DOCSLIB.ORG

Integrated Mining and Preconcentration Systems for Nickel Sulfide Ores Trent William Weatherwax

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Integrated Mining and Preconcentration Systems for Nickel Sulfide Ores Trent William Weatherwax INTEGRATED MINING AND PRECONCENTRATION SYSTEMS FOR NICKEL SULFIDE ORES by TRENT WILLIAM WEATHERWAX BS Michigan Technological University, 2003 THESIS SUBMITTED IN PARTIAL FULFILMENT OF REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE STUDIES (Mining Engineering) THE UNIVERSITY OF BRITISH COLUMBIA December, 2007 © Trent William Weatherwax, 2007 Abstract As part of a strategic research initiative at UBC to design and evaluate integrated underground mining and mineral processing systems, work has been done to determine how to utilize the coarse rejects of pre-concentration in the underground environment. An amenability study for nine orebodies from four of Xstrata Nickel’s Ontario operations evaluated both processing and waste disposal methods. Metallurgically the orebodies showed amenability to dense media separation and conductivity sorting. The dense media results showed high mass rejections and high metal recoveries for all nine orebodies. Conductivity sorter results were not as consistent, but still showed good results. Dense media rejects were examined to determine the applicability of their use in rockfills and composite minefills. The geotechnical properties indicated that the rejects would provide a competent material for minefills. The mix designs were examined for both strength and rheological properties and showed that fills utilizing rejects were comparable to fills currently used by industry. Composite fills containing rejects had significantly lower void ratios, decreasing cement requirements for a given strength requirement. Conceptual designs for pre-concentration systems based on the metallurgical, reject characterization, and mix design were developed for each of the four mines in the study. The designs took into consideration the current mining plans. ii Table of Contents Abstract .........................................................................................................................ii Table of Contents ...............................................................................................................iii List of Tables......................................................................................................................vi List of Figures ...................................................................................................................vii Chapter 1 Introduction..................................................................................................... 1 1.1 Underground Preconcentration ........................................................................... 1 1.2 Objectives............................................................................................................2 1.3 The Mines and Ores of Xstrata Nickel................................................................ 2 1.4 Methodology .......................................................................................................4 Chapter 2 Experimental Procedure.................................................................................. 6 2.1 Introduction.........................................................................................................6 2.2 Sample Collecting and Classification ................................................................. 6 2.2.1 Sample Collecting....................................................................................... 6 2.2.1 Mineralogical and Physical Characterization..............................................6 2.3 Metallurgical Preconcentration Testing .............................................................. 7 2.3.1 Size Assay...................................................................................................7 2.3.2 Feed Preparation..........................................................................................7 2.3.3 Dense Media Separation.............................................................................. 7 2.3.4 Conductivity Sorting................................................................................... 9 2.4 Geotechnical Classification of Rejects.............................................................. 10 2.4.1 Particle Size Distribution .......................................................................... 10 2.4.2 Particle Shape............................................................................................11 2.4.3 Adsorption and Specific Gravity...............................................................11 2.4.4 Void Space ................................................................................................11 2.4.5 Hardness (Strength)................................................................................... 12 2.4.6 Chemical Composition.............................................................................. 12 2.5 Backfill Mix Evaluation....................................................................................12 2.5.1 Fill Mixing.................................................................................................12 2.5.2 Slump Testing ...........................................................................................13 2.5.3 UCS Cylinders and Testing....................................................................... 14 Chapter 3 Metallurgical Results .................................................................................... 15 3.1 Introduction................................................................................................... 15 3.2 Literature Review..............................................................................................15 3.2.1 Preconcentration Plants............................................................................. 