Download Download

Total Page:16

File Type:pdf, Size:1020Kb

Download Download International Journal of Advanced Science and Technology Vol. 29, No. 7, (2020), pp. 2375-2382 Geochemical Evaluation of Contaminated Soil for Stabilisation Using Microbiologically Induced Calcite Precipitation Method [1]Jodin Makinda, [2]Khairul Anuar Kassim, [2]Kamarudin Ahmad, [2]Abubakar Sadiq Muhammed, [2]Muttaqa Uba Zango [1],[2] School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor Malaysia [1] Faculty of Engineering, Universiti Malaysia Sabah, 84000, Kota Kinabalu Sabah, Malaysia Abstract Abandoned mines contaminated with heavy metal wastes pose health risk and environmental hazard. Common methods in managing these wastes include pond storage, dry sacking, underground and ocean disposal and phytho-stabilisation but these does not address the associated risks regarding migration of contaminated liquid or when the soil structure is compromised during natural disaster such as earthquake. Due to these limitations, microbiologically induced calcite precipitation method (MICP) is an exciting alternative as it is sustainable and environmentally friendly. This research evaluates mine waste obtained from two sites; Mamut and Lohan Dam, both located at earthquake-prone Ranau Sabah, Malaysia, in term of their physical, mineralogy and morphological characteristics for stabilisation using MICP. Physically, mining wastes from Mamut are of well graded soil with sand (53.9%) and gravel (43.5%), classified as SW (USCS) and A-1-a (AASHTO). Meanwhile, waste from Lohan Dam are of sand (49.9%) and gravel (10.1%), classified as SM (USCS) and A-4 (AASHTO). Constant head test of the soils from the sites showed results of 3.607 x 10-1 and 3.407 x 10-2 cm/s respectively indicate high permeability. Mineralogy assessment using inductively coupled plasma atomic emission spectroscopy (ICP-OES) showed high level of iron (Fe) with 528.08 and 2931.38 mg/L respectively. Other heavy metals detected include copper (Cu), 24.39 and 4.33 mg/L, lead (Pb), 2.53 and 0.53 mg/L, manganese (Mn), 5.71 and 3.64 mg/L and arsenic (As), 0.71 and 0.31 mg/L; some higher than Malaysia’s Ministry of Health and United Nations’ Food and Agricultural approved standards. Morphological observation of the size, shape and soil texture under scanning electromagnetic (SEM) further indicate the necessity and suitability of both sites for stabilisation using MICP. Index Terms—Contaminated Soil, Microbiologically Induced Calcite Precipitation, Mine Waste, Soil Stabilization I. BACKGROUND, MOTIVATION, OBJECTIVES In 1970s, Malaysia was one of the world’s leading countries in minerals production of tin, copper, bauxite, gold and ilmenite. Indeed, mining was one of the major contributor to the GDP, producing almost 31% of the world tin output in 1979 but the production fell by 90% over the last 15 year [1]. Due to the exhaustion of mineral deposits, low prices and high operating costs, many of the mines are now abandoned include sites in Bukit Botol, Bukit Ibam, Panching, Sg Lembing, Kota Gelanggi, Padang Piol and Kg Awah in Pahang [2] and Mamut in Sabah [3]. Heavy metal wastes from abandoned mines are known to pose health risk to the surrounding settlement and potential hazard to the environment. For example, Mamut cooper mine which was in operation from 1975 to 1999 generated about 350 Mt of waste, of which 250 Mt are rocks and overburden materials and over 100 Mt of tailings. The wastes from this mine were dumped at various sites near the areas [4]. Compared to other developing countries, Malaysia has not inherited such a serious legacy of contaminated land and most of the identified possible sources of contaminations come from motor ISSN: 2005-4238 IJAST 2375 Copyright ⓒ 2020 SERSC International Journal of Advanced Science