Golden Star Resources Ltd

Total Page:16

File Type:pdf, Size:1020Kb

Load more

GOLDEN STAR RESOURCES LTD. Annual Information Form For the Year Ended December 31, 2018 DATED: March 29, 2019 TABLE OF CONTENTS About Information in This Annual Information Form ............................................................................................................. 3 Cautionary Note Regarding Forward-Looking Information ................................................................................................... 3 Cautionary Note Regarding Mineral Reserves and Mineral Resources ..................................................................................... 6 Cautionary Note to U.S. Investors .............................................................................................................................................. 6 Currency Presentation and Exchange Rate Information .......................................................................................................... 7 Corporate Structure ..................................................................................................................................................................... 7 Note on Share References ............................................................................................................................................................ 8 General Development of the Business ......................................................................................................................................... 8 Overview of Golden Star ............................................................................................................................................................ 8 Three Year History ..................................................................................................................................................................... 9 2016 ........................................................................................................................................................................................ 9 2017 ...................................................................................................................................................................................... 10 2018 ...................................................................................................................................................................................... 10 Description of the Business ......................................................................................................................................................... 11 Gold Sales and Production ........................................................................................................................................................11 Gold Price History .....................................................................................................................................................................11 Business Strategy and Development ........................................................................................................................................ 12 Customers ............................................................................................................................................................................. 12 Employees ............................................................................................................................................................................ 13 Competition .......................................................................................................................................................................... 13 Seasonality ........................................................................................................................................................................... 13 Mining in Ghana ......................................................................................................................................................................... 13 Operations in Ghana ................................................................................................................................................................. 13 Ghanaian Ownership and Special Rights ................................................................................................................................. 14 Oversight of Foreign Operating Entities .................................................................................................................................. 16 Ghanaian Royalty ..................................................................................................................................................................... 17 Ghanaian Corporate Tax ........................................................................................................................................................... 17 Environmental and other Laws and Regulations ...................................................................................................................... 17 Corporate Social Responsibility ............................................................................................................................................... 19 Description of the Properties ..................................................................................................................................................... 21 Map of Operations and Properties ............................................................................................................................................ 21 Golden Star Material Properties ............................................................................................................................................... 21 Technical Reports ................................................................................................................................................................. 21 Wassa Gold Mine ................................................................................................................................................................. 22 Bogoso/Prestea Gold Mine ................................................................................................................................................... 31 Consolidated Mineral Reserve and Mineral Resource Estimations .......................................................................................... 48 Consolidated Mineral Reserves ............................................................................................................................................ 48 Consolidated Measured and Indicated Mineral Resources ................................................................................................... 49 Consolidated Inferred Mineral Resources ............................................................................................................................ 50 Risk Factors ................................................................................................................................................................................ 51 General Risks ....................................................................................................................................................................... 51 Governmental and Regulatory Risks .................................................................................................................................... 61 Market Risks ........................................................................................................................................................................ 65 Dividend Policy and Payment.................................................................................................................................................... 69 Legal Proceedings and Regulatory Actions .............................................................................................................................. 69 Capital Structure ........................................................................................................................................................................ 69 Market for Golden Star Securities ............................................................................................................................................ 72 Directors and Officers ................................................................................................................................................................ 73 Directors ................................................................................................................................................................................... 73 Executive Officers .................................................................................................................................................................... 77 Cease Trade Orders, Bankruptcies, Penalties or Sanctions ...................................................................................................... 78 Conflict Of Interest ................................................................................................................................................................... 79 Internal Controls ......................................................................................................................................................................
Recommended publications
  • Palm Oil Mill (POM) with a Maximum Capacity of 60 MT/ Hr at Daboase in the Wassa East District, Western Region : Plantations SOCFINAF Ghana (PSG) Limited

    Palm Oil Mill (POM) with a Maximum Capacity of 60 MT/ Hr at Daboase in the Wassa East District, Western Region : Plantations SOCFINAF Ghana (PSG) Limited

