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Labrador West Dust Study
 
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1. Level 2 report, Point 6 Community Health Study, Wabush Labrador City Level 2 report, Point 6 Community Health Study, Wabush Labrador City Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Summary -- 2. Introduction -- 3. Survey Methodology -- 3.1 Design -- 3.2 Sampling and Field Work -- 4. Adult Survey -- 4.1 X-Ray Results and Discussion -- 4.1.1 Description of X-Ray Sample -- 4.1.2 Profusion Abnormalities -- 4.1.3 Pleural Thickenings/Calcification Abnormalities -- 4.2 ATS Questionnaire Results -- 4.2.1 Description of ATS Sample -- 4.2.2 Respiratory Symptoms/Conditions -- 5. Child Survey -- 5.1 Description of Child Sample -- 5.2 Symptoms and Conditions -- 6. Conclusions -- 6.1 Adult Sample -- 6.2 Child Sample -- Research Team -- List of Appendices
2. Level 2 report, Point 5 Ambient Air Study Level 2 report, Point 5 Ambient Air Study Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Introduction and Scope of Work -- 1.1 Background -- 1.2 Overall Study Components -- 1.3 Scope of Air Quality Study -- 1.4 Report Organization -- 2. Canadian Air Quality Criteria Documentation -- 2.1 Background -- 2.1.1 Philosophy Behind Air Quality Criteria and Standards -- 2.1.2 Effects of Pollutants -- 2.1.3 Effects of Suspended Particles -- 3. Description of Air Quality Sampling Programme -- 3.1 Monitoring Locations -- 3.1.1 Air Quality Sampling -- 3.1.2 Fibrous Sampling -- 3.1.3 Side by Side Ambient Sampling -- 3.2 Ambient Air Monitoring Instrumentation -- 3.2.1 High Volume Air Samplers -- 3.2.2 Anderson Dichotomous Samplers -- 3.2.3 Low Volume Fibrous Samplers -- 3.2.4 Environmental/Occupational Samplers -- 3.3 Filter Selection -- 3.3.1 Hi-Vol Sampling -- 3.3.2 Dichotomous Sampling -- 3.3.3 Side by Side Sampling -- 3.4 Sampling Frequency -- 3.4.1 Hi-Vol Sampling -- 3.4.2 Dichotomous Sampling -- 3.5 Methodology -- 3.5.1 Hi-Vol Sampling -- 3.5.2 Dichotomous Sampling -- 3.6 Meteorological Data Collection -- 3.6.1 Station Network -- 3.6.2 Instrumentation -- 3.6.3 Frequency of Data Collection and Discussion -- 4. Characterization of Regional Sources -- 4.1 Iron Ore Company of Canada -- 4.2 Wabush Scully Mines -- 4.3 Other sources -- 4.4 Air quality Monitoring Station Micro-Inventories -- 4.4.1 Labrador Tool supply -- 4.4.2 Labrador Mall -- 4.4.3 The Town Hall -- 4.4.4 A.P. Low School -- 4.4.5 Harrie Lake School -- 4.4.6 Provincial Building -- 4.4.7 47 Guy Street -- 5. Air Quality Monitoring Results -- 5.1 Gravimetric Results -- 5.1.1 Hi-Vol Suspended Particulate -- 5.1.2 Dichotomous Inhalable/Respirable Particulate Results -- 5.2 Elemental Analysis Results -- 5.2.1 X-Ray Fluorescence Analysis -- 5.2.2 Neutron Activation Analysis -- 5.2.3 Results -- 5.3 Quartz Analysis Results -- 5.3.1 CANMET -- 5.3.2 South Dakota School of Mines -- 5.3.3 Results -- 5.4 Carbon Analysis Results -- 6. Presentation of Comparable Data -- 6.1 Local Studies -- 6.2 Other Canadian Studies -- 6.3 U.S. Studies -- 6.4 Discussion -- 7. Air Emissions Inventory -- 7.1 Local Sources of Emitted Particulate Matter -- 7.1.1 Industrial Fugitive Dust Sources -- 7.1.2 Industrial Process Dust Sources -- 7.1.3 Community Dust sources -- 7.1.4 Combustion Sources -- 7.1.5 Discussion of