and Technology Vol. 29, No. 7, (2020), pp. 2375-2382 workshops, petrol stations, fuel depots, railway yards, landfills, industrial sites and ex-mining land. Probably due to this, little works have been carried out in identifying and stabilizing contaminated lands. Currently, most methods in management of wastes include pond storage, dry sacking, underground disposal, ocean disposal and phytho-stabilisation does not address the associated risks regarding migration of contaminated liquid or when the soil structure is compromised during natural disaster such as earthquake. Other approaches on remediation of contaminated mine waste are by using stabilizers to bind the waste particles thus immobilizing the contaminants and minimizing leaching into the surrounding environment. Among the previous studies include immobilization of sulfates and heavy metals in gold mine tailings by sodium silicate and hydrated lime [5], treatment of acid mine drainage using limestone and activated sludge [6], stabilization of arsenic with basic oxygen furnace [7], phosphate treatment for the remediation of contaminated mine waste [8], application of coal combustion by-products in mine site rehabilitation [9], use of clay liners, whose essential material is bentonite to decrease the hydraulic conductivity of landfills [10], Portland cement application to control acid mine drainage generation from waste rocks [11], use of fly ash for backfilling abandoned room and pillar mines [12], use of Si-rich substances to regulate the mobility of pollutants in soil and water and enhance the plant resistance to its toxicity [13] and use of serpentinite and concrete waste to raise pH level and removing metal ions concentrations from acid metal drainage [14]. However, question is still arising on the use of these industrial based by-products as they alter the pH of groundwater and thus may cause serious environmental problems and contribute to the ecosystem disturbance [15]. Since MICP is considered as newer, more inventive and environmentally sustainable compared to the other methods, a wider application of this technique in geotechnical engineering should be explored. MICP is a biologically driven calcium carbonate (calcite or CaCO3) precipitation technology, either controlled or induced. When it is biologically controlled, organism independently synthesizes minerals unique to the species regardless of the environmental conditions while induced mechanism produces CaCO3 somewhat dependent of environmental condition[16]. The factors affecting the effectiveness of the treatment include type of bacteria, treatment method, temperature, bacteria concentration, pH, degree of saturation and most importantly the geochemical properties of soil [17]. This research reports the preliminary geochemical evaluation made on mine wastes collected from several points near abandoned Mamut Copper Mine, Ranau, Sabah, Malaysia shown in Figure 1. While MICP is gaining popularity to treat problematic soil such as liquefaction, internal erosion, settlement and frost damages, its potential in treating contaminated soil, particularly of mine waste is still not explored fully. The research is motivated by the increase in land contamination in Malaysia and particularly in the study area, some infrastructures were reportedly damaged due to a 6.0 magnitude earthquake on 5th June 2015, causing ground failure and rising fear of wall of open pit in abandoned mines breaking, causing water to flow out to the water resources utilised by nearby residents [18]. II. MATERIALS AND METHODS A. Materials Sampling was conducted near the abandoned Mamut mine and Lohan Dam about 8 Km away where the tailings were piped, routed and deposited. The GPS coordinates for both locations are as shown in Table 1. Table 1: Sampling Locations Sample