    Environmental and Social Impact Statement (ESIS) for the Proposed Palm Oil Mill (POM) with a maximum capacity of 60 MT/ hr at Daboase in the Wassa East District, Western Region : Plantations SOCFINAF Ghana (PSG) Limited EXECUTIVE SUMMARY General Overview This document presents the Environmental and Social Impact Statement (ESIS) for a proposed Palm Oil Mill (POM) with a maximum capacity of 60 metric tonnes per hour (MT/ hr) to be located on a six (6) hectares (ha) parcel of land near Daboase in the Wassa East District of the Western Region of Ghana. Plantations Socfinaf Ghana (PSG) Limited, a registered Ghanaian Company of the SOCFIN Group and a major player in sustainable commercial oil palm and rubber plantations in Ghana, will develop the Proposed Project. PSG acquired 18,000 ha of land through the divestiture of the defunct Subri Industrial Plantations in the then Mpohor Wassa East District 1 of the Western Region. PSG has established approximately 6,000 hectares (ha) of oil palm plantation since 2012, which has contributed significantly to rural wealth and employment creation in its operational area. PSG’s intention is to install a state -of-the-art processing mill to process palm fresh fruit bunch (FFB) into crude palm oil (CPO) for export. The implementation of the Proposed POM will help bridge the deficit that exists in the production of CPO in Ghana 2 and generate more revenue through foreign exchange and payment of taxes to improve the Ghanaian economy. The implementation of the Proposed POM will also generate more jobs and ensure a sustainable social cohesion within the nearby communities.
  • PPA Public Affairs | 7/1/2016 [PDF]

    PPA Public Affairs | 7/1/2016 [PDF]

    Vol. 7, Issue 4 Public Procurement Authority: Electronic Bulletin May—Jun 2016 E-Bulletin Public Procurement Authority Accounting For Efficiency & Transparency in the Public Procurement System-The Need For Functional Procurement Units Inside this i s s u e : Editorial : Ac- counting For Efficiency &Transparency —Functional Procurement Units Online Activities : Page 2 Challenges With Establishing Functional Pro- curement Units Page 4 & 5 Corruption Along the Public Pro- curement Cycle - Page 6 & 7 (Continued on page 5) Public Procurement (Amendment) Bill, 2015 Passed. More Details Soon ………. Page 1 Public Procurement Authority: Electronic Bulletin July— Aug 2016 Vol. 7, Issue 4 Online Activities List of entities that have submitted their 2016 Procurement Plans Online As At June 30 , 2016 1. Abor Senior High School 58. Fanteakwa District Assembly 2. Accra Polytechnic 59. Fisheries Commission 3. Accra College of Education 60. Foods and Drugs Board 4. Adiembra Senior High School 61. Forestry Commission 5. Adisadel College 62. Ga South Municipal Assembly 6. Aduman Senior High School 63. Ghana Aids Commission 7. Afadzato South District Assembly 64. Ghana Airports Company Limited 8. Agona West Municipal Assembly 65. Ghana Atomic Energy Commission 9. Ahantaman Senior High Schoolool 66. Ghana Audit Service 10. Akatsi South District Assembly 67. Ghana Book Development Council 11. Akatsi College of Education 68. Ghana Broadcasting Corporation 12. Akim Oda Government Hospital 69. Ghana Civil Aviation Authority 13. Akokoaso Day Senior High School 70. Ghana Cocoa Board 14. Akontombra Senior High School 71. Ghana College of Physicians and Surgeons 15. Akrokerri College of Education 72. Ghana Cylinder Manufacturing Company Limited 16. Akuse Government Hospital 73.
  • Local Economic Development and Growth Strategy for Wassa East District Assembly

    Local Economic Development and Growth Strategy for Wassa East District Assembly

    Local Economic Development and Growth Strategy for Wassa East District Assembly Poultry Farm, Western Region, Ghana, June 2018 (Photo Credit: WAGES) Prepared for World University Service of Canada April 2018 By Dr. Steve Manteaw and Nicholas Adamtey Contents List of Tables............................................................................................................................................... iii List of Plates ............................................................................................................................................... iii Acronyms..................................................................................................................................................... iv EXECUTIVE SUMMARY ........................................................................................................................... 6 1.0 INTRODUCTION .......................................................................................................................... 10 1.1 Background and Purpose of the assignment ...................................................................... 10 1.2 The Wassa East District Assembly ....................................................................................... 11 1.2.1 Geographical Features ........................................................................................................... 11 1.3 Purpose of the Assignment .................................................................................................... 12 1.4 Scope
  • Table of Contents

