INTERNATIONAL MINE WATER ASSOCIATION Members of the International Mine Water Association (IMWA) share a common interest in mine water and mine drainage issues, though we arrive with different skills, backgrounds, and specialized expertise, in disciplines that range from science (e.g. chemistry, hydrogeology, microbiology, geophysics) to engineering (mostly mining and civil).

Our

ENVIRONMENTAL IMPACT OF MINING ACTIVITY Figure 1 Schematic map of environmental impact in the Rudňany ore field 1 - areas of workings present in near-surface zone, 2 - open blows, 3 - spoils, 4 - communal waste, 5 - boundary of area with Hg content in soil from 20 to 50 mg.kg-1, 6 - boundary of area with Hg content in soil over 50 mg.kg-1, 7 - shaft, 8 - main horizontal workings, 9 - exploited karst-fissure springs, 10 - streamflow AN OVERVIEW OF THE USE OF ION EXCHANGE TO EXTRACT WEALTH Flowrate / economy of scale . Figure 4 Example of payback period as a function of flowrate for Chibuluma Mines PLC . In Figure 4, a case study is represented (Hardwick, E. 2008). This particular example was modeled based on pilot work done at Chibuluma Mines PLC. A FIELD-SCALE PERFORMANCE EVALUATION OF EROSION CONTROL 5 Table 2 Cost-effectiveness evaluation of slope protection methods (continued) Rates of erosion from unprotected slopes of tailings dams can be frighteningly large. Erosion from the unprotected slope for the period of the experiment ranged from 257 to 316 tons/ha/year. LINKING WASTE ROCK DUMP CONSTRUCTION AND DESIGN WITH Linking waste rock dump construction and design with seepage geochemistry: an integrated approach using quantitative tools . Steven Pearce. 1, Bonnie Dobchuk WATER INGRESS MITIGATION PROGRAMS FOR UNDERGROUND MINES Wolkersdorfer, Ch.; Sartz, L.; Weber, A.; Burgess, J.; Tremblay, G. (Editors) 507 Water Ingress Mitigation Programs for Underground Mines – Hydrogeologi cal and Rock A REVIEW OF SULFATE REMOVAL OPTIONS FOR MINE WATERS A REVIEW OF SULFATE REMOVAL OPTIONS FOR MINE WATERS 3 Sulfate reduction has been identified to occur in sediments (Fillipek and Owen, 1980) natural wetlands and in UNDERGROUND PUMPED-STORAGE HYDRO POWER PLANTS WITH MINE 6 Lappeenranta Finan Mine ater an Circar Econoy IMA 2017 Woerorfer C Sart L Sianp M Hinen A (Eitor) Underground Pumped-Storage Hydro Power

Plants with

ECONOMIC POTENTIAL FOR REPROCESSING COPPER MINE TAILINGS Economic Potential for reprocessing Copper Mine Tailings in Chile. Malte Drobe, Axel Schippers, Jürgen Vasters BGR Hannover, Germany, malte.drobe@bgr.de, axel.schippers@bgr.de PREDICTION OF SEEPAGE FROM A PLATINUM-GROUP METALS 7 Table 3 Mineralogical composition (wt%) results of Rougher tailings material Weathering Rate1 Mineral Name Formula Rougher Tailings (%) Fast Weathering Biotite KMg 2.5 Fe2+ 0.5 AlSi 3 O 10 (OH) 1.75 F 0.25 12 Chlorite (Mg,Fe2+)5Al(Si3Al)O10(OH)8 6.7 INTERNATIONAL MINE WATER ASSOCIATION Members of the International Mine Water Association (IMWA) share a common interest in mine water and mine drainage issues, though we arrive with different skills, backgrounds, and specialized expertise, in disciplines that range from science (e.g. chemistry, hydrogeology, microbiology, geophysics) to engineering (mostly mining and civil).