Sources -- 7.2 Bulk Sample Collection Programme -- 7.2.1 Industrial Fugitive Dust Sources -- 7.2.2 Industrial Process Dust Sources -- 7.2.3 Community Dust Sources -- 7.2.4 Summary -- 7.3 Bulk Sample Analysis Results -- 7.3.1 Analytical Procedures -- 7.3.2 Selected Elemental/Quartz Results -- 7.4 Discussion of Analytical Results of Source Dust -- 7.4.1 Fugitive Sources -- 7.4.2 Process Sources -- 8. Climatology and Dispersion Meteorology -- 8.1 Climatology of the Region -- 8.2 Climate Variables -- 8.2.1 Temperature -- 8.2.2 Precipitation -- 8.2.3 Snow Cover -- 8.2.4 Surface Wind -- 8.3 Dispersion Meteorology -- 8.3.1 Mixing Height -- 8.3.2 Ventilation Coefficients -- 8.3.3 Bright Sunshine -- 8.3.4 Solar Radiation -- 8.3.5 Stability Classes -- 8.4 Meteorological Data During Sampling Period -- 8.4.1 Temperature -- 8.4.2 Precipitation -- 8.4.3 Snow Cover -- 8.4.4 Surface Wind -- 8.4.5 Bright Sunshine -- 8.5 Conclusions -- 9. Source Apportionment -- 9.1 Background -- 9.2 Receptor Modelling Methodology -- 9.2.1 Chemical Mass Balance (CMB) Model -- 9.2.2 Chemical Fingerprints -- 9.2.3 Selection of Ambient Samples -- 9.3 Resultsof Receptor Modelling -- 9.3.1 General -- 9.3.2 Labrador Tool Supply -- 9.3.3 Labrador City Town Hall -- 9.3.4 A. P. Low School -- 9.3.5 Wabush Provincial Building -- 10. Conclusion and Recommendations -- 10.1 Programme Findings and Conclusions -- 10.1.1 Hi-Vol Suspended Particulate Data -- 10.1.2 Dichotomous Sampling Particulate Data -- 10.1.3 Elemental Composition of Particulate -- 10.1.4 Quartz Levels -- 10.1.5 Carbon Levels -- 10.1.6 Operating Levels -- 10.1.7 Meteorological Conditions -- 10.1.8 Source Apportionment -- 10.2 Recommendations for Mitigation -- References
3. Level 2 report, Point 4 Medical Assessment of the Workforce, Iron Ore Company of Canada Level 2 report, Point 4 Medical Assessment of the Workforce, Iron Ore Company of Canada Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Summary -- 2. Background -- 3. Introduction -- 4. Phase A: A Review of Diagnosed and Suspected Cases of Pneumoconiosis -- 4.1 General -- 4.2 Chairman's Report -- 5. Phase B: Respiratory Health Status of the Current Workforce -- 5.1 General -- 5.2 Descriptive Statistics -- 5.3 Prevalence of Pneumoconiosis -- 5.4 Clinical Case Description of Employees who were/are Employed by IOCC -- 5.5 Correlation of Radiologic Appearance compatible with Pneumoconiosis (RACP) to Health Status and Dust Levels at IOCC -- 5.6 Accord of RACP (5.5) with Clinical Case Description (5.4) -- 5.7 Profusion of Ratings by Averaging Four Readings at IOCC and the Relationship to Selected Dust Exposure Indices -- 6. Phase C: An Examination of a Sample of Former Employees of IOCC -- 6.1 Introduction -- 6.2 General -- 6.3 Objectives -- 6.4 Design -- 6.5 Sampling Procedure -- 6.6 Results and Discussion -- 6.7 ATS Questionnaire Sub-Sample -- 6.8 Conclusions -- 6.9 Feasibility of the Study -- 6.10 Recommendations -- 7. A Summary of Conclusions of the Medical Assessment at the Iron Ore Company of Canada Mining and Processing Operations at Labrador City -- Attachments -- List of Contributors -- Appendices
