Purpose is to identify the basic joint systems, their characteristics, distribution within rock mass, and determine impact of joints on bench stability. Methods. The risks strain emergence in form blocks sliding along weakness surfaces local areas were determined based upon definition stability loss. results large-scale measurements jointing processed using circular bar diagrams as well stereog...

The aims of this research are (i) to find out the economic base sector in Nunukan Regency; (ii) knowing shift structure Regency (iii) classifying pattern growth Regency. This method uses a descriptive quantitative approach. data used study is secondary from 2015-2019. analysis Location Quotient (LQ) Analysis, shiftshare and class typology. results LQ show that sectors have comparative advantage...

process mining includes the automated discovery of petri nets from event logs. these event logs are the starting point for various discovery and analysis techniques of the process.  in this paper process model is developed using colored petri nets (cpns) and the supporting software package cpn tools. the restaurant process model is represented for the analysis using a combination of process min...

the first step in mining activities is rock excavation in both mine development and production. constant pressure for cost reduction and creating an improved/safe work environment for personnel has naturally resulted in increased use of mechanical excavation systems in many mining operations. also, mechanical excavation and mining is more compatible with automation, meaning possibility of reduc...

soil erosion causes sediments to be detached from their source materials and transported as suspended particles. the present study was conducted to evaluate the effects of sand exploitation on the distribution of suspended sediments in the educational and research forest watershed of tarbiat modares university, which comprises approximately 50,000 ha. fifty-one water samples were collected befo...

rajasthan is one of the main mineral potential state of india. during the last 30 years it has witnessed enormous expansion of mining industries, but mining of most of the minor minerals coupled with changing climate has posed serious problems to the environmental fabric in the state, apart from base metal beneficiation plants. groundwater is also being polluted day-by-day by effluents generate...

Objectives To examine whether differences in work disability duration between out-of-province and within-province workers differed by industry jurisdictional context. Methods Workers’ compensation data were used to identify comparable lost time, work-related injury musculoskeletal disorder claims accepted six Canadian jurisdictions 2006 2015. Out-of-province identified as who filed a different ...

Mining and quarrying waste is the second largest stream in Europe. Sulfidic ore processing residues (tailings) pose a large challenge, because they contain hazardous metal(loid)s can lead to acid mine drainage. However, tailings also valuable base, precious, critical metals, which be used different technological applications, as well silicates clay minerals that offer possibilities for use buil...

This paper focuses on determining the differences between economic value added (EVA), net operating profit after tax (NOPAT), earnings before interest and taxes (EBITDA), income or loss for non-financial business entities in Republic of Croatia period 2002–2021. The main objective this is to determine whether activities create added, rank them according selected indicators based EVA. Research r...