    Table of Contents

    Table of Contents Page LIST OF ACRONYMS a EXECUTIVE SUMMARY I 1.0 Introduction 1 1.1 Scope of Study 1 1.2 Background – Volta River Authority 2 1.3 Proposed Aboadze-Volta Transmission Line Project (AVTP) 3 1.4 Legal, Regulatory and Policy Considerations 5 1.5 Future developments by VRA 8 2.0 Description of proposed development 10 2.1 Pre-Construction Activities 11 2.2 Construction Phase Activities 12 2.3 Operational Phase Activities 17 2.3.1 Other Operational Considerations 20 3.0 Description of Existing Environments 21 3.1 Bio-Physical Environment 21 3.1.1 Climate 21 3.1.2 Flora 25 3.1.3 Fauna 35 3.1.4 Water Resources 43 3.1.5 Geology and Soils 44 3.1.6 General Land Use 51 3.2 Socio-Economic/Cultural Environment 51 3.2.1 Methodology 53 3.2.2 Profiles of the Districts in the Project Area 54 3.2.2(a) Shama - Ahanta East Metropolitan Area 54 3.2.2(b) Komenda - Edina - Eguafo - Abirem (KEEA) District 58 i 3.2.2(c) Mfantseman District 61 3.2.2(d) Awutu-Effutu-Senya District 63 3.2.2(e) Tema Municipal Area 65 3.2.2(f) Abura-Asebu-Kwamankese 68 3.2.2(g) Ga District 71 3.2.2(h) Gomoa District 74 3.3 Results of Socio-Economic Surveys 77 (Communities, Persons and Property) 3.3.1 Information on Affected Persons and Properties 78 3.3.1.1 Age Distribution of Affected Persons 78 3.3.1.2 Gender Distribution of Affected Persons 79 3.3.1.3 Marital Status of Affected Persons 80 3.3.1.4 Ethnic Composition of Afected Persons 81 3.3.1.5 Household Size/Dependents of Affected Persons 81 3.3.1.6 Religious backgrounds of Affected Persons 82 3.3.2 Economic Indicators
  • Ghana Gazette

    Ghana Gazette

    GHANA GAZETTE Published by Authority CONTENTS PAGE Facility with Long Term Licence … … … … … … … … … … … … 1236 Facility with Provisional Licence … … … … … … … … … … … … 201 Page | 1 HEALTH FACILITIES WITH LONG TERM LICENCE AS AT 12/01/2021 (ACCORDING TO THE HEALTH INSTITUTIONS AND FACILITIES ACT 829, 2011) TYPE OF PRACTITIONER DATE OF DATE NO NAME OF FACILITY TYPE OF FACILITY LICENCE REGION TOWN DISTRICT IN-CHARGE ISSUE EXPIRY DR. THOMAS PRIMUS 1 A1 HOSPITAL PRIMARY HOSPITAL LONG TERM ASHANTI KUMASI KUMASI METROPOLITAN KPADENOU 19 June 2019 18 June 2022 PROF. JOSEPH WOAHEN 2 ACADEMY CLINIC LIMITED CLINIC LONG TERM ASHANTI ASOKORE MAMPONG KUMASI METROPOLITAN ACHEAMPONG 05 October 2018 04 October 2021 MADAM PAULINA 3 ADAB SAB MATERNITY HOME MATERNITY HOME LONG TERM ASHANTI BOHYEN KUMASI METRO NTOW SAKYIBEA 04 April 2018 03 April 2021 DR. BEN BLAY OFOSU- 4 ADIEBEBA HOSPITAL LIMITED PRIMARY HOSPITAL LONG-TERM ASHANTI ADIEBEBA KUMASI METROPOLITAN BARKO 07 August 2019 06 August 2022 5 ADOM MMROSO MATERNITY HOME HEALTH CENTRE LONG TERM ASHANTI BROFOYEDU-KENYASI KWABRE MR. FELIX ATANGA 23 August 2018 22 August 2021 DR. EMMANUEL 6 AFARI COMMUNITY HOSPITAL LIMITED PRIMARY HOSPITAL LONG TERM ASHANTI AFARI ATWIMA NWABIAGYA MENSAH OSEI 04 January 2019 03 January 2022 AFRICAN DIASPORA CLINIC & MATERNITY MADAM PATRICIA 7 HOME HEALTH CENTRE LONG TERM ASHANTI ABIREM NEWTOWN KWABRE DISTRICT IJEOMA OGU 08 March 2019 07 March 2022 DR. JAMES K. BARNIE- 8 AGA HEALTH FOUNDATION PRIMARY HOSPITAL LONG TERM ASHANTI OBUASI OBUASI MUNICIPAL ASENSO 30 July 2018 29 July 2021 DR. JOSEPH YAW 9 AGAPE MEDICAL CENTRE PRIMARY HOSPITAL LONG TERM ASHANTI EJISU EJISU JUABEN MUNICIPAL MANU 15 March 2019 14 March 2022 10 AHMADIYYA MUSLIM MISSION -ASOKORE PRIMARY HOSPITAL LONG TERM ASHANTI ASOKORE KUMASI METROPOLITAN 30 July 2018 29 July 2021 AHMADIYYA MUSLIM MISSION HOSPITAL- DR.
  • Cape Saint Paul Wilt Disease of Coconut in Ghana: Surveillance and Management of Disease Spread

