What is a core barrel? The core barrel is an essential part of each coring practice as it collects the core sample in its inner tube and simultaneously its outer tube acts as the BHA. Core barrels are not all ...
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Classification of the Drilling Rate Index
What is drilling rate index? DRI is a measure of the difficulty or ease of drilling rock, and it was developed at the Norwegian University of Science and Technology in Trondheim, Norway. The DRI value is strongly related to the uniaxial ...
Placer deposits
Placer deposit are natural concentration of heavy minerals caused by the effect of gravity on moving particles. When heavy, stable minerals are freed from their matrix by weathering processes, they are slowly washed downslope into streams that quickly winnow the ...
Optimisation of Cut-Off Grade Considering Dilution and Waste Rehabilitation Costs
A paper written by: Pascal Amedzrovi, George Agyei, University of Mines and Technology, Tarkwa, Ghana. The most important factor in mine production planning is called cut-off grade. Therefore, it’s accuracy is important as it can seriously impact the net present ...
Key informations about Escondida Mine
Location At 170 km southeast of Antofagasta, in the northern Chilean Atacama Desert, sits the copper porphyry deposit known as Escondida. In Spanish, the name Escondida means “hidden.” It comes from the primary orebody, which is concealed by hundreds of ...