15 3.2.1.1 Dense Media Separation........................................................................ 16 3.2.1.2 Ore Sorting............................................................................................17 3.2.2 Metallurgical Results from Preconcentration............................................19 3.3 Procedures.........................................................................................................21 3.4 Results and Discussion......................................................................................21 3.4.1 Mineralogical and Physical Characterization............................................21 3.4.2 Size Assay.................................................................................................23 3.4.3 Dense Media Separation............................................................................ 28 3.4.3.1 Overall Preconcentration....................................................................... 28 3.4.3.2 Precious Metal Recovery ......................................................................30 iii 3.4.3.3 MgO Rejection...................................................................................... 30 3.4.4 Conductivity Sorting................................................................................. 32 3.4.4.1 Overall Preconcentration....................................................................... 32 3.4.4.2 MgO Rejection...................................................................................... 34 3.5 Conclusions.......................................................................................................34 3.6 Recommendations.............................................................................................35 Chapter 4 Classification of Preconcentration Rejects.................................................... 36 4.1 Introduction.......................................................................................................36 4.2 Literature Review..............................................................................................36 4.2.1 Particle Size Distribution .......................................................................... 37 4.2.2 Particle Shape............................................................................................39 4.2.3 Void Ratio.................................................................................................40 4.2.4 Adsorption and Porosity............................................................................ 40 4.2.5 Specific Gravity.........................................................................................41 4.2.6 Hardness and Durability............................................................................ 41 4.2.7 Particle Strength........................................................................................42 4.2.8 Chemical Composition.............................................................................. 43 4.2.9 How to Compare Minefill Aggregate to Traditional Aggregate...............43 4.3 Procedures.........................................................................................................44 4.4 Results and Discussion......................................................................................44 4.4.1 Geotechnical Properties............................................................................. 44 4.4.1.1 Particle size distribution........................................................................ 47 4.4.1.2 Particle shape.........................................................................................49 4.4.1.3 Void Ratio .............................................................................................51 4.4.1.4 Adsorption and Porosity.......................................................................
Load more

Recommended publications
  • South Coast Air Quality Management District
    SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT Preliminary Draft Staff Report Proposed Amended Rule 1407 – Control of Emissions of Arsenic, Cadmium, and Nickel from Non-Chromium Metal Melting Operations June 2019 Deputy Executive Officer Planning, Rule Development and Area Sources Philip M. Fine, Ph.D. Assistant Deputy Executive Officer Planning, Rule Development and Area Sources Susan Nakamura Planning and Rules Manager Planning, Rule Development and Area Sources Michael Morris Author: Michael Morris – Planning and Rules Manager Contributors: John Anderson – Air Quality Analysis and Compliance Supervisor Jason Aspell – Enforcement Manager Yadira DeHaro-Hammock – Senior Air Quality Chemist Luke Eisenhardt – Air Quality Specialist Kennard Ellis – Air Quality Specialist (retired) Mike Garibay – Supervising Air Quality Engineer Marco Polo – Air Quality Engineer II Barbara Radlein – Program Supervisor Amanda Sanders – Supervising Air Quality Inspector Areio Soltani – Supervising Air Quality Inspector Paul Stroik – Air Quality Specialist Charles Tupac – Supervising Air Quality Engineer Uyen-Uyen Vo – Program Supervisor Bill Welch – Senior Air Quality Engineer Lisa Wong – Assistant Air Quality Specialist Reviewed by: Barbara Baird – Chief Deputy Counsel Stacey Pruitt – Senior Deputy District Counsel William Wong – Principal Deputy District Counsel SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT GOVERNING BOARD Chairman: DR. WILLIAM A. BURKE Speaker of the Assembly Appointee Vice Chairman: BEN BENOIT Council Member, Wildomar Cities of Riverside County MEMBERS: LISA BARTLETT Supervisor, Fifth District County of Orange JOE BUSCAINO Council Member, 15th District City of Los Angeles Representative MICHAEL A. CACCIOTTI Council Member, South Pasadena Cities of Los Angeles County/Eastern Region VANESSA DELGADO Senate Rules Committee Appointee JANICE HAHN Supervisor, Fourth District County of Los Angeles LARRY MCCALLON Mayor Pro Tem, Highland Cities of San Bernardino County JUDITH MITCHELL Mayor, Rolling Hills Estates Cities of Los Angeles County/Western Region V.