4. Level 2 report, Point 3 Engineering Audit of Dust Control Measures, Iron Ore Company of Canada Level 2 report, Point 3 Engineering Audit of Dust Control Measures, Iron Ore Company of Canada Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Summary -- 2. Introduction -- 3. Background -- 4. Summary of Visits -- 5. Description of Plant Operations -- 5.1 Primary Crushing Plant -- 5.2 Shuttle Conveyor Gallery -- 5.3 Grinding Area 1 -- 5.4 Expansion Grinding Area -- 5.5 Expansion Screenhouse -- 5.6 Spirals Plant -- 5.7 Magnetic Plant -- 5.8 Concentrate Re-Grind and Balling Plant -- 5.9 Induration Plant -- 5.10 Pellet Screening Plant -- 5.11 Pellet Loadout Area -- 5.12 Concentrate Loadout Area -- 6. General Plant Ventilation -- 6.1 Coarse Ore Storage Shuttle Gallery -- 6.2 Grinding Area 1 -- 6.3 Expansion Grinding Area -- 6.4 Spirals Plant Area -- 6.5 Concentrate Re-Grind Area -- 6.6 Induration Plant -- 6.7 General -- 7. Miscellaneous Operations -- 7.1 Open Pits -- 7.2 Tailings Area -- 8. Observations -- 8.1 Primary Crushing Plant -- 8.2 Shuttle Conveyor Gallery -- 8.3 Grinding Area 1 -- 8.4 Expansion Grinding -- 8.5 Expansion Screenhouse -- 8.6 Spirals Plant -- 8.7 Magnetic Plant -- 8.8 Concentrate Re-Grind and Balling Plant -- 8.9 Induration Plant -- 8.10 Pellet Screenhouse -- 8.11 Pellet Loadout Area -- 8.12 Concentrate Loadout Area -- 9. General Observations -- 10. Correlation between High Visual Dust Areas and One-Year Sampling Results -- 11. Recommendations -- a) General -- b) Housekeeping -- c) Operator Maintenance -- d) Plant Maintenance -- e) Training -- f) Environmental Engineering Staff -- g) Responsibility System -- h) Union Representative Assistants
5. Level 2 report, Point 2 Inplant Dust Study (I.O.C.C.) Level 2 report, Point 2 Inplant Dust Study (I.O.C.C.) Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Summary -- 2. Introduction -- 3. General -- 4. Geology -- 5. Dust Sampling - Quartz Analysis System -- 5.1 Description of System -- 5.2 Inter-laboratory Comparison -- 5.3 Reproducibility of Results -- 6. Routine Sampling Methods and Results -- 6.1 Work Place and Occupational Codes -- 6.2 Fixed Station Sampling -- 6.3 Personal Sampling -- 6.4 Fibre Distribution (optical) -- 6.5 Gases -- 6.6 Ionizing Radiation -- 7. Special Studies -- 7.1 Mineralogical and Chemical Analysis -- 7.2 Electron Microscope Fibre Analysis -- 7.3 Comparison of Occupational Dust Samplers -- 7.4 Total Airborne Dust -- 7.5 Comparison of Impinger Data with Gravimetric Data -- 7.6 Comparison of Fixed Station Sampling with Personal Sampling -- 7.7 Size Distribution -- 7.8 Comparison of Ambient Sampling Techniques with Occupational sampling Techniques -- 7.9 Dust Exposure Indices/Statistical Analyses -- 8. Recommendations for Future Sampling -- 8.1 Respirable Dust -- 8.2 Fibrous Particles -- 8.3 Gases -- 8.4 Ionizing Radiation -- 9. List of Appendices -- 10. List of Figures, Tables and Graphs
6. Level 2 report, Point 1 Study Organization and Administration, Iron Ore Company of Canada Level 2 report, Point 1 Study Organization and Administration, Iron Ore Company of Canada Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Introduction -- 2. Labrador Institute of Northern Studies -- 3. Labrador West Iron Ore Mining Industry -- 3.1 General -- 3.2 The Mining and Processing Operations -- 3.2.1 Scully Mines, Wabush -- 3.2.2 Iron Ore Company of Canada, Labrador City -- 4. The Labrador West Dust Study -- 4.1 Background -- 5. Organization and Administration -- 5.1 The Role of L.I.N.S. -- 5.2 Study Organization -- 6. Establishing Study Goals and Objectives -- 6.1 L.I.N.S. Administration -- 6.2 Inplant Dust Study -- 6.3 Engineering Audit -- 6.4 Medical Assessment -- 6.5 Ambient Air Study -- 6.6 Community Health Study -- Appendices -- W. Bardswich - Report on Iron Ore Company -- Dr. J. Martin - Organizational Aspects of Health-Related Studies