Our

ENVIRONMENTAL IMPACT OF MINING ACTIVITY Figure 1 Schematic map of environmental impact in the Rudňany ore field 1 - areas of workings present in near-surface zone, 2 - open blows, 3 - spoils, 4 - communal waste, 5 - boundary of area with Hg content in soil from 20 to 50 mg.kg-1, 6 - boundary of area with Hg content in soil over 50 mg.kg-1, 7 - shaft, 8 - main horizontal workings, 9 - exploited karst-fissure springs, 10 - streamflow AN OVERVIEW OF THE USE OF ION EXCHANGE TO EXTRACT WEALTH Flowrate / economy of scale . Figure 4 Example of payback period as a function of flowrate for Chibuluma Mines PLC . In Figure 4, a case study is represented (Hardwick, E. 2008). This particular example was modeled based on pilot work done at Chibuluma Mines PLC. A FIELD-SCALE PERFORMANCE EVALUATION OF EROSION CONTROL 5 Table 2 Cost-effectiveness evaluation of slope protection methods (continued) Rates of erosion from unprotected slopes of tailings dams can be frighteningly large. Erosion from the unprotected slope for the period of the experiment ranged from 257 to 316 tons/ha/year. LINKING WASTE ROCK DUMP CONSTRUCTION AND DESIGN WITH Linking waste rock dump construction and design with seepage geochemistry: an integrated approach using quantitative tools . Steven Pearce. 1, Bonnie Dobchuk WATER INGRESS MITIGATION PROGRAMS FOR UNDERGROUND MINES Wolkersdorfer, Ch.; Sartz, L.; Weber, A.; Burgess, J.; Tremblay, G. (Editors) 507 Water Ingress Mitigation Programs for Underground Mines – Hydrogeologi cal and Rock A REVIEW OF SULFATE REMOVAL OPTIONS FOR MINE WATERS A REVIEW OF SULFATE REMOVAL OPTIONS FOR MINE WATERS 3 Sulfate reduction has been identified to occur in sediments (Fillipek and Owen, 1980) natural wetlands and in UNDERGROUND PUMPED-STORAGE HYDRO POWER PLANTS WITH MINE 6 Lappeenranta Finan Mine ater an Circar Econoy IMA 2017 Woerorfer C Sart L Sianp M Hinen A (Eitor) Underground Pumped-Storage Hydro Power

Plants with

ECONOMIC POTENTIAL FOR REPROCESSING COPPER MINE TAILINGS Economic Potential for reprocessing Copper Mine Tailings in Chile. Malte Drobe, Axel Schippers, Jürgen Vasters BGR Hannover, Germany, malte.drobe@bgr.de, axel.schippers@bgr.de PREDICTION OF SEEPAGE FROM A PLATINUM-GROUP METALS 7 Table 3 Mineralogical composition (wt%) results of Rougher tailings material Weathering Rate1 Mineral Name Formula Rougher Tailings (%) Fast Weathering Biotite KMg 2.5 Fe2+ 0.5 AlSi 3 O 10 (OH) 1.75 F 0.25 12 Chlorite (Mg,Fe2+)5Al(Si3Al)O10(OH)8 6.7

IMWA MEETINGS

IMWA Meetings. IMWA organises a Congress every 3 years and Symposia between the Congresses. In addition, IMWA co-organises other Congresses or Conferences and participates in the organisation of other mine water related meetings. At each IMWA Congress or Symposium peer reviewed or edited Proceedings volumes are produced.

PROCEEDINGS

IMWA and the China University of Mining and Technology (CUMT) in Xuzhou/China signed a Memorandum of Understanding about future co-operation. In addition, CUMT explained that they are interested in hosting the IMWA 2014 Congress. W. M. WHITE GEOCHEMISTRY CHAPTER 7: TRACE ELEMENTS CHAPTER W. M. White Geochemistry Chapter 7: Trace Elements 261 HCO 3 −, Mg2+, Ca2+, K+ and Na+ (and H2O, of course) can be considered a trace constituent, though Sr2+, HBO 3 −, and Br– are sometimes considered major constituents also (constituents or species is a better term here than elements). These, including the last three, constitute over 99.99% of the total dissolved W. M. WHITE GEOCHEMISTRY CHAPTER 9: STABLE ISOTOPES W. M. White Geochemistry Chapter 9: Stable Isotopes 363 9.1.2.2 The Fractionation Factor The fractionation factor, α, is the ratio of isotope ratios in two phases: α A−B ≡ R A R B 9.03 The fractionation of isotopes between two phases is also often reported as

