نتایج جستجو برای: mining and quarrying

تعداد نتایج: 16843042  

Journal: :Materials proceedings 2021

Despite EU climate objectives and raw material needs, there is a growing concern caused by the limited direct access to primary sources supplies of valuable materials, heavy reliance on imports. Member states are encouraged design implement effective policies improve domestic materials promote green energy, thus advancing European competitiveness, particularly for high tech products, emerging i...

Journal: :Journal of safety research 2008
Celeste Jacinto C Guedes Soares

INTRODUCTION This paper presents a study on the causes and circumstances of occupational accidents in the Portuguese Mining and Quarrying (M&Q) activity sector. METHOD To this effect, it uses national accident data (2001-2003), giving particular attention to the newly implemented harmonized ESAW/Eurostat variables. The study begins with a broad description of the M&Q sector and identifies its...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

Journal: :Publik: Jurnal Manajemen Sumber Daya Manusia, Administrasi dan Pelayanan Publik 2023

The aim of the study was to determine potential economic structure and competitiveness between sectors in districts/cities South Kalimantan. Shift Share analysis used as research method. results showed that during period 2012-2018, economy Kalimantan, totaling 13 districts/cities, had a competitive sector for each district/city, which could be seen from positive Cij value. It indicated speciali...

Journal: :IOP conference series 2021

The article considers the component composition of soil cover in areas mining sand and sand-gravel material Leningrad region. sites under study are anthropogenically transformed that have a direct indirect impact on natural cover. Direct should include burial soils dumps, complete removal profile as result quarrying changes relief. process rock can lead to change parent rock. Indirect influence...

Journal: :Sophia 2022

Mining operations at Bingham Canyon Mine, Utah, 2009 by Arbyreed. License: CC BY-NC-SA 2.0 Land worldwide is deeply marked human activity, which became heavier, harder, more wasteful, and permanent after the industrial revolution. The landscapes of Anthropocene encompass riddled proving ground test sites, nuclear wastelands, immense open-pit mines, contaminated lands, disappearing bodies water,...

Journal: :Jurnal Informatika Ekonomi Bisnis 2023

Sumatra Island is the third largest island in Indonesia which has extraordinary natural resource potential. 10 provinces are islands with most Indonesia. Each province different resources and geographical conditions so that inequality occurs an uneven economy. This study aims to identify leading sectors prospective each Sumatra. The analysis was carried out on economic between uses Location Quo...

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