Cut-off grade is one of the very important technical and economic parameters, which affects the economic and social efficiency in a mine enterprise. It is also the basis of the deposits technical economy evaluation, feasibility study, mining planning and design and the foundation of the decision-making in mining investment. Thereby, cut-off grade optimization is one of the core contents and the...

-Increasing returns to scale (RTS) is frequently postulated as affecting productivity in surface coal mining. However, it is not clear whether increased capital intensity or increased output is the relevant phenomenon. A ray-homothetic production function that incorporates the capital-labor mix and fixed site geology into the scale elasticity is presented and estimated with a micro (mine level)...

Antony K Cooper, Harold Moellering, Jan Hjelmager, Petr Rapant, Tatiana Delgado, Dominique Laurent, Serena Coetzee, David M Danko, Ulrich Düren, Adam Iwaniak, Jean Brodeur, Paloma Abad, Michel Huet and Abbas Rajabifard Built Environment, CSIR, PO Box 395, Pretoria, 0001, South Africa Department of Geography, Ohio State University, Columbus, OH, 43210, USA Kort & Matrikelstyrelsen, Rentemesterve...

Macdougall, Geol. Soc. India Mem. 10, 53 (1988). 39. Partially supported by National Science Foundation grants (EAR 9118008, EAR 9205054, EAR 9209719, and EAR 9206502) and the Institute of Human Origins. We are grateful to R. K. Srivastava for providing the Sarnu samples and to the staff and scientists of the Directorate of Geology and Mining, Gujarat State, for their assistance in the field-sa...

The Skellefte mining District is located in northern Sweden and comprises Palaeoproterozoic, metamorphosed, supracrustal rocks and associated intrusive rocks, which are all host to several ore deposits. Modelling was performed in the GoCAD software platform, using structural geology and petrology as well as magnetic, gravity, seismic, electric and electromagnetic geophysical data, in order to p...

The Geotourism Students’ Scientific Club (GSSC) is operating at the Department of General Geology and AGH University Science Technology (AGH UST), bringing together young enthusiasts Earth sciences, Faculty Geology, Geophysics Environmental Protection. It has been continuously since 2003. primary objective GSSC to arouse interest in scientific work field as well popularise geotourism student co...

Searching and mining huge image databases has become a daunting task for many application areas such as astronomy, medicine, geology, oceanography, and crime prevention. We introduce a new image indexing and retrieval system, PixSearcher, that computes image descriptors from pixels obtained by thresholding images at different levels. In contrast to raster techniques (which use the entire pixel ...

Jan Valíček 1,2,3,*, Zuzana Palková 1, Marta Harničárová 2,3, Milena Kušnerová 2,3 and Ondrej Lukáč 1 1 Technical Faculty, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949-76 Nitra, Slovakia; [email protected] (Z.P.); [email protected] (O.L.) 2 Faculty of Mining and Geology, Vysoká škola báňská—Technical University of Ostrava, 17. Listopadu 15, 708-33 Ostrava, Czech Rep...

Aspects in Mining & Mineral Science Sustainable Development Opportunities for the Kiruna Area (N Sweden) Miłosz Huber* Geology, Soil Sciences, and Geoinformacy Department, Earth Environment Sciences Institute, Maria Curie-Skłodowska University Lublin, Poland *Corresponding author: Huber, Curie- Skłodowska 2d/107 Kraśnickie Rd, 20-715 Submission: October 13, 2022;Published: January 10, 2023 DOI:...