∆

ARTIFICIAL GROUND FREEZING: AN ENVIRONMENTAL BEST PRACTICE A typical ground freezing system is shown in Figure 1 (Newman 2000). In this image a series of freeze pipes have been installed in a linear

pattern

THE HIGH DENSITY SLUDGE (HDS) PROCESS AND SULPHATE CONTROL 3 Figure 1 Metal Hydrolysis (from Aubé and Zinck, 2003) Lime dissolution is the first step of the neutralisation process. For large treatment systems, quicklime is used. THE INFLUENCE OF GROUNDWATER PRESSURE ON MINE SLOPE problem in mine slope stability assessment however is the quality of groundwater data for input to ~he analysis. Very often, due to the dynamics of mine slope layout and monitoring HYDROGEOLOGICAL PROBLEMS OF OPENCAST EXPLOITATION IN THE 557 mine working and 50-60 m in the area of SZ mine. The calculated values of hydraulic conductivity amounts to 1.6-4.1x10-4 m/s, and transmissivity to 50- 1500 m²/day. Groundwater table in the analysed areas was generally unconfined. KINETIC TESTS TO EVALUATE THE RELATIVE OXIDATION RATES OF 5 accelerating voltage of 20 kV and a constant beam current of 20 nA. The counting time on each peak was 10 s with the exception of Mn (40 s), Ag (40 s) and trace elements (Cd, Co:40 s). SIMULATING THE PERFORMANCE OF A DRY STACK TAILINGS DESIGN 1 Simulating the Performance of a Dry Stack Tailings Design for Water Control Permitting Amy Hudson1, April Hussey1, Andrew Harley1 and

Timothy M. Dyhr2 1.

INTERNATIONAL MINE WATER ASSOCIATION Members of the International Mine Water Association (IMWA) share a common interest in mine water and mine drainage issues, though we arrive with different skills, backgrounds, and specialized expertise, in disciplines that range from science (e.g. chemistry, hydrogeology, microbiology, geophysics) to engineering (mostly mining and civil).

Our

IMWA MEETINGS

IMWA Meetings. IMWA organises a Congress every 3 years and Symposia between the Congresses. In addition, IMWA co-organises other Congresses or Conferences and participates in the organisation of other mine water related meetings. At each IMWA Congress or Symposium peer reviewed or edited Proceedings volumes are produced. CONGRESSES - INTERNATIONAL MINE WATER ASSOCIATION Mine Water is the water that collects in both surface and underground mines. It comes from the inflow of rain or surface water and from groundwater seepage. ENVIRONMENTAL IMPACT OF MINING ACTIVITY Figure 1 Schematic map of environmental impact in the Rudňany ore field 1 - areas of workings present in near-surface zone, 2 - open blows, 3 - spoils, 4 - communal waste, 5 - boundary of area with Hg content in soil from 20 to 50 mg.kg-1, 6 - boundary of area with Hg content in soil over 50 mg.kg-1, 7 - shaft, 8 - main horizontal workings, 9 - exploited karst-fissure springs, 10 - streamflow AN OVERVIEW OF THE USE OF ION EXCHANGE TO EXTRACT WEALTH Flowrate / economy of scale . Figure 4 Example of payback period as a function of flowrate for Chibuluma Mines PLC . In Figure 4, a case study is represented (Hardwick, E. 2008). This particular example was modeled based on pilot work done at Chibuluma Mines PLC. A FIELD-SCALE PERFORMANCE EVALUATION OF EROSION CONTROL 5 Table 2 Cost-effectiveness evaluation of slope protection methods (continued) Rates of erosion from unprotected slopes of tailings dams can be frighteningly large. Erosion from the unprotected slope for the period of the experiment ranged from 257 to 316 tons/ha/year. SEEPAGE CONTROL FOR TAILINGS DAMS SECTION 4 Tailings and Waste Disposal-Seepage, Contamination, Regulations, and Control 33 Seepage Control for Tailings Dams by Earle J. Klohn, President, Klohn Leonoff Consultants Ltd., PREDICTION OF SEEPAGE FROM A PLATINUM-GROUP METALS 7 Table 3 Mineralogical composition (wt%) results of Rougher tailings material Weathering Rate1 Mineral Name Formula Rougher Tailings (%) Fast Weathering Biotite KMg 2.5 Fe2+ 0.5 AlSi 3 O 10 (OH) 1.75 F 0.25 12 Chlorite (Mg,Fe2+)5Al(Si3Al)O10(OH)8 6.7 ECONOMIC POTENTIAL FOR REPROCESSING COPPER MINE TAILINGS Economic Potential for reprocessing Copper Mine Tailings in Chile. Malte Drobe, Axel Schippers, Jürgen Vasters BGR Hannover, Germany, malte.drobe@bgr.de, axel.schippers@bgr.de ACID BASE ACCOUNTING CRITERIA MATERIALS ARE CAPABLE OF 3 The AP of waste rock is commonly predicted from the analysis of drill core or blast hole chips, which are ‘whole rock’analyses. Post-blast waste rock monitoring is needed to check if sulphides INTERNATIONAL MINE WATER ASSOCIATION Members of the International Mine Water Association (IMWA) share a common interest in mine water and mine drainage issues, though we arrive with different skills, backgrounds, and specialized expertise, in disciplines that range from science (e.g. chemistry, hydrogeology, microbiology, geophysics) to engineering (mostly mining and civil).