7. Level 2 report, Point 1 Study Organization and Administration, Scully Mines Level 2 report, Point 1 Study Organization and Administration, Scully Mines Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Introduction -- 2. Labrador Institute of Northern Studies -- 3. Labrador West Iron Ore Mining Industry -- 3.1 General -- 3.2 The Mining and Processing Operations -- 3.2.1 Scully Mines, Wabush -- 3.2.2 Iron Ore Company of Canada, Labrador City -- 4. The Labrador West Dust Study -- 4.1 Background -- 5. Organization and Administration -- 5.1 The Role of L.I.N.S. -- 5.2 Study Organization -- 6. Establishing Study Goals and Objectives -- 6.1 L.I.N.S. Administration -- 6.2 Inplant Dust Study -- 6.3 Engineering Audit -- 6.4 Medical Assessment -- 6.5 Ambient Air Study -- 6.6 Community Health Study -- Appendices -- W. Bardswich - Report on Wabush Mines -- Dr. J. Martin - Organizational Aspects of Health-Related Studies
8. Level 2 Report Point 4 Medical Assessment of the Workforce - Scully Mines Level 2 Report Point 4 Medical Assessment of the Workforce - Scully Mines Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Summary -- 2. Background -- 3. Introduction -- 4. Phase A: A Review of Diagnosed and Suspected Cases of Pneumoconiosis -- 4.1 General -- 5. Phase B: Respiratory Health Status of the Current Workforce -- 5.1 General -- 5.2 Descriptive Statistics -- 5.3 Prevalence of Pneumoconiosis -- 5.4 Clinical Case Description of Employees who were/are Employed by Scully Mines -- 5.5 Correlation of Radiologic Appearance compatible with Pneumoconiosis (RACP) to Health Status and Dust Levels at Scully Mines -- 5.6 A Comparison of RACP (5.5) with Clinical Case Description (5.4) -- 5.7 Profusion of Ratings by Averaging Four Readings at Scully Mines and the Relationship to Selected Dust Exposure Indices -- 6. Phase C: An Examination of a Sample of Former Employees of Scully Mines -- 6.1 Introduction -- 6.2 General -- 6.3 Objectives -- 6.4 Design -- 6.5 Sampling Procedure -- 6.6 Results and Discussion -- 6.7 ATS Questionnaire Sub-Sample -- 6.8 Conclusions -- 6.9 Feasibility of the Study -- 6.10 Recommendations -- 7. A Summary of Conclusions of the Medical Assessment at the Scully Mines Mining and Processing Operations at Wabush -- Attachments -- List of Contributors -- Appendices
9. Level 2 Report Point 3 Engineering Audit of Dust Control Measures - Scully Mines Level 2 Report Point 3 Engineering Audit of Dust Control Measures - Scully Mines Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Summary -- 2. Introduction -- 3. Background -- 4. Summary of Visits -- 5. Description of Plant Operations -- 5.1 Primary Crushing Plant -- 5.2 Classifier Building -- 5.3 Coarse Oar Bin -- 5.4 Grinding Bay -- 5.5 Spirals Section -- 5.6 Dryer Building -- 5.7 High Tension Building -- 5.8 Jones Plant -- 5.9 Concentrate Loadout -- 6. Miscellaneous Operations -- 6.1 Open Pits -- 6.2 Tailings Area -- 7. Observations -- 7.1 Primary Crushing Plant -- 7.2 Classifier Building -- 7.3 Coarse Oar Bin -- 7.4 Grinding Bay -- 7.5 Spirals -- 7.6 Dryer Building -- 7.7 High Tension Building -- 7.8 Jones Plant -- 7.9 Loadout -- 8. General Observations -- 9. Correlation between High Visual Dust Areas and One-Year Sampling Results -- 10. Recommendations