Location Mamut 6°1′ 37.7″ N, 116°39′ 21.0″E ISSN: 2005-4238 IJAST 2376 Copyright ⓒ 2020 SERSC International Journal of Advanced Science and Technology Vol. 29, No. 7, (2020), pp. 2375-2382 Lohan Dam 6° 0' 45.936'' N, 116° 44' 20.004'' E The samples were collected at depth of 0.5 m to 3.0 m of the soil profile and submitted to Geotechnical Laboratory, Universiti Malaysia Sabah for geotechnical tests. Figure 1: Location of Study Area [19] B. Geotechnical Test The geotechnical properties determined were their natural moisture content, sieving analysis, Atterberg limits, pH, specific gravity and organic matter. Dry and wet sieving method was used to determine the particle size distribution of coarser and finer soil respectively. pH was measured by pH meter and specific gravity, permeability and organic matter were measured according to British Standard. Following the tests, the mine wastes were classified based on their particle size, particle distribution and texture using two major classification systems; AASHTO and USCS. All laboratory tests were performed at according to BS 1377: Part 2: 1990. C. Mineralogy Test The air dried and powdered sample were then made into pressure, digested and analysed using inductively coupled plasma optical emission spectrophotometer (ICP-OES) to determine the concentration of heavy metals and major elements. All mineralogy and morphology tests were performed University Industry Research Laboratory, Universiti Teknologi Malaysia. D. Morphology Assessment A scanning electron microscope (SEM) with a maximum magnification of about 1000x were used to generate high-resolution images and precisely measures very small features on the surface of the soil sample. III. RESULTS, DISCUSSION AND CONCLUSION A. Geotechnical Properties Table 2 and Figure 2 show the geotechnical properties and gradation curve aof both Mamut and Lohan Dam soil. Based on the particle size distribution, Mamut contains 97.4% coarse grain compared to 60.0% for Lohan
Recommended publications
  • An Analysis of Heavy Metals in Lakes of Former Tin Mining Sites in the City of Ipoh, Perak, Malaysia
    An Analysis of Heavy Metals in Lakes of Former Tin Mining Sites in the City of Ipoh, Perak, Malaysia Mohmadisa Hashim, Wee Fhei Shiang, Zahid Mat Said, Nasir Nayan, Hanifah Mahat & Yazid Saleh To Link this Article: http://dx.doi.org/10.6007/IJARBSS/v8-i2/3977 DOI:10.6007/IJARBSS/v8-i2/3977 Received: 29 Dec 2017, Revised: 03 Feb 2018, Accepted: 10 Feb 2018 Published Online: 13 Feb 2018 In-Text Citation: (Hashim et al., 2018) To Cite this Article: Hashim, M., Shiang, W. F., Said, Z. M., Nayan, N., Mahat, H., & Saleh, Y. (2018). An Analysis of Heavy Metals in Lakes of Former Tin Mining Sites in the City of Ipoh, Perak, Malaysia. International Journal of Academic Research in Business and Social Sciences, 8(2), 673–683. Copyright: © 2018 The Author(s) Published by Human Resource Management Academic Research Society (www.hrmars.com) This article is published under the Creative Commons Attribution (CC BY 4.0) license. Anyone may reproduce, distribute, translate and create derivative works of this article (for both commercial and non-commercial purposes), subject to full attribution to the original publication and authors. The full terms of this license may be seen at: http://creativecommons.org/licences/by/4.0/legalcode Vol. 8, No.2, February 2018, Pg. 673 – 683 http://hrmars.com/index.php/pages/detail/IJARBSS JOURNAL HOMEPAGE Full Terms & Conditions of access and use can be found at http://hrmars.com/index.php/pages/detail/publication-ethics International Journal of Academic Research in Business and Social Sciences Vol. 8 , No.2, February 2018,
    [Show full text]
  • Persatuan Geologi Malaysia