Our

IMWA MEETINGS

IMWA Meetings. IMWA organises a Congress every 3 years and Symposia between the Congresses. In addition, IMWA co-organises other Congresses or Conferences and participates in the organisation of other mine water related meetings. At each IMWA Congress or Symposium peer reviewed or edited Proceedings volumes are produced. CONGRESSES - INTERNATIONAL MINE WATER ASSOCIATION Mine Water is the water that collects in both surface and underground mines. It comes from the inflow of rain or surface water and from groundwater seepage. ENVIRONMENTAL IMPACT OF MINING ACTIVITY Figure 1 Schematic map of environmental impact in the Rudňany ore field 1 - areas of workings present in near-surface zone, 2 - open blows, 3 - spoils, 4 - communal waste, 5 - boundary of area with Hg content in soil from 20 to 50 mg.kg-1, 6 - boundary of area with Hg content in soil over 50 mg.kg-1, 7 - shaft, 8 - main horizontal workings, 9 - exploited karst-fissure springs, 10 - streamflow AN OVERVIEW OF THE USE OF ION EXCHANGE TO EXTRACT WEALTH Flowrate / economy of scale . Figure 4 Example of payback period as a function of flowrate for Chibuluma Mines PLC . In Figure 4, a case study is represented (Hardwick, E. 2008). This particular example was modeled based on pilot work done at Chibuluma Mines PLC. A FIELD-SCALE PERFORMANCE EVALUATION OF EROSION CONTROL 5 Table 2 Cost-effectiveness evaluation of slope protection methods (continued) Rates of erosion from unprotected slopes of tailings dams can be frighteningly large. Erosion from the unprotected slope for the period of the experiment ranged from 257 to 316 tons/ha/year. SEEPAGE CONTROL FOR TAILINGS DAMS SECTION 4 Tailings and Waste Disposal-Seepage, Contamination, Regulations, and Control 33 Seepage Control for Tailings Dams by Earle J. Klohn, President, Klohn Leonoff Consultants Ltd., PREDICTION OF SEEPAGE FROM A PLATINUM-GROUP METALS 7 Table 3 Mineralogical composition (wt%) results of Rougher tailings material Weathering Rate1 Mineral Name Formula Rougher Tailings (%) Fast Weathering Biotite KMg 2.5 Fe2+ 0.5 AlSi 3 O 10 (OH) 1.75 F 0.25 12 Chlorite (Mg,Fe2+)5Al(Si3Al)O10(OH)8 6.7 ECONOMIC POTENTIAL FOR REPROCESSING COPPER MINE TAILINGS Economic Potential for reprocessing Copper Mine Tailings in Chile. Malte Drobe, Axel Schippers, Jürgen Vasters BGR Hannover, Germany, malte.drobe@bgr.de, axel.schippers@bgr.de ACID BASE ACCOUNTING CRITERIA MATERIALS ARE CAPABLE OF 3 The AP of waste rock is commonly predicted from the analysis of drill core or blast hole chips, which are ‘whole rock’analyses. Post-blast waste rock monitoring is needed to check if sulphides