10. Level 2 Report Point 2 Inplant Dust Study - Scully Mines Level 2 Report Point 2 Inplant Dust Study - Scully Mines Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Summary -- 2. Introduction -- 3. General -- 4. Geology -- 5. Dust Sampling - Quartz Analysis System -- 5.1 Description of System -- 5.2 Inter-laboratory Comparison -- 5.3 Reproducibility of Results -- 6. Routine Sampling Methods and Results -- 6.1 Work Place and Occupation Codes -- 6.2 Fixed Station Sampling -- 6.3 Personal Sampling -- 6.4 Fibre Distribution (Optical) -- 6.5 Gases -- 6.6 Ionizing Radiation -- 7. Special Studies -- 7.1 Mineralogical and Chemical Analysis -- 7.2 Electron Microscope Fibre Analysis -- 7.3 Comparison of Occupational Dust Samplers -- 7.4 Total Airborne Dust -- 7.5 Comparison of Fixed Station Sampling with Personal Sampling -- 7.6 Size Distribution -- 7.7 Comparison of Ambient Sampling Techniques with Occupational Sampling Techniques -- 7.8 Dust Exposure Indices/Historical Dust Data Statistical Analyses -- 8. Recommendations for Future Sampling -- 8.1 Respirable Dust -- 8.2 Fibrous Particles -- 8.3 Gases -- 8.4 Ionizing Radiation -- 9. List of Appendices -- 10. List of Figures, Tables and Graphs
11. Level 1 report, executive summary, volume 2 Scully Mines, Wabush Level 1 report, executive summary, volume 2 Scully Mines, Wabush Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines 1. Summary -- 2. Introduction -- 2.1 Background and Terms of Reference -- 2.2 Study Methodology -- 3. Findings and Discussions -- 3.1 Inplant Dust Study -- 3.2 Engineering Audit -- 3.3 Medical Assessment -- 3.4 Ambient Air Study -- 3.5 Community Health Study -- 4. Conclusions and Recommendations -- 4.1 General -- 4.2 Inplant Dust Study -- 4.3 Engineering Audit -- 4.4 Medical Surveillance -- 4.5 Ambient Air Study -- 4.6 Community Health Study -- 5. Implementation -- 5.1 General -- 5.2 Proposed Implementation -- Appendix: Study Terms of Reference -- List of Contributors
12. Labrador West Dust Study. Level 1 report. Executive Summary, Volume 1 : Iron Ore Company of Canada, Labrador West Dust Study. Level 1 report. Executive Summary, Volume 1 : Iron Ore Company of Canada, Labrador City Dust--Newfoundland and Labrador--Labrador--Measurement; Mine dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines; 1. Summary -- 2. Introduction -- 2.1 Background and Terms of Reference -- 2.2 Study Methodology -- 3. Findings and Discussions -- 3.1 Inplant Dust Study -- 3.2 Engineering Audit -- 3.3 Medical Assessment -- 3.4 Ambient Air Study -- 3.5 Community Health Study -- 4. Conclusions and Recommendations -- 4.1 General -- 4.2 Inplant Dust Study -- 4.3 Engineering Audit -- 4.4 Medical Assessment -- 4.5 Ambient Air Study -- 4.6 Community Health Study -- 5. Implementation -- 5.1 General -- 5.2 Proposed Implementation -- Appendix: Study Terms of Reference -- List of Contributors