    [Show full text]
  • C:\Data\WP\F\199\199 Internet.Wpd
    Jonathan A. Hill, Bookseller, Inc. 325 West End Avenue, Apt. 10B New York City, New York, 10023-8145 Tel: 646 827-0724 Fax: 212 496-9182 E-mail: [email protected] Catalogue 199 Proofs Science, Medicine, Natural History, & Bibliography Selective Subject Index on Following Pages 8 JONATHAN A. HILL Selective Subject Index Aeronautics: 38 Agriculture: 78, 88 Alchemy: 19, 26, 27, 78 Americana: 35, 72, 82 Architecture: 17 Art: 9, 17 Artillery: 26, 27, 55, 86 Astrology: 82 Astronomy: 40, 44, 61, 62, 67, 70, 82 Auction Catalogues: 3-15, 63 Bibliography: 3-15, 29, 31, 33, 34, 39, 47, 51, 54, 57, 60, 63, 69, 71, 75, 76, 81, 83, 90, 98-100 Biography: 89 Biology: 30 Bookbinding: 57, 68 Botany: 35, 78, 83, 88, 91 Bridges: 49, 87 Canals: 49 Cartography: 20 Catalogues: 3-15, 29, 31, 33, 35, 39, 47, 51, 54, 63, 69, 71, 81, 83, 90, 99, 100 Ceramics: 9, 78 Chemistry: 1, 2, 19, 21, 22-24, 26, 27, 48, 53, 65, 66, 72, 74, 78, 85 Color Theory: 33 Comets: 70 Conchology: 13 Crystallography: 2 Dentistry: 58 Dibner items: 26, 27, 66 Dictionaries: 2, 47 Dyeing & Bleaching: 26, 27, 72, 94-96 Early Printed Books (before 1601): 1, 20, 26, 27, 79, 82, 92 Economics: 1, 16, 72, 80, 94-96 Electricity & Magnetism: 39, 40, 52, 55, 67, 70, 79 Engineering: 16, 18, 49, 72, 78, 87 Entomology: 30 Evolution: 30 Forests: 56 Gardens: 35, 78 CATALOGUE ONE HUNDRED & NINETY–NINE 9 Garrison-Morton items: 30 Gems: 78 Geology: 64. 78, 92 Geometry: 20 Glass: 26, 27, 93 History: 1, 17, 28, 80, 89 Hoover items: 18, 19, 64 Horology: 25, 37 Horticulture: 35 Hydraulics: 25, 41, 70, 78 Instruments:
    [Show full text]
  • A Transformed Business, Looking to the Future
    ACACIA MINING PLC A TraNSFORMED BUSINESS, LOOKING TO THE FUTURE AnnUal REPORT & AccOUNTS 2016 A nn U al RE P ORT & A cc OU N TS 2016 ACACIA MINING PLC The successful transformation of our business is nearly complete. Our strategy is yielding results and we can now begin to take a longer-term outlook. The future is bright for Acacia as we continue to unlock value through the following areas... …BY DEVELOPING OUR WOrld-class assets Underground mining with exciting potential For more information, visit our website: www.acaciamining.com p8 WHAT’S INSIDE STRATEGIC REPORT 2 GOVERNANCE 60 FINANCIAL STATEMENTS 109 Group at a glance 2 Governance overview 60 Independent auditors’ report Chairman’s statement 4 Board of Directors 62 on the consolidated financial statements 109 Our business model 6 Executive Leadership Team 66 Consolidated financial statements 114 Developing our world-class assets 8 Corporate governance report 67 Notes to the consolidated Expanding our exploration footprint 10 Committee reports 72 financial statements 119 Enhancing our stakeholder relations 12 Remuneration report 77 Independent auditors’ report on the parent company financial statements 157 Our strategy 14 Other information 97 Parent company financial statements 159 Chief Executive’s review 16 Directors’ responsibilities statement 102 Notes to the parent company Market overview 22 Reserves and resources 103 financial statements 163 Key performance indicators 24 Risk management 28 Principal risks and uncertainties 30 SHAREHOLDER INFORMATION 174 Glossary of terms 174 Shareholder enquiries 180 PERFORMANCE REVIEW 34 Operating review 34 Financial review 46 Sustainability review 52 …BY EXPANDING …BY ENHANCING OUR EXplorAtion footprint OUR STAKEHOLDER RELATIONS Targeting more high-value Continuing to invest in discoveries across Africa unearthing Africa’s potential p10 p12 ACACIA MINING PLC AnnUAL Report & AccoUnts 2016 1 GROUP AT A GLANCE We are the leading gold producer in Tanzania with a vision of becoming a leading gold miner across Africa.