PROCEEDINGS 2009

Jenk, U., Paul, M. & Schöpke, R. (2009): Development of a Novel Approach to Source Manipulation to be Applied at the Flooded Underground Uranium Mine at Königstein, Germany. – In: Water Institute of Southern Africa & International Mine Water Association: W. M. WHITE GEOCHEMISTRY CHAPTER 9: STABLE ISOTOPES W. M. White Geochemistry Chapter 9: Stable Isotopes 363 9.1.2.2 The Fractionation Factor The fractionation factor, α, is the ratio of isotope ratios in two phases: α A−B ≡ R A R B 9.03 The fractionation of isotopes between two phases is also often reported as

∆

PROCEEDINGS 2013

”Annual International Mine Water Association Conference – Reliable Mine Water Technology” Golden, Colorado, USA 2013. ISBN 978-0-615-79385-6 | Editors: Adrian SPECIATION ANALYSIS OF COLLOIDAL SILICA IN ACIDIC CONDITIONS Wolkersdorfer, Ch.; Sartz, L.; Weber, A.; Burgess, J.; Tremblay, G. (Editors) 103 Abstract Dissolved silica speciation is of great importance in mining as it LINKING WASTE ROCK DUMP CONSTRUCTION AND DESIGN WITH Linking waste rock dump construction and design with seepage geochemistry: an integrated approach using quantitative tools . Steven Pearce. 1, Bonnie Dobchuk

PROCEEDINGS 2018

download the full proceedings here: IMWA2018 Proceedings (Volume I) IMWA2018 Proceedings (Volume II) Åhlgren, Kristina; Sjöberg, Viktor; Bäckström, Mattias (2018): Leaching of U, V, Ni and Mo from Alum Shale Waste as a Function of Redox and pH - Suggestion for a Leaching

method.

COVER DRILLING AND CEMENTATION OF WATER FISSURE DURING 585 Cover drilling and cementation of water fissure during shaft sinking and the use of micro fine cement as a grouting medium Petrus Johannes Lodewikus Nel1, Tom Arild Melbye2, Hans Olav Hognestad3 1Shaft Sinkers International (Pty) Limited, Centex Office Park, Katherine Street, Sandton, Republic of South Africa. e-mail:nel@shaftsinkersint.co.za “HEAVY METALS”—A MEANINGLESS TERM? “Heavy metals”—a meaningless term? (IUPAC Technical Report) Abstract: Over the past two decades, the term “heavy metals” has been widely used. It is often used as DEWATERING SYSTEMS FOR UNDERGROUND AND SURFACE MINES IN Dewatering Systems for Underground and Surface Mines in the Kreka Coal Basin By IJuban l:EKIC1 and Esad ORUl:2 1RGF -TUZLA, School of Mines and Geology 75000 Tuzla, Yugoslavia 2RI -TUZLA, Mining Institute, Department of Geology and Geotechnic 75000 Tuzla, Yugoslavia PREGROUTING DURING DEEP SHAFT SINKING Fig.2. Schematic of elimination sudden inrush of water into Pin Lin Intake Shaft No3 through grouting holes drilled from the ground surface . In order to realize this grouting plan, from ground surface to face of Intake Shaft No3, DSG together with Taiwanian INTERNATIONAL MINE WATER ASSOCIATION Members of the International Mine Water Association (IMWA) share a common interest in mine water and mine drainage issues, though we arrive with different skills, backgrounds, and specialized expertise, in disciplines that range from science (e.g. chemistry, hydrogeology, microbiology, geophysics) to engineering (mostly mining and civil).

Our

IMWA MEETINGSINTERNATIONAL WATER ASSOCIATION CONFERENCEINTERNATIONAL WATER ORGANIZATIONINTERNATIONAL WATER RESOURCES ASSOCIATIONWORLD WATER

