Coal is a fossil fuel that is available in large quantities in Indonesia. The process of burning ... more Coal is a fossil fuel that is available in large quantities in Indonesia. The process of burning coal produces waste in the form of fly ash and bottom ash (FABA) which if allowed to accumulate for a long time can cause problems for the environment and living things. This study aims to utilize coal ash waste as a mixture of planting media to reduce environmental pollution. The research was conducted on tomato and chili plants by observing the growth of these plants. In this study, there were three comparisons of the composition of the planting media mixture used, namely 85% soil (T85%) and 15% faba (FB15), 65% soil (T65%) and 35% faba (FB35%), and 50% soil (T50). %) and 50% faba (FB50%). The comparison of the three compositions recommended for mixed planting media is the composition of T50% and FB50%. Because it can optimize waste and plant growth results are not much different from the other two compositions. The composition made with different levels of faba content makes chili and tomato plants grow at levels of 50%, this can increase the use of waste that has been wasted and is very economical if this faba is used as a mixture of planting media.
PT Panghegar Mitra Abadi is a company engaged in the mining, processing and marketing of andesite... more PT Panghegar Mitra Abadi is a company engaged in the mining, processing and marketing of andesite stone. Mining location is located in Block Gadung Montain, Cikuya Village, Lagadar Village, Margaasih Subdistrict, District Bandung, West Java Province. From the results of the research is known that PT Panghegar Mitra Abadi has some problems that arise such as inefficient use of tools, sudden equipment damage, lack of discipline of operators and various other factors so that the problem causes the cost of mining production activities to be spent to be large. Therefore it is necessary to do research to know the owning cost and operating cost to be issued and to know the cost of production that must be invested so in the next 10 years. Based on the results of research conducted at PT Panghegar Mitra Abadi has known owning cost per hour that is Rp 1.562.990,17 and cost of operations per hour is Rp 3.222.931,29. While the cost to be invested for the next 10 years is Rp 87.347.772.606,51.
Prosiding Teknik Pertambangan; Vol 4, No 2, Prosiding Teknik Pertambangan (Agustus, 2018); 577-585, Aug 9, 2018
CV Panghegar is a national private company in the field of andesite mining which has an area of 1... more CV Panghegar is a national private company in the field of andesite mining which has an area of 12.5 Ha Operating Mining Operation License. Location CV Panghegar located in Cilalawi Village, Sukatani District, Purwakarta Regency, West Java Province. CV Panghegar produces split stone stone, and stone ash. Transportation activities of minerals CV Panghegar using the tool Dump Truck Hino Ranger FF 173 MA. CV Panghegar uses conveyance from PT Panghegar Mitra Abadi because CV Panghegar is a subsidiary company. However, the transport equipment has several problems that arise because the age of the transport equipment used is old, the age of the existing transportation equipment in the company has been more than 8 years of use, therefore frequent equipment damage and various other factors, so the problem causes mining production costs which must be spent to be great. Therefore, the problem will be assessed for the replacement of equipment using the rental system. This research was conducted to evaluate the owning costs and operating costs that had to be incurred by CV Panghegar on an alternative selection of the Hino Ranger FF 173 MA Dump Truck transport equipment from the parent company which was old or with a tool rental system. Based on the results of research conducted on CV Panghegar it is known that the total cost of owning is Rp 122.440,77/hour and operating costs Rp. 352,786.57/hour, the total costs that must be incurred by the company using the old tool from the parent company that is Rp 475.227,33 / hour. While the cost to be incurred by the company when renting a new transportation tool is Rp 403.125,13/hour. The value of the Present Worth Cost (PWC) of the old transportation equipment from the parent company is Rp. 3.924.831.321,38 and the Present Worth Cost (PWC) with the tool rental system which is Rp. 3,367,044,123,91. Based on the results of the evaluation carried out in economic terms, it can be recommended that the transportation equipment used today needs to be replaced by renting a new tool because the costs incurred are cheaper than using the old equipment.
SMK Pertambangan of Indramayu is a vocational school dedicated to provide skilled worker for min... more SMK Pertambangan of Indramayu is a vocational school dedicated to provide skilled worker for mining purposes. Unfortunately, a previsit to the school has revealed a lack of facilities and computer skill among students and school facilities. This paper examines a training program held by members of Technical Faculty of Unisba to fill the lack of skill. A training program focused on Microsoft Excel Application for topography mapping was conducted. After the program being held, the skill of training participants in acknowledging, comprehending, and applying Microsoft Excel Application for Topography Mapping was increasing 58.33%. But surfer operating skill for topography mapping was still markedly low.