    [Show full text]
  • 27. Amend Rule 219 – Equipment Not Requiring a Written Permit Pursuant
    BOARD MEETING DATE: May 5, 2017 AGENDA NO. 27 PROPOSAL: Amend Rule 219 – Equipment Not Requiring a Written Permit Pursuant to Regulation II; and Amend Rule 222 – Filing Requirements for Specific Emission Sources Not Requiring a Written Permit Pursuant to Regulation II SYNOPSIS: Proposed Amended Rule 219 will exempt certain categories of equipment from the requirement to obtain a written permit and remove existing exemptions for equipment that the SCAQMD has learned may not be able to demonstrate compliance with all SCAQMD rules, and will also provide clarification for sources or processes currently covered under Rule 219. Proposed Amended Rule 222 will add additional categories to the streamlined filing/registration program of Rule 222. Both proposed amendments will further facilitate the streamlining of the District’s permitting system. COMMITTEE: Stationary Source, March 17, 2017 and April 21, 2017 Reviewed RECOMMENDED ACTIONS: Adopt the attached resolution: 1. Determining that the proposed amendments to Rule 219 - Equipment Not Requiring a Written Permit Pursuant to Regulation II, and Rule 222 - Filing Requirements for Specific Emission Sources Not Requiring a Written Permit Pursuant to Regulation II, are exempt from requirements of the California Environmental Quality Act; 2. Amending Rule 219 – Equipment Not Requiring a Written Permit Pursuant to Regulation II; and 3. Amending Rule 222 – Filing Requirements for Specific Emission Sources Not Requiring a Written Permit Pursuant to Regulation II. Wayne Nastri Executive Officer PF:SN:TG:BG Background Rule 219 – Equipment Not Requiring a Written Permit Pursuant to Regulation II – identifies equipment, processes, and operations that emit small amounts of air contaminants or those where SCAQMD staff has determined that the particular source will meet requirements of existing SCAQMD rules and therefore a written permit is not needed.
    [Show full text]
  • NI 43-101 Updated Technical Report Pan Gold Project White Pine County, Nevada
    NI 43-101 Updated Technical Report Pan Gold Project White Pine County, Nevada Effective Date: June 30, 2017 Report Date: July 7, 2017 Report Prepared for And GRP Minerals Corp. Fiore Exploration Ltd 8310 South Valley Highway Suite 3123, Suite 180 595 Burrard Street Englewood, Colorado 80112 Vancouver, BC V7X 1J1 Report Prepared by SRK Consulting (U.S.), Inc. 5250 Neil Road, Suite 300 Reno, NV 89502 SRK Project Number: 493800.050 Signed by Qualified Persons: J. B. Pennington, M.Sc., C.P.G. Kent Hartley, P.E. Justin Smith, P.E., RM-SME. Deepak Malhotra, RM-SME Valerie Sawyer, RM-SME Brooke J. Miller, M.Sc., C.P.G. Reviewed by: John Tinucci, PhD, PE SRK Consulting (U.S.), Inc. NI 43-101 Updated Technical Report – Pan Project, NV Page ii Table of Contents 1 Summary ....................................................................................................................... 1 1.1 Property Description and Ownership .................................................................................................. 1 1.2 Geology and Mineralization ................................................................................................................ 2 1.3 Status of Exploration, Development and Operations .......................................................................... 3 1.3.1 Status of Operations and Development .................................................................................. 3 1.3.2 Restarting Pan and Achieving Commercial Production .......................................................... 3 1.3.3
    [Show full text]
  • Isakidd™ – 2020 Compendium of Technical Papers Contents
    2020 Compendium of Technical Papers Long the benchmark in the industry, IsaKidd™ accounts for over 13.6 mtpa of copper production from over 116 licensees world wide, including Glencore’s own operations. We provide clients with a comprehensive range of technology, process support and core equipment to ensure long term operational and economic success.” IsaKidd™ at a Glance > IsaKidd™ Technology is focused on delivering quality products and services to its customers whilst continuously working on technical innovations and developments to address the ever changing needs of the market. > Since development and commercialisation in the early 1980s, both ISA and KIDD technologies have undergone continuous improvement and today are regarded as the benchmark technologies for high intensity copper electro-refining and electro-winning operations. > Significant advancements have been achieved with both the stainless steel cathode technology and the electrode handling equipment used in copper tankhouses. For more: [email protected] Tel +61 7 3833 8500 IsaKidd™ – 2020 Compendium of Technical Papers Contents Copper Refinery Modernisation, Mopani Copper Mines Plc, Mufulira, Zambia ................................................................................................................... 