    Cape Saint Paul Wilt Disease of Coconut in Ghana: Surveillance and Management of Disease Spread

    AGRONOMIE – ENVIRONNEMENT Cape Saint Paul Wilt Disease of coconut in Ghana: surveillance and management of disease spread 1 Joe NKANSAH-POKU Abstract: 2 The Cape Saint Paul Wilt Disease (CSPWD), a lethal-yellowing type disease of coconut has René PHILIPPE been in Ghana since 1932. Aerial and/or ground surveys were undertaken to assess the current status 1 Robert Nketsia QUAICOE of the disease spread. The survey showed that the spread of the disease for the past 5 years has mainly 1 Sylvester Kuuna DERY been the expansion of existing foci. However, new outbreaks were identified at Glidzi in the Volta, Arthur RANSFORD3 Bawjiase and Efutu Breman in Central regions. After the resurgence in the Volta region in 1995, the Woe-Tegbi-Dzelukope corridor has remained endemic, but less aggressive. Pockets of healthy groves re- 1 CSIR – OPRI, Coconut Programme, main along all the coastline and inland of known disease zones. Eradication of diseased palms at P.O. Box 245, Sekondi, Ghana Ampain focus lying just about 60 km to the Ivorian border, and disease situations on new replanting <[email protected]> with MYD × VTT hybrid are discussed. 2 UPR 29, CIRAD – BIOS, Key words: Cape Saint Paul Wilt Disease, coconut, aerial survey, disease management Campus Int de Baillarguet, 34398 Montpellier, France 3 CSDP, Ministry of Food & Agriculture, P.O. Box 245, Sekondi, Ghana The Cape Saint Paul Wilt Disease (CSPWD), a McCoy et al. [5] pointed out that most second- disease situation on new replanting plots with lethal-yellowing type disease of coconut has ary spread of lethal yellowing disease occurs the hybrid, MYD × VTT.
  • Guyanor Ressources S.A

    Guyanor Ressources S.A

    GUYANOR RESSOURCES S.A. GUYANOR RESSOURCES SA ANNUAL REPORT TO SHAREHOLDERS 2004 MANAGEMENT OF THE COMPANY List of the directors and officers as of April 25, 2005 1,2,3 Golden Star Resources Ltd. Jean-Pierre Prévôt President, Guyanor Ressources S.A. - Co-Director of Rhums Prévôt (rum distilling), - Former President, Chamber of Commerce and Industry of French Guiana Cayenne, French Guiana James H. Dunnett Directeur-Général, Guyanor Ressources S.A. George Town, Grand Cayman, Cayman Islands 2 Peter J. Bradford President and CEO Golden Star Resources Ltd. Bogoso, Ghana 2, 3 Donald R. Getty President and Chief Executive Officer, Sunnybank Investments Ltd. Edmonton, Alberta, Canada Ian L. Boxall Businessman George Town, Grand Cayman, Cayman Islands (1) Under French corporate law, it is permissible for a company to be a director of another company including of its subsidiary. Allan J. Marter, Senior Vice President and Chief Financial Officer of Golden Star, has been designated by Golden Star Resources Ltd. as its permanent representative in connection with proceedings of the directors of the Company. (2) Member of the Compensation Committee. (3) Member of the Audit and Corporate Governance Committee. 1 Stock Exchange Listing Nouveau Marché of the Bourse de Paris Toronto Stock Exchange Symbol: GOR Symbol: GRL.T Registrar and Transfer Agent Questions regarding the change of stock ownership, consolidation of accounts, lost certificates, change of address and other such matters should be directed to: BNP Paribas Securities Services CIBC Mellon Trust
  • Western Region Eastern Region

