scholarly journals UPAYA KONSERVASI MINERAL DAN PROYEKSI MASA DEPAN PERTAMBANGAN TIMAH DI INDONESIA

2020 ◽  
Vol 1 (1) ◽  
pp. 863-874
Author(s):  
Iskak Aji

ABSTRAKKonservasi mineral dan batubara merupakan salah satu aspek yang diamanatkan oleh Undang-Undang Minerba untuk mewujudkan kaidah teknik pertambangan yang baik (Good Mining Practice). Konservasi minerba adalah upaya dalam rangka optimalisasi pengelolaan atau pemanfaatan sumber daya mineral dan batubara secara terukur, efisien, bertanggung jawab, dan berkelanjutan. Objek-objek yang menjadi target pengelolaan pelaksanaan konservasi mineral dan batubara sesuai Lampiran VII Kepmen ESDM No. 1827 K/30/MEM/2018 meliputi recovery penambangan, recovery pengolahan, batubara kualitas rendah, mineral kadar rendah, mineral Ikutan, sisa hasil pengolahan dan pemurnian, serta cadangan marginal. Kegiatan pertambangan timah di Indonesia berada di wilayah Provinsi Kepulauan Bangka Belitung dan Kepulauan Riau. Kegiatan ini dimulai sejak era kolonial Belanda yang ditandai dengan berdirinya "Banka Tin Winning Bedrijf" (BTW) di Belitung dan Singkep. Penambangan dilakukan oleh perusahaan swasta Belanda yaitu “Gemeeenschappelijke Mijnbouw Maatschappij Biliton” (GMB) dan “NV Singkep Tin Exploitatie Maatschappij” (NV SITEM). Kedua perusahaan ini berubah nama menjadi PT Timah, Tbk. Kegiatan pertambangan timah nasional mengalami pasang surut seiring dengan menipisnya cadangan timah karena eksploitasi yang sudah berlangsung lama dan perubahan terhadap kebutuhan saat ini maupun masa depan timah di dunia perindustrian. Untuk menjaga keberlanjutan kegiatan penambangannya, PT Timah, Tbk melakukan berbagai inisiatif diantaranya pelaksanaan konservasi dengan mengoptimalkan cadangan marginal, pemanfaatan sisa hasil pengolahan, penambangan mineral kadar rendah dan mineral ikutan. Saat ini PT Timah, Tbk mulai melakukan inventarisasi kembali cadangan timah yang sebelumnya ditinggalkan dan melakukan estimasi ulang untuk dikategorikan sebagai cadangan marginal. Potensi tambahan cadangan timah ini berasal dari bekas penambangan yang tidak tuntas maupun dari bekas penambangan tanpa ijin. Selain itu, PT. Timah, Tbk juga melakukan pendataan, inisiatif pengelolaan, dan rencana pemanfaatan untuk sisa hasil pengolahan, mineral kadar rendah dan mineral ikutan dengan aplikasi ketersedian teknologi saat ini. Beberapa upaya yang terus dikembangkan untuk tetap menjaga keberlanjutan industri pertambangan timah dan pengembangan timah primer adalah dengan pengembangan metode penambangan baru seperti borehole mining (BHM) dan inovasi metode penambangan yang sudah ada seperti cutter section dredges (CSD). Pelaksanaan hal-hal tersebut diatas adalah upaya nyata yang dilakukan oleh PT Timah, Tbk untuk melaksanakan konservasi mineral dan mendorong terwujudnya kaidah teknik pertambangan yang baik. Dengan pelaksanaan konservasi mineral dan dukungan dari seluruh stackholder, baik  Pemerintah Daerah Provinsi Kepulauan Bangka Belitung dan PT. Timah, Tbk maka diproyeksikan kegiatan pertambangan timah nasional dapat terus bertahan dan berkelanjutan untuk menunjang industri timah nasional.Kata Kunci: konservasi minerba, timah, cadangan marginal, sisa hasil pengolahan, mineral kadar    rendah, mineral ikutan, pengelolaanABSTRACTMineral and coal conservation is one of the aspects mandated by the Minerba Regulation to embodies the principles of Good Mining Practice. Mineral and coal conservation is an effort to optimize the management or utilization of mineral and coal resources in a measured, efficient, responsible and sustainable. Objects that are targeted for mineral and coal conservation in accordance with Attachment VII of the Minister of Energy and Mineral Resources Decree No. 1827 K / 30 / MEM / 2018 comprise of restoration mining recovery, processing recovery, low quality coal, low grade minerals, gangue minerals,  residues from processing and refining, and marginal reserves. Tin mining activities in Indonesia are mainly in the provinces of the Bangka Belitung Islands and Riau Islands. This activity began in the Dutch colonial era marked by the establishment of "Banka Tin Winning Bedrijf" (BTW) in Belitung and Singkep. Mining is carried out by a Dutch private company, "Gemeeenschappelijke Mijnbouw Maatschappij Biliton" (GMB) and "NV Singkep Tin Exploitatie Maatschappij" (NV SITEM). These two companies then merged into PT Timah, Tbk. Tin mining activities in Indonesia experienced the ups and downs through the depletion of tin reserve due to lifelong exploitation and changes in the current needs and the future of tin in the industrial world. To ensure the sustainability of its mining activities, PT Timah, Tbk has conducted a variety of initiatives such as conserving by optimizing marginal reserve, utilizing the residue of processed products, mining low grade minerals and accompanying gangue minerals. Currently PT Timah, Tbk starts to carry out an inventory of the previously abandoned reserves and re-estimates to be categorized as marginal reserves. This potential additional on tin reserves are comes from mines that are incomplete or from ex-mining activity without permits. In addition, PT. Timah, Tbk also conducts data collection, management innitative, and utilization plans for processing residues, low grade minerals and gangue minerals with current technology applications available. Some efforts that are continually being developed for the sustainable development of the tin mining industry and primary tin development are by developing new mining methods such as borehole mining (BHM) and innovate in existing mining methods such as cutter section dredges (CSD). The implementation of the above is a real effort made by PT Timah, Tbk to carry out mineral conservation and encourage the realization of good mining practice. With mineral conservation and the support from the stockholders, the Bangka Belitung Islands Provincial Government and PT. Timah, Tbk, it is projected that tin mining activities in Indonesia can be maintained and sustainable to support the national tin industry.Key Word: Coal and mineral Conservation minerba, tin, marginal reserve, residual of processing and refining, Low grade mineral, gangue mineral,management