2 Mount Isa Mines Necessity Driving Innovation ........................................................................................................................................................................................... 12 Current Distribution
    [Show full text]
  • Driving Operational Excellence…
    Annual Report & Accounts 2013 STRATEGIC REPORT STRATEGIC Driving operational excellence… Annual Report and Accounts 2013 3 STRATEGIC REPORT Group at a glance 1 … through a sharper focus Chairman’s statement 2 Chief Executive Of!cer’s report 4 on asset optimisation Strategy and business model 6 Year in review 8 Operational Review 10 & tighter control of Senior leadership 12 Outlook 13 costs we are creating Key performance indicators 14 Operating review 16 Exploration review 22 a stronger business Financial review 25 Corporate responsibility 34 GOVERNANCE Forward-looking statements Letter from the Chairman 38 This Annual Report includes “forward-looking statements” that express or imply expectations of future events or results. Forward-looking statements are statements that Board of Directors 39 are not historical facts. These statements include, without limitation, !nancial projections Senior management 42 and estimates and their underlying assumptions, statements regarding plans, objectives and expectations with respect to future production, operations, costs, projects, and Corporate governance report 44 statements regarding future performance. Forward-looking statements are generally Committee reports 49 identi!ed by the words “plans,” “expects,” “anticipates,” “believes,” “intends,” “estimates” and other similar expressions. All forward-looking statements involve a Remuneration report 56 number of risks, uncertainties and other factors, many of which are beyond the control of ABG, which could cause actual results and developments to
    [Show full text]
  • A Stronger Future Together ACACIA MINING PLC ANNUAL REPORT & ACCOUNTS 2018 Acacia Mining Plc Annual Report & Accounts 2018
    A stronger future together ACACIA MINING PLC ANNUAL REPORT & ACCOUNTS 2018 Acacia Mining plc Annual Report & Accounts 2018 Strategic report Governance Group at a glance 1 Governance overview 70 Our lasting legacy 4 Board of Directors 72 CEO statement 10 Executive Leadership Team 74 Q&A with the Independent Interim Chair 16 Corporate governance report 75 Market overview 18 Committee reports 80 Our business model 22 Remuneration report 87 Our strategy 24 Other information 102 Key performance indicators 26 Directors’ responsibilities statement 106 Risk management 30 Reserves and resources 107 Principal risks and uncertainties 32 Financial statements Performance review Independent Auditors’ report to the Operating review 36 members of Acacia Mining plc 112 Financial review 50 Consolidated financial statements 119 Sustainability review 56 Notes to the consolidated financial statements 124 Parent company financial statements 164 Notes to the parent company financial statements 168 Shareholder information Glossary of terms 179 Shareholder enquiries 185 STRATEGIC REPORT STRATEGIC At the core of Acacia are excellent assets and great people and, while we continue to work through the uncertain operating environment, we maintain a strong focus over what we can control. We have demonstrated our commitment Acacia is one of the to manage the business, develop our largest gold producers in Africa. We have three people and build long-term partnerships mines, all located in north-west Tanzania, and with our local communities, governments a portfolio of exploration projects across the and other key stakeholders. continent. Operating performance Exploration and development SEE PAGE 36 SEE PAGE 44 Strong cost discipline Sustainability and partnerships SEE PAGE 50 SEE PAGE 56 ACACIA MINING PLC ANNUAL REPORT & ACCOUNTS 2018 1 Highlights Over the past year Acacia has successfully stabilised the business with a focus on optimising operational performance.