    KDN 056/82 ISSN 0126/5539 PERSATUAN GEOLOGI MALAYSIA NEWSLETTER OF THE GEOLOGICAL SOCIETY OF MALAYSIA Jil. 8, No.3 (Vol. 8, No. 3) Mei-Jun 1982 KANDUNGAN (CONTENTS) CATATAN GEOLOGI (GEOLOGICAL NOTES) S. Hancock: Role of groundwater in the Malaysian environment 97 D. Santokh Singh & S.K. Y ong: The localised occurrence of hornblende in granite from the I.K.R., Quarry, Kuala Dipang, Perak 103 E.I. Cobbing, D.I.1. Mallick, F.L. Yap & L.H. Teoh: The granites of Peninsular Malaysia: A collaborative study by Institute of Geological Sciences and Geological Survey of Malaysia 105 G. van Klinken & C.S. Ho: Gravity traverse across northern Peninsular Malaysia 109 BERITA PERSATUAN (NEWS OF THE SOCIETY) GSM Council 1983/84 Nominations 114 New package deals for GSM Bulletins 114 GSM Economic Geology Seminar '82 - latest 115 Society's Field trips 116 GSM Petroleum Geology Semin~ '82 - First Circular 116 Editor's Note - The Society's Past Presidents 118 Pertukaran Alamat (Change of address) 119 Pertambahan Baru Perpustakaan PGM (New Library Additions) 120 BERITA-BERITA LAIN (OTHER NEWS) Financial support to attend 27th Int. Geological Congress in Moscow 121 Fulbright Visiting Professor at University of Malaya 122 Production trend for minerals and metals in 1981 123 9th International LNG/LPG conference & Exhibition - Gastech 82 123 SEATRAD Centre Seminar 'Beneficiation of Tin & Associated Minerals' 125 RMRDC Workshops 126 4th International Congress - International Association of Engineering Geologists 127 Geotechnical Symposium and Short Course on Soil & Rock Improvement Techniques 127 1st Meeting of the Southern Hemisphere on Mineral Technology 128 Kalendar (Calendar) 129 DIKELUARKAN DWIBULANAN ISSUED BIMONTHLY PERSAT11AN ·GEOLOGI MALAYSIA (GEOLOGICAL SOCIETY OF MALAYSIA) Majlis (Council) 1982/83 Pegawai-pegawai (Of·ficers) Presiden Khoo Teng Tion:g, Jabatan Geologi, (President) .
    [Show full text]
  • EFFECT of LIME on STABILIZATION of MINING WASTE from SABAH, MALAYSIA Baba Bin Musta , Khairul Anuar Bin Kassim , Prasannan Pilla
    Malaysian Journal of Civil Engineering 22(2) :202-216 (2010) EFFECT OF LIME ON STABILIZATION OF MINING WASTE FROM SABAH, MALAYSIA Baba bin Musta1, Khairul Anuar bin Kassim2, Prasannan Pillai Rajeev Kumar3* 1School of Science and TechnologyUniversity Malaysia Sabah, 88400, Kota Kinabalu, Sabah, Malaysia 2, 3 Department of Geotechnics & Transportation Faculty of Civil Engineering University Teknologi Malaysia 81310 Skudai, Johor, Malaysia *Corresponding Author: [email protected] _______________________________________________________________________ ABSTRACT: This paper deals with the effect of lime on stabilization of mining waste from Sabah, Malaysia. In this study, different percentages of lime as well as fine material were added as additive with the mining waste. The engineering properties were measured by compaction test, unconfined compressive strength tests and permeability tests. The mineral identification and microstructure were examined using X-ray diffraction (XRD) and Scanning Electron Microscopic (SEM). The compaction test indicated that the optimum moisture content varied with amount of lime content. The virgin mining waste showed low unconfined compressive strength value due to the very low cementing agent. The samples showed a rapid increase in shear strength when stabilized with lime content ranging from 2 to 8%. The rate of increase in strength is most rapid within two weeks of interaction. This is due to the pozzolanic reaction, which created more rigid - packed structure and small pore space at lime content as low as 2%. More addition of lime had increased the unconfined compressive strength due to the intensive pozzolanic reactions forming more cementitious mineral and created bridge-like structure. However the optimum percentage of lime required was 6% based on the unconfined compressive strength.