    Western Region Eastern Region

    Public Disclosure Authorized GHANA WATER COMPANY LIMITED (Urban Water Project) Assessment of Resettlement Related Issues on the SYIP in Area 2 Public Disclosure Authorized ASHANTI REGION WESTERN REGION EASTERN REGION PHASE 2 Public Disclosure Authorized (WESTERN REGION) RESETTLEMENT ACTION PLAN REVISED Public Disclosure Authorized SAL Consult Limited, P O Box GP20200, Accra August 2011 SAL Consult Ltd GWCL/PMU TABLE OF CONTENTS ABBREVIATIONS AND ACRONYMS ........................................................................................................................ III EXECUTIVE SUMMARY .......................................................................................................................................... IV 1.0 DESCRIPTION OF PROJECT AND IMPACTS .................................................................................................. 1 1.1 PROJECT DESCRIPTION ....................................................................................................................................... 1 1.1 OBJECTIVES ...................................................................................................................................................... 2 2.0 DESCRIPTION OF THE WESTERN REGION PROJECT AND IMPACTS ............................................................. 5 2.1 PROJECT COMPONENTS AND BENEFICIARY TOWNS .................................................................................................. 5 2.1.1 Axim ........................................................................................................................................................
  • Golden Star Resources Ltd

    Golden Star Resources Ltd

    GOLDEN STAR RESOURCES LTD. FORM 10-K (Annual Report) Filed 03/29/00 for the Period Ending 12/31/99 Telephone 416 583 3800 CIK 0000903571 Symbol GSS SIC Code 1040 - Gold And Silver Ores Industry Gold & Silver Sector Basic Materials Fiscal Year 12/31 http://www.edgar-online.com © Copyright 2014, EDGAR Online, Inc. All Rights Reserved. Distribution and use of this document restricted under EDGAR Online, Inc. Terms of Use. GOLDEN STAR RESOURCES LTD FORM 10-K (Annual Report) Filed 3/29/2000 For Period Ending 12/31/1999 Address 10901 WEST TOLLER DRIVE SUITE 300 LITTLETON, Colorado 80127 Telephone 303-830-9000 CIK 0000903571 Industry Gold & Silver Sector Basic Materials Fiscal Year 12/31 SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year ended December 31, 1999 Commission file number 0-21708 GOLDEN STAR RESOURCES LTD. (Exact Name of Registrant as Specified in Its Charter) Canada 98-0101955 (State or other Jurisdiction of (I.R.S. Employer Incorporation or Organization) Identification No.) 1660 Lincoln Street, Suite 3000 Denver, Colorado 80264-3001 (Address of Principal Executive Office) (Zip Code) (303) 830-9000 (Registrant's telephone number, including area code) Securities registered or to be registered pursuant to Section 12 (b) of the Act: Name of Exchange Title of Each Class on which Registered ------------------- ------------------- Common Shares American Stock Exchange Toronto Stock Exchange Securities registered or
  • Ghana Poverty Mapping Report

    Ghana Poverty Mapping Report

    ii Copyright © 2015 Ghana Statistical Service iii PREFACE AND ACKNOWLEDGEMENT The Ghana Statistical Service wishes to acknowledge the contribution of the Government of Ghana, the UK Department for International Development (UK-DFID) and the World Bank through the provision of both technical and financial support towards the successful implementation of the Poverty Mapping Project using the Small Area Estimation Method. The Service also acknowledges the invaluable contributions of Dhiraj Sharma, Vasco Molini and Nobuo Yoshida (all consultants from the World Bank), Baah Wadieh, Anthony Amuzu, Sylvester Gyamfi, Abena Osei-Akoto, Jacqueline Anum, Samilia Mintah, Yaw Misefa, Appiah Kusi-Boateng, Anthony Krakah, Rosalind Quartey, Francis Bright Mensah, Omar Seidu, Ernest Enyan, Augusta Okantey and Hanna Frempong Konadu, all of the Statistical Service who worked tirelessly with the consultants to produce this report under the overall guidance and supervision of Dr. Philomena Nyarko, the Government Statistician. Dr. Philomena Nyarko Government Statistician iv TABLE OF CONTENTS PREFACE AND ACKNOWLEDGEMENT ............................................................................. iv LIST OF TABLES ....................................................................................................................... vi LIST OF FIGURES .................................................................................................................... vii EXECUTIVE SUMMARY ........................................................................................................
  • Golden Rules Making the Case for Responsible Mining

