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All Journal Journals Mining Engineering : Bina Tambang Jurnal Penelitian Pendidikan IPA (JPPIPA) Science and Environmental Journals for Postgraduate
Hazqan Hari Asri
Universitas Negeri Padang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics Social Sciences

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Metode Selective Mining untuk Antisipasi Penurunan Kadar Bijih Nikel dari Data Pemboran terhadap Realisasi Hasil Penambangan pada Blok Yudistira PT Elit Kharisma Utama, Desa Morombo, Kecamatan Lasolo, Kabupaten Konawe Utara, Provinsi Sulawesi Tenggara Hazqan Hari Asri; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1596.486 KB) | DOI: 10.24036/bt.v3i4.102297

Abstract

Abstract. PT. Elit Kharisma Utama (EKU) is the owner of Mining Business License (IUP) engaged in nickel ore mineral commodity, the project location is located in Morombo Village, Lasollo Sub-district, Konawe Utara District, Povinsi Tenggara Tenggara. One of the obstacles in nickel ore mining is the change of nickel ore content (Ni) from drill data that is not in accordance with the level of mining realization results, this mismatch can decrease the quality of production. In mining operations on the front of the Yudhistira block mine, a case of production report data in January 2018 showed that the result of laboratory analysis showed a significant decrease in nickel ore 0.12% content from exploration data on mining content. In this research applied selective mining method on nickel ore excavation activity at mining front. The objective of this research is to know how the change of nickel ore content (Ni) from drill data with the realization of mining and the result of data processing will be analyzed for subsequent can be produced a recommendation. The research method consists of making block model from drill point data and processing of result of mining realization to know the level. The next step is to analyze the level data to know the average of nickel ore content. The average result of mining realization is Ni = 1.80%. while the difference of content from drill data with the realization of mining is Ni = 0.04%. From the research results can be concluded that the content of mining results in accordance with the contract of sale Ni = 1.84%        -1.80% reject.Keywords:  Nickel, drill hole, Blok Model, Selective Mining, Grade
The Relationship between Knowledge and Behavior of Local Communities in Maintaining Environmental Conservation: Literature Review Hazqan Hari Asri; Abdul Razak; Nurhasan Syah; Skunda Diliarosta
Science and Environmental Journal for Postgraduate Vol 6 No 1 (2023): Science and Environmental Journals for Postgraduate (SENJOp)
Publisher : Postgraduate School, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/senjop.v6i1.222

Abstract

The Environmental Impact Analysis (EIA) is part of the science of development ecology which studies the reciprocal relationship or interaction between development and the environment. The existence of EIA is to reduce the negative impacts that will be caused by activities, both development and mining. EIA is carried out as a tool that perfects the planning process for a development activity which not only pays attention to the social aspect but also to the aspect of the influence of the activity on social culture. The method used in this research is a qualitative descriptive method using interviews as a data source. The results of this research are that 96.67% of the population in the development area are native Dayak people who have various kinds of customs, one of which is ngariau and manyanggar which are used for land clearing. Furthermore, if a social conflict occurs, "Jipen" will be imposed according to applicable customs. As for the results regarding community attitudes and perceptions, there were 43.33% of the community agreed with the mining activity plan.
The Effect of Providing Ultrafine Nanobubbles (UFB) Liquid Organic NPK Fertilizer on the Growth of Pueraria javanica Plants in Ex-Coal Mining Land Areas Hazqan Hari Asri; Abdul Razak; Nurhasan Syah; Skunda Diliarosta; Muhamad Sholichin
Jurnal Penelitian Pendidikan IPA Vol 11 No 3 (2025): March
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i3.10572

Abstract

One of the main challenges in the reclamation process of former coal mining land is low soil fertility. Common soil characteristics found in former mining land include unbalanced pH, low organic matter content, poor soil structure, and minimal availability of nutrients. This makes it difficult for plants to grow and develop optimally in former mining land areas. This type of research is an experimental research with a Research Design using a Completely Randomized Design (CRD) 4 x 6. The population of this study was all Ruji Bean Plants (Pueraria javanica) growing in the Wire House area of PT. Pacific Coal Mining with a sample of this study of 24 Ruji Bean Plants (Pueraria javanica). The results of this study are that the provision of UFB Organic NPK fertilizer has been proven to help improve soil conditions. The dosage of UFB liquid organic NPK fertilizer solution for optimal Ruji Bean plant growth is in treatment 4 with a dose (90 ml). In terms of economy, the production of UFB liquid organic NPK fertilizer is IDR 40,300/liter, while the price of liquid NPK fertilizer on the market is IDR 100,000/liter. So, the use of UFB liquid organic NPK fertilizer solution can be a good choice for reclamation activities, this can save fertilization costs for post-mining land reclamation activities and is environmentally friendly because UFB liquid organic NPK fertilizer is made from organic materials.
Co-Authors Abdul Razak Muhamad Sholichin Nurhasan Syah Skunda Diliarosta Yoszi Mingsi Anaperta