-diameter core were drilled from surface. The results confirm that the Komis gold deposit remains open on-strike and to depth and also identify that gold mineralization extends beyond the currently known deposit. With further definition, this newly recognized, near-surface, potential along strike may serve to expand the current resource, with higher-grade mineralization beyond the currently defined deposit possibly forming the basis of an expanded mining operation.
In addition, a large envelope of gold mineralization extending beyond the known Komis deposit was identified.
Wide zones of gold mineralization in drill hole KO-11-012 (4.4 g/t gold over 90 metres) warrant follow-up for a for a previously unrecognized bulk-tonnage potential.
Kind of sounds like exploration work to further understand the geology of Komis before proceeding with a mine plan.
Kind of sounds like they found the thing is not high enough grade for underground mining. But considering the ore grades from the resource reports and historic production had such a wide variance, 15.99 g/t - 6.9 g/t, it makes sense to check for themselves.
The Komis mine was in production from February, 1996 to February, 1997. A total of 120,565 tonnes
(132,900 short tons) were processed at the Jolu mill and, as of September 1, 1997, 835,395 grams Au ii
(26,859 oz Au) and 104,693 grams Ag (3,366 oz Ag) were recovered. The final mill head was projected
to be 6.9 grams per tonne Au (0.201 oz/ton). Final recovery was 88.0%
Later in 1993, Dynatec Engineering Ltd. Calculated a mineable reserve to a vertical depth of
approximately 130 metres of 303,000 tonnes averaging 15.99 gram/tonne (334,000 tons averaging 0.467
ounce/ton) by using a 0.15 g/t Au cut-off grade and a 15% dilution factor. Dynatec did not recommend
cutting assays so assays were not cut for the calculation of this reserve.
Going back to the 2009 Pre-Feasibility Study:
Total production:
• EP Open Pit: 51,100 tonnes ore at 5.51 g/t Au, 901,600 tonnes waste
• Komis Open Pit: 584,200 tonnes ore at 4.49 g/t Au, 6,212,000 tonnes waste
• Bingo Open Pit: 8,000 tonnes ore at 14.16 g/t Au, 75,200 tonnes waste
• Bingo Underground: 115,000 tonnes ore at 14.67 g/t Au