result of asm data collection (mongolia)psdg.bgl.esdm.go.id/makalah/tb bandung asm...
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![Page 1: Result of ASM data collection (Mongolia)psdg.bgl.esdm.go.id/makalah/TB Bandung ASM Presentation.pdf · Result of ASM data collection (Mongolia) Dr. B.Tumenbayar*, J. Uramgaa*, T](https://reader030.vdocuments.net/reader030/viewer/2022012318/5cb61c2188c993a7738b6e43/html5/thumbnails/1.jpg)
CCOP-GSJ/AIST-GAI CASM-AsiaWorkshop on the State-of-the Art of Science and Technology to
Protect the Environment and People
Result of ASM data collection
(Mongolia)Dr. B.Tumenbayar*, J. Uramgaa*, T. Maidar*
BEMM/Sans Frontiere Progres (NGO)
27-29 November 2006, Bandung, Indonesia
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ASM Survey covered
• Province (Aimag ) 14• Sub province (Soum) 37• ASM mining site (target material/element) 45
– Gold 34– Coal 5– Fluorite 4– Mercury 1– Tin 1
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Deposit types of artisanal miners
Gold a) Hard rock (Quartz-Vein)
b) Placer (Alluvial, Prolluvial)
Fluorspat Hard rock (Epithermal Vein)
Coal Placer
Tin Placer
Mercury Placer (anthropogenic)
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Gold distribution and ASM location (2004)
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Geology and metallogenic province (gold)By Tumenbayar B. Uramga J. on the basis of Tectonic Map of Mongolia (1990)
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ASM Mining technology
• Hand digging (100%) 45
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ASM processing methods
• Dry panning 4• Milling with mercury 17• Panning in the water 14• Cyanide n/a
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ASM Refining technology
• Hand separation 10• Hg amalgamation 17• Panning 18• Cyanide usage (keeping in secret) n/a
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Milling quartz with Mercury
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ASM area environmental degradation /hazards
• High 27/15• Middle 10/11
• Low 8/19
ASM Health issues concerned•Very high 3
•High 15
•Middle 3
•Low 23
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Social aspect
• Number of artisamal miners covered 8966 • Approximate ratio of child miners/worker 1/15• Approximate ratio of women miner/worker 1/8
Indigenous issues•Environment 9
•Health, environment 36
45Total
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7 years old boy is panning for gold.Uyanga Soum in Ovorkhangai Aimag. Spring 2003.
(Photo: Tumenbayar.B)
.
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Relationship between large mining company and ASM mining site
• Very bad 5• Bad 9• Low 3• N/A (means mostly bad) 28
Total 45
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ASM hazards
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ASM health issues concerned
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Mercury pollution (2000)
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Environmental degradation of ASM site (2006)
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Үр удмаа хамгаалъя
Ìèíàìàòà õîò,ßïîí (1956) Сүмбэр, Монгол (2000)
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Thank you CASM Asia