13. Errata and Addenda to Level 2 Reports, Scully Mines Errata and Addenda to Level 2 Reports, Scully Mines Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines Foreword -- Point II Inplant Dust Studies - Scully Mines -- A. Errata -- B. Addenda -- 1. Comparison of Fixed Station Sampling with Personal Sampling -- 2. Classification of Pneumoconiotics at Scully Mines by job and location -- Point III Engineering Audit - Scully Mines -- A. Errata -- Point IV Medical Studies of the Workforce - Scully Mines -- A. Errata -- B. Addenda -- 1. The Extent of Pneumoconiosis at Scully Mines - Sources for Diagnosed Cases and Discordance in Diagnosis -- 2. Prevalence of Rales in Those Admitting to and Denying Exposure to Asbestos -- 3. Selective Data on "New" Cases of Pneumoconiosis at Scully Mines -- 4. Adventitious Sounds in Self-Admitted Exposure to Asbestos at Scully Mines -- 5. Shortness of Breath in Relation to Smoking Habit at Scully -- 6. Analysis of Employees with Self-Admitted Exposure to Asbestos at Scully Mining Operations -- 7. Description of Employees with a Radiologic Appearance Compatible with Asbestosis (Irregular Opacities and/or Pleural Changes) at Scully -- 8. Description of Employees with Lung Biopsies at Scully -- 9. Comparison of Target to Tested Population at Scully Mines -- 10. Comments on the terms "Impairment" and "Disability" -- 11. Small Opacities by Profusion Group and Shape in Control Films in Point IV Phase B -- 12. Reader Variability by Years of Exposure at Scully Mines -- Point VI Community Health Survey - Wabush/Labrador City -- A. Errata
14. Errata and Addenda to Level 2 Reports, Iron Ore Company of Canada Errata and Addenda to Level 2 Reports, Iron Ore Company of Canada Dust--Newfoundland and Labrador--Labrador--Measurement; Mine Dusts; Iron mines and mining--Dust Control--Newfoundland and Labrador--Labrador; Iron mines and mining--Health aspects; Lungs--Dust diseases; Iron Ore Company of Canada; Scully Mines Foreword -- Point II Inplant Dust Studies - Iron Ore Company of Canada -- A. Errata -- B. Addenda -- 1. Comparison of Fixed Station Sampling with Personal Sampling -- 2. Classification of Pneumoconiotics at IOCC by job and location -- Point III Engineering Audit - Iron Ore Company of Canada -- A. Errata -- Point IV Medical Studies of the Workforce - Iron Ore Company of Canada -- A. Errata -- B. Addenda -- 1. The Extent of Pneumoconiosis at IOCC-Sources for Diagnosed Cases and Discordance in Diagnosis -- 2. Prevalence of Rales in Those Admitting to and Denying Exposure to Asbestos at IOCC -- 3. Selective Data on "New" Cases of Pneumoconiosis at IOCC -- 4. Adventitious Sounds in Self-Admitted Exposure to Asbestos at IOCC -- 5. Shortness of Breath in Relation to Smoking Habit at IOCC -- 6. Analysis of Employees with Self-Admitted Exposure to Asbestos at IOCC -- 7. Description of Employees with a Radiologic Appearance Compatible with Asbestosis (Irregular Opacities and/or Pleural Changes) at IOCC -- 8. Description of Employees with Lung Biopsies at IOCC -- 9. Comparison of Target to Tested Population at IOCC -- 10. Use of the Words "Impairment and Disability" -- 11. Small Opacities by Profusion Group and shape in Control Films in Point IV Phase B -- 12. Reader Variability by Years of Exposure at IOCC -- Point VI Community Health Survey - Wabush/Labrador City -- A. Errata
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