ASSOCIATION

IMWA Meetings. IMWA organises a Congress every 3 years and Symposia between the Congresses. In addition, IMWA co-organises other Congresses or Conferences and participates in the organisation of other mine water related meetings. At each IMWA Congress or Symposium peer reviewed or edited Proceedings volumes are produced. CONGRESSES - INTERNATIONAL MINE WATER ASSOCIATION Mine Water is the water that collects in both surface and underground mines. It comes from the inflow of rain or surface water and from groundwater seepage. ENVIRONMENTAL IMPACT OF MINING ACTIVITY Figure 1 Schematic map of environmental impact in the Rudňany ore field 1 - areas of workings present in near-surface zone, 2 - open blows, 3 - spoils, 4 - communal waste, 5 - boundary of area with Hg content in soil from 20 to 50 mg.kg-1, 6 - boundary of area with Hg content in soil over 50 mg.kg-1, 7 - shaft, 8 - main horizontal workings, 9 - exploited karst-fissure springs, 10 - streamflow AN OVERVIEW OF THE USE OF ION EXCHANGE TO EXTRACT WEALTH Flowrate / economy of scale . Figure 4 Example of payback period as a function of flowrate for Chibuluma Mines PLC . In Figure 4, a case study is represented (Hardwick, E. 2008). This particular example was modeled based on pilot work done at Chibuluma Mines PLC. A FIELD-SCALE PERFORMANCE EVALUATION OF EROSION CONTROL 5 Table 2 Cost-effectiveness evaluation of slope protection methods (continued) Rates of erosion from unprotected slopes of tailings dams can be frighteningly large. Erosion from the unprotected slope for the period of the experiment ranged from 257 to 316 tons/ha/year. SEEPAGE CONTROL FOR TAILINGS DAMS SECTION 4 Tailings and Waste Disposal-Seepage, Contamination, Regulations, and Control 33 Seepage Control for Tailings Dams by Earle J. Klohn, President, Klohn Leonoff Consultants Ltd., PREDICTION OF SEEPAGE FROM A PLATINUM-GROUP METALS 7 Table 3 Mineralogical composition (wt%) results of Rougher tailings material Weathering Rate1 Mineral Name Formula Rougher Tailings (%) Fast Weathering Biotite KMg 2.5 Fe2+ 0.5 AlSi 3 O 10 (OH) 1.75 F 0.25 12 Chlorite (Mg,Fe2+)5Al(Si3Al)O10(OH)8 6.7 ECONOMIC POTENTIAL FOR REPROCESSING COPPER MINE TAILINGS Economic Potential for reprocessing Copper Mine Tailings in Chile. Malte Drobe, Axel Schippers, Jürgen Vasters BGR Hannover, Germany, malte.drobe@bgr.de, axel.schippers@bgr.de ACID BASE ACCOUNTING CRITERIA MATERIALS ARE CAPABLE OFACID BASE ACCOUNTING METHODACID BASE ACCOUNTING METHODACID BASE BALANCE FOR NURSESACID BASE BALANCE PRACTICE QUESTIONSACID BASE BALANCE PRACTICE QUESTIONSACID BASE MADE EASY PDF 3 The AP of waste rock is commonly predicted from the analysis of drill core or blast hole chips, which are ‘whole rock’analyses. Post-blast waste rock monitoring is needed to check if sulphides INTERNATIONAL MINE WATER ASSOCIATION Members of the International Mine Water Association (IMWA) share a common interest in mine water and mine drainage issues, though we arrive with different skills, backgrounds, and specialized expertise, in disciplines that range from science (e.g. chemistry, hydrogeology, microbiology, geophysics) to engineering (mostly mining and civil).

Our

IMWA MEETINGSINTERNATIONAL WATER ASSOCIATION CONFERENCEINTERNATIONAL WATER ORGANIZATIONINTERNATIONAL WATER RESOURCES ASSOCIATIONWORLD WATER