    [Show full text]
  • Law in a Plural Society: Malaysian Experience Zaki Azmi
    BYU Law Review Volume 2012 | Issue 3 Article 1 9-1-2012 Law in a Plural Society: Malaysian Experience Zaki Azmi Follow this and additional works at: https://digitalcommons.law.byu.edu/lawreview Part of the Human Geography Commons, Law and Society Commons, Legal History Commons, and the Rule of Law Commons Recommended Citation Zaki Azmi, Law in a Plural Society: Malaysian Experience, 2012 BYU L. Rev. 689 (2012). Available at: https://digitalcommons.law.byu.edu/lawreview/vol2012/iss3/1 This Conference Proceeding is brought to you for free and open access by the Brigham Young University Law Review at BYU Law Digital Commons. It has been accepted for inclusion in BYU Law Review by an authorized editor of BYU Law Digital Commons. For more information, please contact [email protected]. 01-AZMI.FIN (DO NOT DELETE) 2/8/2013 2:39 PM Law in a Plural Society: Malaysian Experience Address Given by Former Chief Justice of Malaysia, Zaki Azmi* I. INTRODUCTION This paper concentrates mainly on how Malaysia, a country composed of many races and religions, creates and enforces its laws in order to sustain the peace that has lasted more than half a century. I have recently retired as a judge, so my view on this subject is from a judge’s perspective. Malaysia is located just north of the equator, about halfway around the world from Utah. It is geographically divided into two main regions by the South China Sea. These two regions are the Peninsula Malaysia and Sabah and Sarawak. Peninsula Malaysia was known as Malaya, but in 1963, the British colonies
    [Show full text]
  • Chapter 1 Introduction
    CHAPTER 1 INTRODUCTION 1.0 INTRODUCTION 1.1 Background Study Tin mining is one of the oldest industries in Malaysia. As what had been researched by James R.Lee (2000), the tin mining started since 1820s in Malaysia after the arrival of Chinese immigrants. The Chinese immigrants settled in Perak and started tin mines. Their leader was the famous Chung Ah Qwee. Their arrival contributed to the needed labour and hence the growth of the tin mining industry. Tin was the major pillars of the Malaysian economy. Tin occurs chiefly as alluvial deposits in the foothills of the Peninsular on the western site. The most important area is the Kinta Valley, which includes the towns of Ipoh, Gopeng, Kampar and Batu Gajah in the state of Perak. But that was long ago before price of tin had fallen greatly and high cost of mining had shutdown the industry. What is left now is the abandoned mine site scattered all over Perak. Some mines are far from populated area and some are in the population itself such as Universiti Teknologi PETRONAS (UTP). The campus is located on land that was once an active tin mining site. The residual of past activities can be seen where number of mining ponds can be found scattered in the vicinity of UTP. The main concern from geologist and nature agencies are the identification of Potentially Toxic Elements (PTEs) and the level of concentration for each element found in the area. Until now, there are only a few numbers of studies in Malaysia that has been done on data collection of PTEs and elevated content of PTEs in former mine.
    [Show full text]
  • Sell-0280 , Porphyry Copper Deposits, Arizona & New
    CONTACT INFORMATION Mining Records Curator Arizona Geological Survey 416 W. Congress St., Suite 100 Tucson, Arizona 85701 520-770-3500 http://www.azgs.az.gov [email protected] The following file is part of the James Doyle Sell Mining Collection ACCESS STATEMENT These digitized collections are accessible for purposes of education and research. We have indicated what we know about copyright and rights of privacy, publicity, or trademark. Due to the nature of archival collections, we are not always able to identify this information. We are eager to hear from any rights owners, so that we may obtain accurate information. Upon request, we will remove material from public view while we address a rights issue. CONSTRAINTS STATEMENT The Arizona Geological Survey does not claim to control all rights for all materials in its collection. These rights include, but are not limited to: copyright, privacy rights, and cultural protection rights. The User hereby assumes all responsibility for obtaining any rights to use the material in excess of “fair use.” The Survey makes no intellectual property claims to the products created by individual authors in the manuscript collections, except when the author deeded those rights to the Survey or when those authors were employed by the State of Arizona and created intellectual products as a function of their official duties. The Survey does maintain property rights to the physical and digital representations of the works. QUALITY STATEMENT The Arizona Geological Survey is not responsible for the accuracy of the records, information, or opinions that may be contained in the files. The Survey collects, catalogs, and archives data on mineral properties regardless of its views of the veracity or accuracy of those data.