    [Show full text]
  • Silver and Gold Coating
    Copyright © Tarek Kakhia. All rights reserved. http://tarek.kakhia.org Gold & Silver Coatings By A . T . Kakhia 1 Copyright © Tarek Kakhia. All rights reserved. http://tarek.kakhia.org 2 Copyright © Tarek Kakhia. All rights reserved. http://tarek.kakhia.org Part One General Knowledge 3 Copyright © Tarek Kakhia. All rights reserved. http://tarek.kakhia.org 4 Copyright © Tarek Kakhia. All rights reserved. http://tarek.kakhia.org Aqua Regia ( Royal Acid ) Freshly prepared aqua regia is colorless, Freshly prepared aqua but it turns orange within seconds. Here, regia to remove metal fresh aqua regia has been added to these salt deposits. NMR tubes to remove all traces of organic material. Contents 1 Introduction 2 Applications 3 Chemistry 3.1 Dissolving gold 3.2 Dissolving platinum 3.3 Reaction with tin 3.4 Decomposition of aqua regia 4 History 1 - Introduction Aqua regia ( Latin and Ancient Italian , lit. "royal water"), aqua regis ( Latin, lit. "king's water") , or nitro – hydro chloric acid is a highly corrosive mixture of acids, a fuming yellow or red solution. The mixture is formed by freshly mixing concentrated nitric acid and hydro chloric acid , optimally in a volume ratio of 1:3. It was named 5 Copyright © Tarek Kakhia. All rights reserved. http://tarek.kakhia.org so because it can dissolve the so - called royal or noble metals, gold and platinum. However, titanium, iridium, ruthenium, tantalum, osmium, rhodium and a few other metals are capable of with standing its corrosive properties. IUPAC name Nitric acid hydro chloride Other names aqua regia , Nitro hydrochloric acid Molecular formula HNO3 + 3 H Cl Red , yellow or gold Appearance fuming liquid 3 Density 1.01–1.21 g / cm Melting point − 42 °C Boiling point 108 °C Solubility in water miscible in water Vapor pressure 21 mbar 2 – Applications Aqua regia is primarily used to produce chloro auric acid, the electrolyte in the Wohl will process.
    [Show full text]
  • Do the Fires of Hell Come from God? (Part III)” #881 – August 30, 2015
    “Do the Fires of Hell Come From God? (Part III)” #881 – August 30, 2015 Do the Fires of Hell Come From God? (Part III) Acts 3:23: (NASB) And it will be that every soul that does not heed that prophet shall be utterly destroyed from among the people. The world is messed up. If you believe in God, then you most likely believe in some sort of ultimate justice system. The question is, what does God’s system of justice consist of – what kind of penalty? For generations, the majority of Christianity has believed in a hell of fire and torment as the answer to this question. However, there is a mountain of biblical evidence to the contrary. Today we will embark on Part III of our series that examines this evidence. We will look at some of the really difficult and seemingly contradictory Scriptures that talk about the condition of those who were evil in this life. Do they go to hell? Is there fire and torment in hell? “Do the Fires of Hell Come From God (Part I)” on June 7, 2015 examined the biblical phrase weeping (or wailing ) and gnashing of teeth , with the conclusion that its meaning was focusing on deep heartbreaking sorrow and anguish coupled with consternation, anger and pain at a GREAT loss. This reaction never applied to any eternal torment or torture – only to the loss of opportunity of God’s favor at one time or another. “Do the Fires of Hell Come From God (Part II)” on July 26, 2015 examined the Greek word Gehenna, meaning the Valley of Hinnom, a word often translated as hellfire .