Dengan melihat prospek pada industri bahan galian diorit yang dimana menjadi salah satu bisnis ya... more Dengan melihat prospek pada industri bahan galian diorit yang dimana menjadi salah satu bisnis yang menguntungkan bagi perusahaan, sehingga agar dapat menunjang kebutuhan produksi dari perusahaan maka diperlukan kajian terhadap bisnis yang dilaksanakan salah satunya dengan melakukan analisis sensitifitas agar dapat memberikan dampak positif bagi perusahaan sebagai tindakan antisipasi perusahaan untuk dapat mengetahui akibat yang terjadi apabila terjadi perubahan parameter ekonomi. Dengan mengidentifikasi masalah yang terjadi seperti bahan galian yang tidak stabil, ketersediaan akan bahan galian untuk kebutuhan kontruksi dan perubahan parameter ekonomi yang terjadi selama penambangan berjalan, hal ini guna untuk mengatasi masalah yang ada seperti bagaimana penentuan dalam mengantisipasi perubahan parameter tersebut, bagaimana mengetahui tingkat sensitifitas dari parameter parameter tersebut.sehingga tercapailah tujuan untuk mengetahui nilai net present value, mengetahui parameter yan...
Competency enhancement in trass utilization was given to local communities of Nagreg Kendan,Bandu... more Competency enhancement in trass utilization was given to local communities of Nagreg Kendan,Bandung, West Java. This activity was intended to explore the potential of local cummunity indeveloping trass deposit utilization for local economy. This activity is expected to providerecommendation and encouragement for local community to develop entrepreneurship in utilizing andmanaging mineral resources potential. This activity was divided into several parts, they are pre-test,counseling and discussion about trass utilization, and also post-test to evaluate local community’sbasic knowledge. Local community shows good knowledge and enthusiasm of local community indeveloping local economy through trass utilization.
Unit of Area Genetics (SGW) as one of the methods in considering geological aspects for geologica... more Unit of Area Genetics (SGW) as one of the methods in considering geological aspects for geologicarea-based development. The geological condition as part of the natural movement in a particularcondition makes it possible to predict its effect on the movement of an area in particular with regard tonatural disasters. Pangalengan who has a million beautiful natural charm, especially from the point ofpan-dang geology need it to be studied based on geological data. The charm is the presence of activevolcanoes in the region such as Mount Malabar, Mount Wayang, Mount Windu and others. In addition,the morphology of Pangalengan is relatively well represented in the highlands, hills and mountainareas as part of Java's tectonic activity. Another evidence of such activity is the existence of fault linesin the Pan-galengan mountains of Southeast-Northwest. Pangalengan who has a million beautifulnatural charm, especially from the point of pan-dang geology need it to be studied based on geologi...
Characteristics of sediment Tras Nagreg as part of the volcanic process in the region provides an... more Characteristics of sediment Tras Nagreg as part of the volcanic process in the region provides anopportunity and potential to be utilized through mining activities. Mining activities, as a capitalintensive,labor-intensive and risk-filled industry, do not always have a negative impact on thesurrounding community, there is something to do with the economic aspects in which all types ofmineral deposits have economic value including tras. Nagreg Kendan Village, Nagreg Subdistrict aspart of Bandung Regency which has tras sediment potential, where in quality and quantity, trassediment in the area has big enough potency to be utilized especially to improve prosperity of localcommunity. Currently, the number of people with productive age is quite a lot, which becomes thecapital for the management of tras going forward, another thing to consider is the existence of thelocation not far from the access road that connects Bandung - Garut, Bandung - Cianjur and Bandung- Jakarta.
Provinsi Jawa Barat memiliki sumberdaya mineral nonlogam dan batuan yang cukup besar. Berdasarkan... more Provinsi Jawa Barat memiliki sumberdaya mineral nonlogam dan batuan yang cukup besar. Berdasarkan hasil perhitungan terhadap analisis keterkaitan antarsektor ekonomi, Location Quotient (LQ) dan angka pengganda di Provinsi Jawa Barat keterkaitan ke belakang sektor pertambangan BGI terhadap sektor-sektor ekonomi hulunya masih kecil αj (<1), yaitu 0,746, dan juga keterkaitan ke depan sektor pertambangan BGI terhadap sektor-sektor hilirnya masih kecil (<1), yaitu 0,710, sedangkan LQ>1 yaitu kabupaten Sukabumi,
Gold mineral mining activity which engaged by PT Aneka Tambang Tbk. UBPE Pongkor is one of the bi... more Gold mineral mining activity which engaged by PT Aneka Tambang Tbk. UBPE Pongkor is one of the biggest underground mining in Java Island which produced more than 382,328 WMT gold ore with 1,723 kg of gold and 14,972 kg of silver by year 2013. PT Aneka Tambang Tbk. UPBE Pongkor has given much positive contributions to West Java Province economy. The benefit that the company has given can be in the forms of direct benefits like contribution on GRDP and multiplying effect while indirect benefits can be in the forms of externality more like backward linkages, forward linkages, the final demand, technological linkages, fiscal linkages. One of many indicators that used in measuring of economic growth in a region is Gross Regional Domestic Product (GRDP). This research showed that as 2003-2013 period, sector of gold and silver mining has only given between 0.04%-0.15% contribution to the total Gross Regional Domestic Product (GRDP) in West Java Province. Based on Analysis of Classification sector 13x13 I-O model, forward and backward linkages for gold and silver mining sector are 0.701 and 0.772. If it is looked at upstream sectors, gold and silver mining does not have a lot of linkages to the upstream and small transaction value, however if it is looked at downstream sectors, gold and silver mining also does not have a lot of linkages to the downstream, but the transaction value that is obtained quite much as IDR 110 billion for base metal industry and finished goods of metal along with IDR 736 billion for another processing plants. Based on analysis of Net Social Gain (NSG), the benefits of social-economy of PT Aneka Tambang Tbk. UBPE Pongkor to West Java Province varies, however it will increase year by year.