Author(s):  
Nima Rafeeian ◽  
Mohammad Taji

    Abstract— In today's world, the type of investment, prioritization and scheduling the extraction of mineral resources due to the constraints of resources, technologies and human resources, etc. strongly requires a strategic planning appropriated in this area. In terms of quantity and quality, the resources and mines in Semnan province would be seen among the richest mineral resources in Iran. However, due to a scarcity of compiled strategic planning in the mining industry, this prominent province plays a small role in the country's economic developments. In this regard, the exploration and evaluation of the strategic factors and a formulation of strategies seems to be vital. In this study, the analysis and formulation of the demanding strategy have been done by applying the strategic management approach SWOT (Strengths, Weaknesses, Opportunities and Threats). Then the resulting strategies have been prioritized by using a hierarchical multi-criteria decision analysis called AHP (Analytic Hierarchical Process). Three strategies: creation of industrial clusters in the field of handicraft production with raw materials of mud, clay and gypsum panels (S3), joint mineral investments with the other mines of the province (S8), and the creation of groundwork for the mineral production cooperative companies, gained the highest priorities. Three strategies: updating the existing coke-making companies and constructing small coke-making and coal-washing units (S5), forming the specialized, industrial, mining, strategic and advisory committees in the Semnan Provincial Government to facilitate the local laws and encourage investments in mining (S7), and a greater engagement of private sectors with the government (activate the role of mining engineering and a maximum participation in decision-making related to the industry of the province) gained the least priority. At last, using prioritized strategies, some systematic planning is chosen strategically to suit the current situation, and to make possible a development and utilization of the high potential capacities in the mining industry which are already provides in Semnan province.  Index Terms— mining industry, SWOT Analysis, Hierarchical Analysis, Semnan province.


2021 ◽  
Author(s):  
Jialiang Zhang ◽  
Guoqiang Liang ◽  
Cheng Yang ◽  
Juntao Hu ◽  
Yongqiang Chen ◽  
...  

Inspired by the process of "metallurgy first and then beneficiation" for disposing low-grade and complex mineral resources, we proposed a breakthrough method to recover valuable metals from spent entire lithium-ion...


Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 972
Author(s):  
Muhammad Mohsin ◽  
Qiang Zhu ◽  
Sobia Naseem ◽  
Muddassar Sarfraz ◽  
Larisa Ivascu

The mining industry plays a significant role in economic growth and development. Coal is a viable renewable energy source with 185.175 billion deposits in Thar, which has not been deeply explored. Although coal is an energy source and contributes to economic development, it puts pressure on environmental sustainability. The current study investigates Sindh Engro coal mining’s impact on environmental sustainability and human needs and interest. The Folchi and Phillips Environmental Sustainability Mathematics models are employed to measure environmental sustainability. The research findings demonstrated that Sindh Engro coal mining is potentially unsustainable for the environment. The toxic gases (methane, carbon dioxide, sulfur, etc.) are released during operational activities. The four significant environment spheres (atmosphere, hydrosphere, biosphere, and lithosphere) are negatively influenced by Thar coal mining. The second part of the analysis results shows that human needs and interests have a positive and significant relationship except for human health and safety with Sindh Engro coal mining. Environmental pollution can be controlled by utilizing environmentally friendly coal mining operations and technologies. Plantation and ecological normalization can protect the species, flora, and fauna of the Thar Desert. The government of Pakistan and the provincial government of Sind should strictly check the adaptation of environmental standards. Furthermore, the researchers should explore the environmental issues and solutions so that coal mining becomes a cost-efficient and environmental-friendly energy source in Pakistan.


2017 ◽  
Vol 20 ◽  
pp. 68-77
Author(s):  
Kouame Joseph Arthur Kouame ◽  
Fu Xing Jiang ◽  
Yu Feng ◽  
Si Tao Zhu

In rural regions, mining is an activity that employs many people due to the fact that the barriers to entry are sometime trivial, with very low technology, capital fund and no specialized skills required. Many people including children into artisanal mining in Ivory Coast because they can earn higher incomes in mining than through other traditional activities such as agriculture, which is the main activity in the country. Artisanal mining contribute to reduce the abject poverty and it offers many others opportunities. However, this activity has many negative social impacts. Local people including miners are risking their life everyday due to the unsanitary conditions, prostitution, chemical contaminants, and alcoholism, and also the large degradation of lands. The main objective of this Paper is to understand how artisanal gold mining in the Ivory Coast affects local livelihoods and the environment. Some key recommendations for addressing artisanal mining activities in order to have a good option for sustainable management of mineral resources in the country are proposed.


Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 13-14 ◽  
Author(s):  
Tae Min Kim ◽  
Nehal Lakhani ◽  
Justin Gainor ◽  
Manali Kamdar ◽  
Philip Fanning ◽  
...  