    [Show full text]
  • Bradda Head Holdings Limited and Beaumont Cornish Limited
    02_261407 Bradda Head_pp01_pp17.qxp 08/07/2021 21:33 Page 1 THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION. If you are in any doubt about the contents of this document or as to what action you should take, you should seek your own personal advice immediately from your stockbroker, bank manager, solicitor, accountant or other independent financial adviser who specialises in advising on the acquisition of shares and other securities and is authorised under FSMA if you are resident in the UK, or, if you are not resident in the UK, from another authorised independent adviser. This document does not comprise a prospectus within the meaning of section 85 of FSMA and does not constitute an offer of transferable securities to the public in the United Kingdom within the meaning of section 102B of FSMA, and has not been approved or examined by and will not be filed with the FCA or the London Stock Exchange, but comprises an admission document in relation to AIM. It has been drawn up in accordance with the AIM Rules for Companies and has been issued in connection with the proposed admission to trading on AIM of the Enlarged Share Capital. The Company and its Directors whose names appear on page 6 of this document, accept responsibility, collectively and individually, for the information contained in this document and for compliance with the AIM Rules for Companies. To the best of the knowledge and belief of the Company and the Directors, who have taken all reasonable care to ensure that such is the case, the information contained in this document is in accordance with the facts and does not omit anything likely to affect the import of such information.
    [Show full text]
  • Control of Emissions of Arsenic, Cadmium, and Nickel from Non- Chromium Metal Melting Operations
    BOARD MEETING DATE: September 6, 2019 AGENDA NO. 24 PROPOSAL: Certify Final Environmental Assessment and Amend Rule 1407 – Control of Emissions of Arsenic, Cadmium, and Nickel from Non- Chromium Metal Melting Operations Staff is recommending that the public hearing on this item be continued to the October 4, 2019 Board Hearing. SYNOPSIS: Proposed Amended Rule 1407 applies to non-chromium metal melting operations and is designed to reduce emissions of arsenic, cadmium, and nickel. The proposed amended rule revises emission standards, enhances monitoring provisions for pollution control equipment, adds building enclosure provisions to limit fugitive emissions, and updates housekeeping, source testing, and monitoring, recordkeeping, and reporting requirements. COMMITTEE: No Committee Review RECOMMENDED ACTIONS: Adopt the attached Resolution: 1. Certifying the Final Environmental Assessment for Proposed Amended Rule 1407 – Control of Emissions of Arsenic, Cadmium, and Nickel from Non-Chromium Metal Melting Operations; and 2. Amending Rule 1407 – Control of Emissions of Arsenic, Cadmium, and Nickel from Non-Chromium Metal Melting Operations. Wayne Nastri Executive Officer PMF:SN:MM:UV Background Rule 1407 – Control of Emissions of Arsenic, Cadmium and Nickel from Non-Ferrous Metal Melting Operations, (Rule 1407) was adopted on July 8, 1994 and is designed to implement the CARB Airborne Toxics Control Measure for non-ferrous metal melting. Rule 1407 controls emissions of arsenic, cadmium, and nickel from non-ferrous metal melting, which includes aluminum, brass, and bronze melting operations. Proposed Amended Rule (PAR) 1407 expands the applicability of the rule to non-chromium metals, which includes non-ferrous metals and carbon steel. Non-chromium metals are metals that contain less than 0.5 percent by weight total chromium content.
    [Show full text]