Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper...
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Transcript of Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper...
![Page 1: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/1.jpg)
Devico in Zinkgruvan,Sweden
![Page 2: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/2.jpg)
Zinkgruvan mine
• Owned by Lundin Mining• Zinc• Lead, silver, copper• Greatly folded
mineralization• Ore body varies from
700 to 1200m vertical depth
![Page 3: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/3.jpg)
Previous drilling
• New discovery• Few and spread
boreholes• BQ-TK core drilling
• Effective• High unstable
deviation
![Page 4: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/4.jpg)
Devico in Zinkgruvan
• Contact late 2006• Delineate the new
discovery• Time saving• Accuracy
![Page 5: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/5.jpg)
Devico in Zinkgruvan
• Started in May 2007• Old 56mm borehole, 65° inclination• Reamed to 76mm and sidetracked at 630m• Targets at 900 to 1200m depth
• Second drill rig in August 2007• Old 56mm borehole, 69° inclination• Reamed to 76mm and sidetracked at 330m• Targets at 700 to 1000m depth
![Page 6: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/6.jpg)
Sidetracking
• Initial sidetracks from 56mm to 76mm• DeviDrill• Corac core barrel
• Other sidetracks• Cut out of curve• 2-3 wedges
![Page 7: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/7.jpg)
Cut the curve
![Page 8: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/8.jpg)
Borehole steering
• 100m between targets• 30 - 50m directional drilling initially• Up to 150m total steering to hit one
target
![Page 9: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/9.jpg)
Precision
• 5 or 10m target limits, less in certain directions• At times, 3 corrections in one hole• Corrections down to 1050m depth
![Page 10: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/10.jpg)
Target hit angle
• Sidetracked boreholes gets inclination of 45°-80°
• Sometimes parallel with ore body
Deep inclination changes– 15 degrees and more
– 60m or more
![Page 11: Devico in Zinkgruvan, Sweden. Zinkgruvan mine Owned by Lundin Mining Zinc Lead, silver, copper Greatly folded mineralization Ore body varies from 700.](https://reader038.fdocuments.us/reader038/viewer/2022110403/56649e625503460f94b5e6e9/html5/thumbnails/11.jpg)
Results
• 12-13 sidetracks• New mother hole under planning• Satisfied geologist!
• “From the beginning people were talking about production gain and cost gain with Devico but this aspect of being able to chase the ore horizon when the geology decides to disobey, gives me as a geologist a much easier job and better health”