Background: CD47 is a myeloid checkpoint upregulated by tumor cells to evade the host's immune response. The high affinity CD47 blocker fusion protein, ALX148, is linked to an inactive immunoglobulin Fc region to minimize toxicity. ALX148 is half the size of an antibody, has been well tolerated, and enhances the innate and adaptive immune response against cancer in combination with anticancer therapeutics across solid and hematologic tumors (ASCO 2020 #3056, EHA 2020 #EP1247). Characterization of ALX148's tolerability profile and antitumor activity in combination with rituximab are reported in patients (pts) with non-Hodgkin Lymphoma (NHL). Methods: Patients with relapsed or refractory CD20-positive B-cell NHL for which no curative therapy was available received ALX148 (10 mg/kg QW or 15 mg/kg QW) in combination with rituximab (375 mg/m2 weekly for 4 doses followed by once monthly for 8 doses). The primary endpoint for the safety population was dose limiting toxicity (DLT). Tumor response, pharmacokinetic (PK), and pharmacodynamic (PD) markers were assessed in all pts. Data are reported as of 30Jun2020 in these fully enrolled cohorts with final data to be updated at the time of presentation. Results: A total of 33 patients with NHL were administered ALX148 in combination with rituximab. Twenty-two pts with median age of 66 years (range 32-80) were administered ALX148, 10 mg/kg QW (ALX10), in combination with rituximab [DLBCL, n=11; mantle cell lymphoma (MCL), n=4; follicular lymphoma (FL), n=5; and marginal zone lymphoma (MZL), n=2]. Eleven pts with median age of 64 years (range 53-78) were administered ALX148, 15 mg/kg QW (ALX15), in combination with rituximab (DLBCL, n=6; MCL, n=1; FL, n=3; and MZL, n=1). There have been no DLTs reported in the fully enrolled safety cohorts, and the MTD of ALX148 in combination with rituximab has not been reached. The maximum ALX148 administered dose is 15 mg/kg QW. Twenty-eight pts experienced any AE, while 16 pts reported mostly low grade treatment-related adverse events (TRAE). The most common TRAEs were rash (21%, n=7), fatigue (9%, n=3), anemia, nausea, neutropenia, and pruritus (6%, n=2 each). With a median follow up of 14 months, objective responses were observed across all histologies in response-evaluable ALX10 pts: 40.9% ORR (4CR,5PR, 6SD, n=22 total) and with a median follow up of 9 months in ALX15 pts: 63.6% ORR (3CR, 4PR, 1SD, n=11 total). Preliminary results indicate favorable ALX148 PK and near complete CD47 receptor occupancy across the dosing interval. Final results will be updated at time of presentation. Conclusions: ALX148 demonstrates excellent tolerability with durable responses in combination with rituximab in patients with relapsed/refractory NHL. The MTD of ALX148 in combination with rituximab was not reached. Encouraging preliminary activity and favorable PK/PD characteristics in combination with rituximab were observed at all dose levels with greater objective response rates reported at the MAD of 15 mg/kg QW. Disclosures Kim: Boryung: Consultancy; Voronoi: Consultancy; F. Hoffmann-La Roche Ltd/Genentech, Inc.: Consultancy; Sanofi: Consultancy; Novartis: Consultancy; Takeda: Consultancy; AstraZeneca and Korea Health Industry Development Institute: Research Funding; AstraZeneca: Consultancy. Lakhani:incyte: Research Funding; merck: Research Funding; mersana: Research Funding; northern biologics: Research Funding; odonate: Research Funding; pfizer: Research Funding; ikena: Research Funding; symphogen: Research Funding; taiRx: Research Funding; tesaro: Research Funding; livzon: Research Funding; loxo: Research Funding; macrogenics: Research Funding; inhibRx: Research Funding; cytomx: Research Funding; formation biologics: Research Funding; forty seven inc: Research Funding; alexion Pharmaceuticals: Research Funding; Alpine Biosciences: Research Funding; ALX Oncology Inc.: Research Funding; Apexian: Research Funding; asana biosciences: Research Funding; ascentage pharma: Research Funding; beigene: Research Funding; celgene: Research Funding; cerulean pharma: Research Funding; constellation pharma: Research Funding; coordination therapeutics: Research Funding; regeneron: Research Funding; sapience therapeutics: Research Funding; shattuck labs: Research Funding; innovent bio: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding; jounce therapeutics: Research Funding. Gainor:theravance: Consultancy; adaptimmune: Research Funding; ariad: Research Funding; astrazeneka: Research Funding; blueprint medicines: Research Funding; lily: Consultancy; gilead sciences: Consultancy; merck: Consultancy, Research Funding; moderna therapeutics: Consultancy, Research Funding; tesaro: Research Funding; blueprint medicines: Consultancy; novartis: Research Funding; oncorus: Consultancy; regeneron: Consultancy; bristol-myers Squibb: Consultancy, Research Funding; amgen: Consultancy; array biopharma: Consultancy, Research Funding; agios: Consultancy; ironwood pharmaceuticals: Consultancy; takeda: Consultancy; genentech: Consultancy, Research Funding; jounce therapeutics: Consultancy, Research Funding. Kamdar:Roche: Research Funding. Fanning:ALX Oncology Inc.: Current Employment, Current equity holder in publicly-traded company. Squifflet:ALX Oncology Inc.: Consultancy; IDDI: Current Employment. Jin:ALX Oncology Inc.: Current Employment. Forgie:ALX Oncology Inc.: Current Employment, Current equity holder in publicly-traded company; Pfizer Inc.: Ended employment in the past 24 months. Wan:Tallac Therapeutics: Current Employment, Current equity holder in private company; ALX Oncology Inc.: Consultancy, Current equity holder in publicly-traded company. Pons:ALX Oncology Inc.: Current Employment, Current equity holder in publicly-traded company. Randolph:ALX Oncology Inc.: Current Employment, Current equity holder in publicly-traded company. Kim:F. Hoffmann-La Roche: Research Funding; Pfizer: Research Funding; JJ: Research Funding; Celltrion: Research Funding; Kyowa Kirn: Research Funding; Donga: Research Funding; Mundipharma: Research Funding.


Author(s):  
A. E. Zakondyrin

Extraction of mineral resources is one of the most profitable economic activities of the country, commanding a large part in Russian GDP. Nevertheless, precisely extractive industry is simultaneously leading in the level of Negative Environmental Impact. Adoption and application of BAT in mining sector companies requires essential changes in ecological policy of the Russian Federation. Although they were already started since 2014, there are still many unsolved problems in this area. It is emphasized within the article frame work, that one of the most topical issues is a long-standing need to develop more efficient methods and mechanisms of state support for technological and ecological changes. The ways of difficulties overcoming were considered, recommendations on enhancement of existing regulatory framework and standardisation documents in the area of research were made.