    [Show full text]
  • The Hannay Family by Col. William Vanderpoel Hannay
    THE HANNAY FAMILY BY COL. WILLIAM VANDERPOEL HANNAY AUS-RET LIFE MEMBER CLAN HANNAY SOCIETY AND MEMBER OF THE CLAN COUNCIL FOUNDER AND PAST PRESIDENT OF DUTCH SETTLERS SOCIETY OF ALBANY ALBANY COUNTY HISTORICAL ASSOCIATION COPYRIGHT, 1969, BY COL. WILLIAM VANDERPOEL HANNAY PORTIONS OF THIS WORK MAY BE REPRODUCED UPON REQUEST COMPILER OF THE BABCOCK FAMILY THE BURDICK FAMILY THE CRUICKSHANK FAMILY GENEALOGY OF THE HANNAY FAMILY THE JAYCOX FAMILY THE LA PAUGH FAMILY THE VANDERPOEL FAMILY THE VAN SLYCK FAMILY THE VANWIE FAMILY THE WELCH FAMILY THE WILSEY FAMILY THE JUDGE BRINKMAN PAPERS 3 PREFACE This record of the Hannay Family is a continuance and updating of my first book "Genealogy of the Hannay Family" published in 1913 as a youth of 17. It represents an intensive study, interrupted by World Wars I and II and now since my retirement from the Army, it has been full time. In my first book there were three points of dispair, all of which have now been resolved. (I) The name of the vessel in which Andrew Hannay came to America. (2) Locating the de­ scendants of the first son James and (3) The names of Andrew's forbears. It contained a record of Andrew Hannay and his de­ scendants, and information on the various branches in Scotland as found in the publications of the "Scottish Records Society", "Whose Who", "Burk's" and other authorities such as could be located in various libraries. Also brief records of several families of the name that we could not at that time identify. Since then there have been published two books on the family.
    [Show full text]
  • The Criminalisation of Bribery in Asia and the Pacific
    ADB/OECD Anti-Corruption Initiative for Asia and the Pacific THE CRIMINALISATION OF BRIBERY IN ASIA AND THE PACIFIC Proceedings of the 10th Regional Seminar for Asia and the Pacific Held in Kuala Lumpur, Malaysia, 23-24 September 2010, and hosted by the Malaysian Anti-Corruption Commission ADB/OECD Anti-Corruption Initiative for Asia and the Pacific THE CRIMINALISATION OF BRIBERY IN ASIA AND THE PACIFIC Proceedings of the 10th Regional Seminar for Asia and the Pacific Held in Kuala Lumpur, Malaysia, 23-24 September 2010, and hosted by the Malaysian Anti-Corruption Commission Asian Development Bank Organisation for Economic Co-operation and Development Publications of the ADB/OECD Anti-Corruption Initiative for Asia and the Pacific – The Criminalisation of Bribery in Asia and the Pacific: Frameworks and Practices in 28 Jurisdictions. Paris, ADB/OECD 2010. – Criminalisation of Bribery: Proceedings of the 10th Regional Seminar for Asia and the Pacific. Paris, ADB/OECD 2010. – Strategies for Business, Government and Civil Society to Fight Corruption in Asia and the Pacific. Paris, ADB/OECD, 2009. – Supporting the Fight against Corruption in Asia and the Pacific: ADB/OECD Anti-Corruption Initiative Annual Report 2007. Paris, ADB/OECD, 2008. – Fighting Bribery in Public Procurement in Asia and the Pacific. Proceedings of the 7th Regional Technical Seminar. Paris: ADB/OECD, 2008. – Asset Recovery and Mutual Legal Assistance in Asia and the Pacific. Proceedings of the 6th Regional Technical Seminar. Paris: ADB/OECD, 2008. – Managing Conflict of Interest: Frameworks, Tools, and Instruments for Preventing, Detecting, and Managing Conflict of Interest. Proceedings of the 5th Regional Technical Seminar.