ASSOCIATION

IMWA Meetings. IMWA organises a Congress every 3 years and Symposia between the Congresses. In addition, IMWA co-organises other Congresses or Conferences and participates in the organisation of other mine water related meetings. At each IMWA Congress or Symposium peer reviewed or edited Proceedings volumes are produced. CONGRESSES - INTERNATIONAL MINE WATER ASSOCIATION Mine Water is the water that collects in both surface and underground mines. It comes from the inflow of rain or surface water and from groundwater seepage. ENVIRONMENTAL IMPACT OF MINING ACTIVITY Figure 1 Schematic map of environmental impact in the Rudňany ore field 1 - areas of workings present in near-surface zone, 2 - open blows, 3 - spoils, 4 - communal waste, 5 - boundary of area with Hg content in soil from 20 to 50 mg.kg-1, 6 - boundary of area with Hg content in soil over 50 mg.kg-1, 7 - shaft, 8 - main horizontal workings, 9 - exploited karst-fissure springs, 10 - streamflow AN OVERVIEW OF THE USE OF ION EXCHANGE TO EXTRACT WEALTH Flowrate / economy of scale . Figure 4 Example of payback period as a function of flowrate for Chibuluma Mines PLC . In Figure 4, a case study is represented (Hardwick, E. 2008). This particular example was modeled based on pilot work done at Chibuluma Mines PLC. A FIELD-SCALE PERFORMANCE EVALUATION OF EROSION CONTROL 5 Table 2 Cost-effectiveness evaluation of slope protection methods (continued) Rates of erosion from unprotected slopes of tailings dams can be frighteningly large. Erosion from the unprotected slope for the period of the experiment ranged from 257 to 316 tons/ha/year. SEEPAGE CONTROL FOR TAILINGS DAMS SECTION 4 Tailings and Waste Disposal-Seepage, Contamination, Regulations, and Control 33 Seepage Control for Tailings Dams by Earle J. Klohn, President, Klohn Leonoff Consultants Ltd., PREDICTION OF SEEPAGE FROM A PLATINUM-GROUP METALS 7 Table 3 Mineralogical composition (wt%) results of Rougher tailings material Weathering Rate1 Mineral Name Formula Rougher Tailings (%) Fast Weathering Biotite KMg 2.5 Fe2+ 0.5 AlSi 3 O 10 (OH) 1.75 F 0.25 12 Chlorite (Mg,Fe2+)5Al(Si3Al)O10(OH)8 6.7 ECONOMIC POTENTIAL FOR REPROCESSING COPPER MINE TAILINGS Economic Potential for reprocessing Copper Mine Tailings in Chile. Malte Drobe, Axel Schippers, Jürgen Vasters BGR Hannover, Germany, malte.drobe@bgr.de, axel.schippers@bgr.de ACID BASE ACCOUNTING CRITERIA MATERIALS ARE CAPABLE OFACID BASE ACCOUNTING METHODACID BASE ACCOUNTING METHODACID BASE BALANCE FOR NURSESACID BASE BALANCE PRACTICE QUESTIONSACID BASE BALANCE PRACTICE QUESTIONSACID BASE MADE EASY PDF 3 The AP of waste rock is commonly predicted from the analysis of drill core or blast hole chips, which are ‘whole rock’analyses. Post-blast waste rock monitoring is needed to check if sulphides

PROCEEDINGS 2009

Jenk, U., Paul, M. & Schöpke, R. (2009): Development of a Novel Approach to Source Manipulation to be Applied at the Flooded Underground Uranium Mine at Königstein, Germany. – In: Water Institute of Southern Africa & International Mine Water Association: W. M. WHITE GEOCHEMISTRY CHAPTER 9: STABLE ISOTOPES W. M. White Geochemistry Chapter 9: Stable Isotopes 363 9.1.2.2 The Fractionation Factor The fractionation factor, α, is the ratio of isotope ratios in two phases: α A−B ≡ R A R B 9.03 The fractionation of isotopes between two phases is also often reported as

∆

PROCEEDINGS 2013

”Annual International Mine Water Association Conference – Reliable Mine Water Technology” Golden, Colorado, USA 2013. ISBN 978-0-615-79385-6 | Editors: Adrian SPECIATION ANALYSIS OF COLLOIDAL SILICA IN ACIDIC CONDITIONS Wolkersdorfer, Ch.; Sartz, L.; Weber, A.; Burgess, J.; Tremblay, G. (Editors) 103 Abstract Dissolved silica speciation is of great importance in mining as it LINKING WASTE ROCK DUMP CONSTRUCTION AND DESIGN WITH Linking waste rock dump construction and design with seepage geochemistry: an integrated approach using quantitative tools . Steven Pearce. 1, Bonnie Dobchuk

PROCEEDINGS 2018

download the full proceedings here: IMWA2018 Proceedings (Volume I) IMWA2018 Proceedings (Volume II) Åhlgren, Kristina; Sjöberg, Viktor; Bäckström, Mattias (2018): Leaching of U, V, Ni and Mo from Alum Shale Waste as a Function of Redox and pH - Suggestion for a Leaching

method.

