Drilling Report

Griffin Mining Ld 17 January 2005 17 JANUARY 2005 GRIFFIN MINING LIMITED RESULTS FROM UNDERGROUND DRILLING GENERAL UPDATE ON MINE PROGRESS REGIONAL EXPLORATION UPDATE Overview: - Strong underground drill results have identified new zones of high grade zinc ore not included in the original feasibility study ore reserve. - Mine development and process plant construction proceeding smoothly, on target with overall capital expenditure in line with that budgeted. - Excellent results from magnetic survey providing confidence to undertake a $1million drill programme to quantify highly prospective epithermal gold targets. Griffin Mining Limited ('Griffin' or the 'Company'), has carried out further underground drilling tests on its Caijiaying zinc/gold mine in China which have increased the potential of the project. The results from the systematic underground stope-definition diamond drilling programme have exceeded the Company's expectations in defining high-grade lodes in locations not originally included in the feasibility study ore reserve. Chairman Mladen Ninkov said: 'The results of this drilling programme will have a significant impact on the economic importance of the Caijiaying mine. Caijiaying, as we have already indicated to the market, continues to deliver previously unaccounted for new, high grade ore and Griffin is on target for commissioning this unique mine on time in the spring of 2005.' Drill Results The main focus of the drilling programme since July has been to define ore to be mined first above the 1400 level. Mineralization and specifically the 'Fu Long lode' (Rich Dragon) above the 1400 level were not included in the feasibility study ore reserve. Previous work defined two parts of this lode but the drilling has now defined an additional third part to the north. The lodes are named the North, Central and South Upper Fu Long Lodes. 1. North Upper Fu Long Lode Of the 18 holes drilled above 1400 level towards the east, results are only available for 9 holes but these give a good indication of its width and grade of this section of the North Upper Fu Long lode: Hole Interval in m Zinc% Silver g/t UGCJY-22 9.1 29.23 103.74 + 5.45 5.47 - UGCJY-24 9.45 24.14 61.32 + 1.8 10.44 36.11 UGCJY-27 10.48 18.0 56.47 UGCJY-29 2.0 6.88 65 + 1.5 7.41 50 + 2.75 14.98 56.91 UGCJY-30 3.25 26.77 86.92 UGCJY-31 4.4 22.98 110 + 4.45 7.78 24.27 UGCJY-33 4.4 12.53 28.86 + 5.4 13.39 86.11 UGCJY-35 11.25 8.4 41.96 UGCJY-37 2.05 24.7 35.12 The results show that the central part of this lode is up to 70m long, 50m high and 11m thick. The lode is open below the 1400 level. 2. The Central Upper Fu Long Lode The Central Upper Fu Long Lode has received relatively little further drilling (7 additional holes to date), however, results are available for three holes in the lower part above 1400 level: Hole Interval in m Zinc% Silver g/t UGCJY-16 3.17 13.49 27.98 UGCJY-18 3 7.42 13.33 UGCJY-38 10.15 16.65 83.6 Again the evidence indicates a lode of about 60m length and depth and up to 10m width although some wider parts are known from trial mining. 3. The Southern Upper Fu Long Lode The Southern Upper Fu Long Lode is still being drilled and results are available for only four holes above the1400 level: Hole Interval in m Zinc% Silver g/t UGCJY-17 4.51 9.08 15.59 UGCJY-19 3.85 5.58 10 + 1.7 10.48 10 UGCJY-21 2.4 9.87 - + 3.47 7.43 15.48 UGCJY-23 12.98 8.74 7.14 This lode is also open below the 1400 level. The remaining results from the Upper Fu Long Lode are expected to be received over the next two months and a reserve estimate for this section will be completed in due course. It is expected that this will further demonstrate that significantly more ore exists than was defined in the original ore reserve calculated from results obtained by the ore body being drilled in the incorrect orientation by Chinese. The underground drilling programme has now moved on to define the size of the next two lode systems - infill drilling on the Jin Long Lode (Golden Dragon), which is immediately to the west and below the 1400 level drive, and definition drilling on the Lower Fu Long Lode (below the 1400 level). Mine Development Mine development is proceeding smoothly and it has been possible to start stope development ahead of schedule rather than just concentrating on developing ore lode access ways as was originally planned. The Fu Long lodes above and 30m to the east of the 1400 level drive have now been substantially developed for full production which will commence once the main mine decline links up with the 1400 level, which is expected in the next few days. A second lode system immediately to the west and below the 1400 level drive (the Jin Long Lode) has also been accessed by a sub incline off the 1400 drive and is also currently being developed for production. A third lode system (the Chang Long or Long Dragon) is currently being drilled and early results are encouraging. Process Plant Construction and Commissioning The main process plant buildings and other infrastructure (water tanks, main pipelines, initial tailings dam, crusher foundations etc) were sufficiently completed in November to allow equipment installation to proceed during winter. All the main zinc process equipment has been delivered to the site and the major heavy equipment (ball mills and crusher) have been placed on their footings. The gold process equipment has been shipped from Australia and should arrive by the end of January. Construction of the remaining concrete tanks and gantries inside the main building is almost complete and installation of the rest of the process equipment will continue over the coming months. The main power line supply has been contracted. Administration and Management The Griffin management team, working in combination with the Chinese engineering institute (ENFI), continue to provide a cost effective and flexible management system, maintaining management control for the benefit of Griffin shareholders whilst at the same time accessing Chinese expertise in designing and installing their own equipment. This system has helped keep costs under control and maintain timetables. As a result of this policy Griffin has already recruited 80% of its professional mine management team. The Company intends to continue using existing contractors for mining tasks and has begun recruitment of the process labour workforce. The site administration and accommodation are now all complete. Budget The just completed review by senior management has indicated that, after allowing for forecasted further expenditure, the final capital expenditure prior to production is expected to be in line with that budgeted. Regional Exploration During the summer of 2004, an orientation IP survey was conducted over the Zone III mineralization and following this, a comprehensive IP survey was conducted over the area between Zones II and III. A short programme of three surface holes was implemented before winter to test some of the anomalies and the results are expected shortly. On the regional programme, a detailed ground magnetic survey was completed over the area of epithermal gold anomalies. This has yielded excellent results, which will be used to define drill targets for next summer's gold drilling programme. Further information Mladen Ninkov - Chairman Telephone: +44(0) 20 7629 7772 Roger Goodwin - Finance Director Griffin Mining Limited Philip Davies Telephone: +44(0) 20 7953 2000 Charles Stanley & Company Limited Hugo de Salis Telephone: +44 (0) 20 7242 4477 St Brides Media & Finance Ltd Griffin Mining Limited's shares are quoted on the Alternative Investment Market (AIM) of the London Stock Exchange (symbol GFM). Further information on Griffin Mining Ltd is available on the Company's web site: www.griffinmining.com This information is provided by RNS The company news service from the London Stock Exchange
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