    [Show full text]
  • 11/29/2016 1
    11/29/2016 Elements Chemical Rare Earth Groups symbol Yttrium Y Europium Eu Gadolinium Gd Terbium Tb HYDROMETALLURGY OF Dysprosium Dy XENOTIME AND MONAZITE Holmium Ho Erbium Er PROCESSING Thulium Tm Ytterbium Yb Elements Chemical DR MEOR YUSOFF B. MEOR SULAIMAN, symbol Lutetium Lu MATERIALS TECHNOLOGY GROUP Lanthanum La Heavy Rare Cerium Ce Light Rare Earth Group Praseodymium Pr Earth Group Neodymium Nd Samarium Sm Energy densities of different magnetic materials RE & Malaysian Car Industry Upward & Downward Trend of Light RE Price 1 11/29/2016 REE: Demand and Supply Rare Earth Price (US$/kg) Demand (2016) Supply (2016) Element La 14 35-40,000 tons 75-80,000 tons Ce 15 60-70,000 tons 75-85,000 tons Nd 82 20-30,000 tons 30-35,000 tons Eu 1,800 625-725 tons 450-550 tons Tb 1,400 450-550 tons 300-400 tons Dy 7,500 1500-1800 tons 1300-1600 tons Y 60 12-14 tons 9-11 tons The Rare Earth Chain Rare earth chain : From Mining to Magnet Mining Mineral RE recovery process concentrate from mineral Can be generally categorized into the upstream, midstream and down stream Upstream includes mining and beneficiation steps Upstream Midstream includes cracking and separation and purification of individual RE element Midstream Downstream includes metal making and production of end-product such as magnet, catalyst, etc RE are turned into Separation and Products metal magnet purification of RE Mixed light and heavy RE Downstream 10 Rare Earth Magnet: Value-added from Mineral to High Purity Individual Element Tin Mining in Malaysia Tin mining has been
    [Show full text]
  • How to Look for a Book
    How to look for a book: press the keys cmd and F on the keyboard, then in the pop up window search by word Book Book Year Class Author / Publisher Title Description number letter printed Generalities/General encyclopaedic work 030 ENC Encyclopedia of Malaysia 01- Environment 1998 030 ENC Encyclopedia of Malaysia 02 - Plants 1998 030 ENC Encyclopedia of Malaysia 03 - Animals 1998 030 ENC Encyclopedia of Malaysia 04 - Early History 1998 030 ENC Encyclopedia of Malaysia 05 - Architecture 1998 030 ENC Encyclopedia of Malaysia 06 - The Seas 2001 030 ENC Encyclopedia of Malaysia 07 - Early Modern History (1800-1940) 2001 030 ENC Encyclopedia of Malaysia 08 - Performing Arts 2004 030 ENC Encyclopedia of Malaysia 09 - Languages and Literature 2004 030 ENC Encyclopedia of Malaysia 10- Religions and Beliefs 2005 030 ENC Encyclopedia of Malaysia 11-Government and Politics (1940-2006) 2006 030 ENC Encyclopedia of Malaysia 12- Peoples & Traditions 2007 030 ENC Encyclopedia of Malaysia 13- Economy 2007 030 ENC Encyclopedia of Malaysia 14- Crafts and the visual arts 2007 030 ENC Encyclopedia of Malaysia 15- Sports and Recreation 2008 030 ENC Encyclopedia of Malaysia 16- The rulers of Malaysia 2011 Documentary-, educational-, news In this book Marina draws attention to the many media, journalism, dangers faced by Malaysia, to concerns to fellow publishing 070 MAR Marina Mahathir Dancing on Thin Ice 2015 citizens, social and political affairs. Double copies. Compilations of he author's thought, reflecting on 070 RUS Rusdi Mustapha Malaysian Graffiti 2012 the World, its people and events. Philosophy & Principles of Tibetan Buddhism applied to everyday psychology 100 LAM HH Dalai Lama The Art of Happiness 1999 problems Introduction and spiritual manual from meditation 100 RIN Rinpoche, Sogyal The Tibetan book of Living and Dying 2002 to the trials and rewards of the spiritual path.