COVER DRILLING AND CEMENTATION OF WATER FISSURE DURING 585 Cover drilling and cementation of water fissure during shaft sinking and the use of micro fine cement as a grouting medium Petrus Johannes Lodewikus Nel1, Tom Arild Melbye2, Hans Olav Hognestad3 1Shaft Sinkers International (Pty) Limited, Centex Office Park, Katherine Street, Sandton, Republic of South Africa. e-mail:nel@shaftsinkersint.co.za “HEAVY METALS”—A MEANINGLESS TERM? “Heavy metals”—a meaningless term? (IUPAC Technical Report) Abstract: Over the past two decades, the term “heavy metals” has been widely used. It is often used as DEWATERING SYSTEMS FOR UNDERGROUND AND SURFACE MINES IN Dewatering Systems for Underground and Surface Mines in the Kreka Coal Basin By IJuban l:EKIC1 and Esad ORUl:2 1RGF -TUZLA, School of Mines and Geology 75000 Tuzla, Yugoslavia 2RI -TUZLA, Mining Institute, Department of Geology and Geotechnic 75000 Tuzla, Yugoslavia PREGROUTING DURING DEEP SHAFT SINKING Fig.2. Schematic of elimination sudden inrush of water into Pin Lin Intake Shaft No3 through grouting holes drilled from the ground surface . In order to realize this grouting plan, from ground surface to face of Intake Shaft No3, DSG together with Taiwanian

* Skip to content

* Skip to main navigation * Skip to first column * Skip to second column IMWA - INTERNATIONAL MINE WATER ASSOCIATION

*

*

*

GLÜCKAUF! ON THE WEB SITE OF THE INTERNATIONAL MINE WATER

ASSOCIATION IMWA

Members of the International Mine Water Association (IMWA) share a common interest in mine water and mine drainage issues, though we arrive with different skills, backgrounds, and specialized expertise, in disciplines that range from science (e.g. chemistry, hydrogeology, microbiology, geophysics) to engineering (mostly mining and civil). Our Association has 518 members, including pragmatic consultants and mining company employees, academic researchers (faculty, graduate students, and undergraduates), and government scientists and regulators. Mine water, as we understand it, comprises acid mine drainage (AMD), neutral mine drainage (NMD) and alkaline mine drainage as well as its prevention, control, and treatment. Our dues are low (70 € since 2019 ) and all dues-paying members receive our quarterly journal, Mine Water and the Environment , and discounts at all of our annual Symposia and

Congresses.

WE OFFER A 50% JOURNAL ANNIVERSARY AND CORONA DISCOUNT IN 2021! ------------------------- 14TH IMWA CONGRESS 2021 NEWPORT, ICC WALES – UNITED KINGDOM 12TH TO 16TH JULY 2021 ------------------------- SAIMM – GLOBAL TAILINGS STANDARDS AND OPPORTUNITIES FOR THE MINE OF

THE FUTURE

SUN CITY RESORT, RUSTENBURG, SOUTH AFRICA 8TH TO 10TH NOVEMBER 2021 ------------------------- ------------------------- List of IMWA’s Corporate Members Last Updated on Saturday, 06 February 2021 23:22

MENU

* Homepage

* IMWA - What for and for what? * IMWA’s Objectives and Aims * Excecutive Council * Journal & Publications

* IMWA Meetings

* IMWA Awards

* Mine Water Weblinks

* IMWA Forum

* Membership | Payment | By-Laws * Mine Water Web Albums * IMWA’s Job Postings

INFORMATION

* Register to IMWA Newsletter

* Mine Water Notes

* Lagniappe

WHO IS ONLINE

We have 196 guests online

FOLLOW US ON ...

NEWS FLASH

Mine Water can be used as a drinking water resource in many countries of the world. Very often, no treatment is necessary.

Username

Password

Remember Me

* Forgot your password? * Forgot your username? Copyright © 2021 IMWA - International Mine Water Association. All

Rights Reserved.

Joomla! is Free Software released under the

GNU/GPL License.

Feed Entries