The coal mining industry is one of the sectors with a high level of occupational accident risk due to the use of heavy equipment, extreme working conditions, and exposure to hazardous dust and gases. South Sumatra Province, as one of the largest coal-producing regions in Indonesia, has experienced a significant increase in coal production over the years. This increase in mining activities has c…
Portofolio ini membahas praktik keinsinyuran yang dilakukan pada kegiatan pascatambang pada IUP OP Batuan di Kabupaten OKU Timur. Dalam melaksanakan praktik keinsinyuran, terfokus pada bidang keahlian. Laporan ini membahas hasil praktik keinsinyuran dengan fokus pada tata kelola kegiatan pascatambang berdasarkan Keputusan Menteri ESDM nomor 1827 K/30/MEM/2018 tentang Pedoman Pelaksanaan Kaidah …
Pada kondisi aktual setelah blasting seringkali ditemukan tidak teraturnya kontur atau undulasi pada lantai penggalian yang menyebabkan penampungan air di berbagai titik setelah terjadinya hujan. Genangan yang tidak terkendali bahkan dapat memicu degradasi kondisi jalan, meningkatkan cycle time, serta menurunkan produktivitas secara keseluruhan. Selain undulasi, kondisi pit floor yang tidak mem…
PT Batu Alam Selaras (PT BAS) is a coal mining company in Lahat Regency, South Sumatra Province, which is obligated to implement mine reclamation in accordance with the Decree of the Minister of Energy and Mineral Resources No. 344.K/MB.01/MEM.B/2025. This study aims to analyze the technical and economic aspects of the Period IV reclamation plan (2026–2028) and evaluate its compliance level w…
PT Priamanaya Energi is one of the coal mining companies located in Lahat Regency, South Sumatera. The coal mining operations at PT Priamanaya Energi are conducted using the open pit mining method. At the beginning of 2025, high rainfall resulted in an increase in the total inflow of water into Pit PE, causing the sump to exceed its storage capacity and overflow. This study aims to determine th…
PT Ulima Nitra Tbk is one of the contractors operating in the Indonesian mining sector. PT Ulima Nitra Tbk holds a Mining Business License covering an area of 66.13 hectares, with its coal mining operations taking place in Lahat Regency, South Sumatra Province, uses the open-pit mining method. In open-pit mining, the removal of overburden is a crucial stage as it directly determines the sustain…
This study aims to evaluate the productivity of loading and hauling equipment used in overburden removal activities at PT Bahana Selaras Alam Site Gorby Putra Utama, North Musi Rawas Regency, South Sumatra. The equipment used in the overburden stripping operation consists of a Hitachi 350 Excavator as the loading unit and HINO 500 Dump Trucks as the hauling units. The research method involved c…
The increasing production of coal fly ash waste in Indonesia and its relatively low utilization rate, highlighting the need for effective treatment methods to enhance its added value. The objective of this research was to investigate the effect of the Sequential Acid–Alkaline Leaching (SAAL) method on the chemical composition of coal fly ash (CFA) using X-Ray Fluorescence (XRF) analysis. Coal…
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Sumur DNA-091 di PT. Pertamina Hulu Rokan Zona 4 Field Prabumulih, Provinsi Prabumulih, merupakan bagian dari sumur yang mengalami penuruan tekanan reservoir, sehingga tidak lagi mampu berproduksi secara alami. Untuk mempertahankan laju produksi, digunakan metode pengangkatan buatan Gas Lift. Saat awal pengoperasian, sumur ini mencatat produksi sebesar 265 BFPD dengan parameter jumlah valve ter…
High rainfall at the SJS Pit of PT Bukit Asam, Tbk. in January amounted to 460.3 mm with a rain duration of 334.27 hours, causing an increase in delay time and disrupting the smooth operation, so that the coal supply was not optimal and the needs were met through rehandling activities from temporary stockpile to CHF 5. The condition of the transportation road that does not meet the standards, e…
The application of the strip mine method at PT Dizamatra Powerindo altered the topography into a massive basin that functions as a catchment area, causing rainwater to flow directly and accumulate in the mine opening area. The DP pit 3 area is currently a void (mine lake) filled with water and mud, which is planned to be re-mined. The research method uses a quantitative approach through direct …
Limestone blasting activities at PT Semen Padang generally produced fragmentation that tended to fall within the fine to medium size category. The dominance of excessively fine fragments may increase dust generation and fine material loss, while also indicating inefficient utilization of blasting energy. This condition was influenced by the actual blasting geometry and rock mass conditions in t…
Limestone hauling activities at PT Semen Padang are affected by the haul road geometry from Front B to Limestone Crusher VI. This study aims to analyze haul road geometry, calculate cycle time and hauling equipment productivity, and provide improvement recommendations to increase the production achievement of Front B toward the estimated monthly target. The parameters analyzed using ArcMap 10.8…
South Sumatra coal has great potential as a fuel for coal-fired power plants (PLTU), but its quality variations require quality control efforts to meet operational specifications, one of which is through the coal blending process. This study aims to analyze the effect of variations in coal blending ratios on proximate parameters and to evaluate their suitability with the characteristics of MT-4…
This study aimed to analyze the relationship between vegetation canopy density and water management as indicators of reclamation success in a 26.09-ha post-mining area. Vegetation density was analyzed using the Normalized Difference Vegetation Index (NDVI), while water management conditions were assessed through infiltration rate, runoff coefficient, runoff discharge, and actual erosion rate. T…
PT Bukit Asam (Persero) Tbk implements a market brand system to maintain coal quality consistency in accordance with customer specifications. One of its products is BA-48 blended coal, which is produced through a coal blending process involving the mixing of different coal types to achieve the desired quality targets. In the blending process, product quality homogeneity is a critical factor as …
PT Priamanaya Energi is a coal mining company in South Sumatra Province that operates a disposal area spanning approximately 105 hectares. Most of this area consists of active disposal sites that lack adequate vegetation cover, making them vulnerable to erosion. High sedimentation levels in the North Settling Pond (KPL) and soil material carried by surface runoff out of the disposal area indica…
This study examines the effect of weather factors on inland tin production and offshore tin production at PT Timah Tbk across several quarterly periods. The data used in this study are secondary data consisting of rainfall, air humidity, air temperature, and wind speed variables observed periodically. The objectives of this study are to analyze the effect of weather factors on inland and offsho…
PT Bukit Asam (Persero) Tbk., manages a Mining Business License (IUP) covering an area of 40,347 hectares through the Tanjung Enim Mining Unit (UPTE), which encompasses four operational blocks: Banko Barat, Banko Tengah, Muara Tiga Besar, and Tambang Air Laya. This study was conducted at Pit 2, Banko Barat, at the Livestock Dump Hopper 4 (LSDH 4) unit, using an open-pit mining system that invol…
This research was conducted at the Pit Quarry of PT Bukit Asam (Persero) Tbk, specifically in the andesite mining area of Bukit Tapuan, with the objective of analyzing the influence of discontinuity plane orientation on the throw direction and fragmentation size distribution resulting from blasting activities. The research method included field observations using scanline mapping to obtain disc…
Tin mining is a major economic sector in Bangka Belitung and has shifted from land-based to offshore operations due to the declining availability of terrestrial reserves. Offshore mining activities using Kapal Keruk (KK), Kapal Isap Produksi (KIP), and Ponton Isap Produksi (PIP) have led to increased sedimentation and changes in water quality, necessitating an evaluation of marine environmental…