    [Show full text]
  • The Mineral Industry of Malaysia in 1999
    THE MINERAL INDUSTRY OF MALAYSIA By John C. Wu Malaysia’s identified mineral resources were antimony, barite, to be $50.7 billion, of which $3.7 billion was contributed by the bauxite, bentonite, clays, coal, copper, feldspar, gold, iron ore, mining sector in 1999. lead, limestone, mica, natural gas, crude petroleum, rare earths, According to Government trade statistics, total exports sand and gravel, silica, silver, tantalum, thorium, tin, tungsten, increased by 12.1% to $84.5 billion, and imports increased by zinc, and zirconium. Most of the known reserves of barite, 9.1% to $65.5% in 1999. The rise in Malaysia’s trade surplus bauxite, bentonite, kaolin, copper, gold, iron ore, limestone, (23.8% to $19 billion) was largely attributed to the increased silica, and tin, as well as such associated minerals as ilmenite, volume of exports and the depreciation of the Malaysian ringgit monazite, rutile, struverite (a columbium- tantalum bearing (RM), which made Malaysia’s commodities more competitive in mineral concentrate), and zircon have been developed and the world market (Department of Statistics, 2000, p. 87-91). exploited since the 1970's. In the past 5 years, several identified Malaysia was a net mineral exporter in 1999. Minerals exports resources of bauxite, coal, copper, gold, kaolin, silica sand, and were $5.96 billion and accounted for 7.1% of total exports. silver, which are found mostly in Kelantan, Pahang, Sabah, and Minerals imports were $2.23 billion and accounted for 3.4% of Sarawak States, have been explored by domestic and foreign total imports. Malaysia had a mineral trade surplus of $3.73 companies to assess their potential for development.
    [Show full text]
  • Environmental Geology & Geotechnics" - Report 312 Welcoming Address by Dr
    Jil. 21, No.5 (Vol. 21, No.5) Sep-Oct 1995 KANDUNGAN (Contents) . ·.··.:.A.....· ...•• .J.· ·.• •. :.'·.1.·•• . .•: .• i:.• .•·.·. •. .•. :·.· ••. ·•. 4.· ..• ••.p. .:.··. ••.••. .•"1 . •.••. i•.( .·•. .•. ·'.'·····. l.··.p..•·.•... N..•..·. • t.· .•. .. •·.· ..• 1.:••.•.: ..··.':.· .•. .•:•. ·.·.· .•...:.·.:, ... :.:.: •.:..•...•.•. : .... .'.':. .•:. .. ••.'.• '." .••..'.)) .• '.• '... '....... '............. '..... '........... '.... :....:..... '... ............ : ...•. '..•. :.'.. :.•.:.. '.. .'.... '.. :............ :.. :.'... :.. '.'.. :......... ...•....•... :.:.•..• .•..•'.: .•.•.•.: ...•.:.: .•.•...• .•...• ).:, ......... ,.. } •• ,. •• :.:.:.:.: .. ................................P .. ts...• :.:.:.:.:.:.:.:.:.:~.· ·. : .:N.....·.· •. .:.:.:.:.:.:.:.:.:.:.:.:.;.:.:.;.;·.~··. ~.··.~ ....... ;.:.;.:.:.:.;.;.;~.··.·. ·. · ... ;.........~ .:.··.·.·'. :...~ .: ,. ..;9....·· .• : ....·.:. I . ~:.~~•:.•. P.•.............. •.··.•. , ..: ... :.....·.P........• •.·. • .........· ~.......$ •.·.•.. :.:.:.:.:.:.:.:.:::::. ~jjj~tij~~: ;:rr:.:.:. ·).,..·······.:::·,,::·:·i.·j::::::::~~r ~ ~~ ;:~:~:;:;:;:;:::: : ::::::::: ... :::::::: Mohd Shafeea Leman and Yusri Zakariah: Iron rich conglomerate of Ma'Okil Formation 293 at Bukit Lop, Chaah, Johor Syed Sheikh Almashoor: Located: The extension ofBok Bak fault in north Kedah and Perlis, 301 Peninsular Malaysia A.J. Barber: Continent-island arc collision: The Australia-Banda Arc collision zone 305 Hamzah Mohamad: Geological history of the Earth's crust: the Malaysian perspective 306 R.M. Spang:
    [Show full text]