    Golden Rules Making the Case for Responsible Mining

    GOLDEN RULES Making the case for responsible mining A REPORT BY EARTHWORKS AND OXFAM AMERICA Contents Introduction: The Golden Rules 2 Grasberg Mine, Indonesia 5 Yanacocha Mine, Peru, and Cortez Mine, Nevada 7 BHP Billiton Iron Ore Mines, Australia 9 Hemlo Camp Mines, Canada 10 Mongbwalu Mine, the Democratic Republic of Congo 13 Rosia Montana Mine, Romania 15 Marcopper Mine, the Philippines, and Minahasa Raya and Batu Hijau Mines, Indonesia 17 Porgera Gold Mine, Papua New Guinea 18 Junín Mine, Ecuador 21 Akyem Mine, Ghana 22 Pebble Mine, Alaska 23 Zortman-Landusky Mine, Montana 25 Bogoso/Prestea Mine, Ghana 26 Jerritt Canyon Mine, Nevada 27 Summitville Mine, Colorado 29 Following the rules: An agenda for action 30 Notes 31 Cover: Sadiola Gold Mine, Mali | Brett Eloff/Oxfam America Copyright © EARTHWORKS, Oxfam America, 2007. Reproduction is permitted for educational or noncommercial purposes, provided credit is given to EARTHWORKS and Oxfam America. Around the world, large-scale metals mining takes an enormous toll on the health of the environment and communities. Gold mining, in particular, is one of the dirtiest industries in the world. Massive open-pit mines, some measuring as much as two miles (3.2 kilometers) across, generate staggering quantities of waste—an average of 76 tons for every ounce of gold.1 In the US, metals mining is the leading contributor of toxic emissions to the environment.2 And in countries such as Ghana, Romania, and the Philippines, mining has also been associated with human rights violations, the displacement of people from their homes, and the disruption of traditional livelihoods.
  • The Geology of the Gold Deposits of Prestea Gold Belt of Ghana*

    The Geology of the Gold Deposits of Prestea Gold Belt of Ghana*

    The Geology of the Gold Deposits of Prestea Gold Belt of Ghana* K. Dzigbodi-Adjimah and D. Nana Asamoah Dzigbodi-Adjimah, K. and Nana Asamoah, D., (2009), “The Geology of the Gold Deposits of Prestea Gold Belt of Ghana”, Ghana Mining Journal, Vol. 11, pp. 7 - 18. Abstract This paper presents the geology of the gold deposits along the Prestea gold belt of Ghana to assist exploration work for new orebodies along the belt. Prestea district is the third largest gold producer in West Africa after Obuasi and Tarkwa districts (over 250 metric tonnes Au during the last century). The gold deposits are structurally controlled and occur in a deep-seated fault or fissure zone that is regarded as the ore channel. This structure, which lies at the contact between metavolcanic and metasedimentary rocks in Birimian rocks, is more open (and contains more quartz lodes) at the southern end around Prestea than at Bogoso to the north. The gold deposits consist of the Quartz Vein Type, (QVT) and the Dis- seminated Sulphide Type (DST). The QVT orebodies, which generally carry higher Au grades, lie within a graphitic gouge in the fissure zones whilst the DST is found mostly in sheared or crushed rocks near the fissure zones. Deposits were grouped into three in terms of geographic location and state of development; The deposits south of Prestea are the least developed but have been extensively explored by Takoradi Gold Company. Those at Prestea have been worked exclusively as underground mines on QVT orebodies by Prestea Goldfields Limited and its forerunners; Ariston and Ghana Main Reef companies until 1998 whilst the deposits north of Prestea, which were first worked as surface mines (on DST orebodies) by Marlu Mines up to 1952, were revived by Billiton Bogoso Gold in 1990.