Coal Utilization In The Making Of Activated Carbon For Adsorbed Natural Gas
ANG technology generally uses materials or carbon materials known as active carbon. Adsorbed Natu... more ANG technology generally uses materials or carbon materials known as active carbon. Adsorbed Natural Gas (ANG) is one technique of natural gas storage in porous solid media. The solids that are used in the form of carbon materials with certain specifications so that it can absorb and store methane gas at room temperature and pressure state relative (low 93.5 to 4.0 MPa). ANG technology is the best storage technology for methane gas because the gas can be stored at room temperature and atmospheric pressure. Therefore, to improve the adsorption capability of the methane gas, in addition to the choice of raw materials also need to learn the activation method. In order to improve the quality of activated carbon to the sub-bituminous coal C type with chemical activation by mixing semikokas and the activation ingredients with ratio of 1: 3, that is 10 gr semikokas 30 gr activativation ingredients and testing of iodine numbers which gained the highest yield at a temperature of 800oC for 6...
The Existing Socio-techno-economic Paradoxes in the Indonesia Mining Development Program
American Journal of Business, Economics and Management, 2015
The existing paradoxes faced by the Indonesia mining development could be inventoried that it may... more The existing paradoxes faced by the Indonesia mining development could be inventoried that it may include around ten parameters among others between interests of centralized and decentralized purposes, quick and slow yielding, low and high risks and so on. Since 1970s, these phenomena should have been overcome by the government of Indonesia (GOI) to accommodate the national interest at one side and the investors on the other sides, and then the mining development progress has been achieved as the significant existing condition successfully. The progress could be claimed that the role of mining sector have supported the Indonesian economic growth significantly up to the present, including the progress of mineral policy development in utilizing the large mineral resources available in the country. Methodology applied in this study is based on historical descriptive analysis observed by the writer as government official, researcher and lecturer within the last 45 years of job, besides ...
Ekonomi Lokal Sebagai Bagian Dari Pengembangan Wilayah Pertambangan Yang Berdampak Terhadap Pendapatan Daerah (Studi Kasus Pertambangan Pasir Dan Batuan Kab. Bandung Barat)
Prosiding Snapp Sains Teknologi Dan Kesehatan, Oct 14, 2014
Pembangunan industri berbasis sumber daya alam seperti pertambangan memerlukan keterkaitan yang j... more Pembangunan industri berbasis sumber daya alam seperti pertambangan memerlukan keterkaitan yang jelas dari sisi hulu maupun hilir. Hal ini penting dilakukan bagi keberlanjutan ekonomi maupun sosial bagi masyarakat sekitarnya. Kabupaten Bandung Barat memiliki industri pertambangan khususnya bahan galian berupa batuan (batuan andesit, pasir dan lainnya). Adanya aktivitas pertambangan tersebut, secara otomatis memberikan dampak signifikan terhadap masyarakat di lokasi penambangan maupun pemerintahan daerah, salah satu hal dampak adanya aktivitas tersebut yaitu perekonomian lokal dan pajak. Saat ini, pendapatan asli daerah (PAD) dihasilkan tidak berdasarkan teknis produksi yang dihasilkan, namun lebih ke target yang diinginkan dari pihak pemerintah daerah dalam memenuhi kebutuhan PAD-nya, sehingga ada komunikasi terputus antara aspek teknis dan ekonomis, yang apabila terkoneksi dengan baik maka akan mampu memaksimalkan PAD. Metoda yang digunakan untuk memahami permasalahan diatas yaitu kunjungan perusahaan, diskusi, penyebaran kuesioner dan literatur dari SKPD terkait di Kab. Bandung Barat. Hasil kegiatan menunjukkan 83% lingkungan masyarakat sekitar lokasi pertambangan mengalami peningkatan, besaran nilai ekonomi yang diberikan perusahaan untuk masyarakat dirata-ratakan berkisar antara 5.000.000 – 15.000.000 per bulan, tenaga kerja lokal yang diberdaya 95% dari 17 perusahaan yang disurvey. Sehingga pengembangan ekonomi lokal dengan adanya pertambangan batuan dan pasir di Kab. Bandung Barat sangat memberikan dampak yang positif.
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