Author(s):  
V. Volkov ◽  
L. Horoshkova

The article develops a systematic approach to the management of mining, using, export and import non-metallic minerals for construction considering the economic parameters of the development of the world market situation and the domestic market. The analysis showed that the classification of minerals used by the Public Service Geology and Mineral Resources of Ukraine, the State Statistics Committee of Ukraine and Statistics of foreign economic activity - codes UKTZED - do not coincide that complicates the study process using these official sources. According to the results of the conducted researches, the indicators of the dynamics of minerals production in their natural and costly dimensions have been found to be inadequate. An analysis of dynamics and geographic structure of export-import operations was also conducted with natural sand, pebbles, gravel and breakstone. The obtained results allowed us to conclude that the approach to formation of export minerals' flows is not rational, because it poses a threat to the financial state of the mining industry and the country. An analysis of the geographical structure of the export and import of natural sand, pebbles, gravel and breakstone allowed proposing the use of a systematic approach to rational extraction, the use of the country's mineral resources base, while taking into account export-import flows and the price conditions of the external and internal markets and taking into account the resource component of state security.


Obiter ◽  
2021 ◽  
Vol 34 (2) ◽  
Author(s):  
PJ Badenhorst

This decision is an appeal from the decision of the South Gauteng High Court in SFF Association v Xstrata (2011 JDR 0407 (GSJ)). The court a quo decided incorrectly that the holder of an old-order mining right, which was converted into a (new) mining right in terms of the Mineral and Petroleum Resources Development Act 28 of 2002 (the “Act”), remains liable upon conversion for the payment of (contractual) royalties in terms of a mineral lease, which was concluded prior to enactment of the Act. The appeal was upheld by the Supreme Court of Appeal (“SCA”) (2012 (5) SA 60 (SCA) par 27). The decision was rendered by Wallis JA with the other judges concurring with his judgment. Prior to the Act mineral-right holders could grant a mining right to a miner against payment of royalties or other forms of consideration. At issue on appeal was whether the obligation to pay royalties in terms of a mineral lease “survives the introduction of the new regime in respect of mining rights brought about by the Act”. As indicated by the SCA, the Act fundamentally changed the legal basis upon which rights to minerals are acquired and exercised. Previously mineral rights were vested in the owner of land or the holder of mineral rights, which rights could be exercised upon acquisition of a statutory authorization to exploit the minerals. In terms of the new regime, common-law mineral rights were destroyed and “all mineral resources vested in the state as the custodian of such resources on behalf of all South Africans”, whereupon the state could confer the right to exploit such resources to applicants. Upon granting a mining right in terms of the Act (statutory) royalties have become payable to the state since 1 March 2010 of the Act and the Mineral and Petroleum Resources Royalty Act 28 of 2008. In order to prevent disruption of the mining industry, provision was made in the Act for the continuation of old-order rights for different transitional periods ranging from one to five years and conversion of such rights during the periods of transition. The transitional arrangements in Schedule II of the Act (“transitional arrangements”) inter alia ensured security of tenure of prospecting rights and mining rights and enabled holders thereof to comply with the Act. In particular, an old-order mining right remained valid for five years “subject to the terms and conditions under which it was granted” (item 7(1) of the transitional arrangements) and could be converted into a new mining right (item 7(2) of the transitional arrangements) if certain requirements were met. The applicant had to have: (a) met the requirements for lodgement of application for conversion; (b) conducted mining operations in respect of the mining right; (c) indicated that he would continue to conduct such mining operations upon conversion of the mining right; (d) had an approved environmental management programme; and (e) paid the prescribed conversion fee (item 7(3) of the transitional arrangements). To recap, the Xstrata decision dealt with an old-order mining right that had been converted into a (new) mining right and the effect of these statutory changes on rights to royalties which accrued to a former holder of mineral rights by virtue of a mineral lease. 


2015 ◽  
Vol 4 (2) ◽  
pp. 132-140
Author(s):  
Kola Odeku

Prospecting and exploiting natural mineral resources for economic growth and development could be beneficial if done in sustainable ways and manners. However, if the operation is done in such a way that cause harm to the environment and people, this will amount to unsustainable mining activity and anti-sustainable development. Therefore, there is need to ensure that appropriate and adequate plans and programmes are put in place in order to mitigate, minimise and avoid negative environmental impacts. Against the backdrop of these concerns and the need to ensure that the environment is not degraded and destroyed, South Africa, as part of the countries that promotes sustainable prospecting and mining has put in place and currently implementing tools known as environmental management plan and programme to regulate and control all prospecting and mining activities. These tools contain a bundle of remedial actions in the forms of compensation, rehabilitation and restoration of any harm done to the environment during the course of mining activities. They also contain information on mitigation, ingredients for good practice approach on how to conduct sustainable prospecting and mining. This article looks at the intrinsic roles of these tools and accentuates the importance and operations of their use in the decision making processes.


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