WebA cut-off grade of 1.00 g/t Au was applied to material mined within stopes. An incremental cut-off grade of 0.46 g/t Au was used for development material. Stockpile Mineral Reserves are based upon surveyed volumes supplemented by production data as … WebMar 22, 2024 · Cut-off grade is a term used to describe the minimum grade or quality of mineralised material within a mineral deposit that is economically viable to extract. It is the lowest grade of...
(PDF) Optimization of Cut-off Grades for Molybdenum and
WebSep 12, 2016 · Given that the cut-off grade is the key decision variable determining what is processed in a mine (and what is not; with ore processing being the main value generating function of a mining... WebMineral Reserves are reported above a 5.5 g/t Au cut-off. Resources are reported using a 4.22 g/t Au cut-off grade. Open Pit Resources are reported using an in-situ marginal cut-off grade of 0.52 g/t. Category OreType Tonnage Commodity Grade Contained Metal; Proven: In-Situ (UG) 116 kt: gazala
Mill cutoff grade Britannica
WebAnswer (1 of 3): "Marginal" comes from the word "margin", which is the edge of something. So, "marginal" basically means "along the edge", or "borderline". When you're talking about … WebMay 1, 2013 · A priory cut-offs make accessibility more difficult. For example, a block having slightly lower grade than cut-off can be assessed as ore to go into valuable areas within orebody in a manner that profit is higher. (5) It was proved that varying cut-off grades in descending order generated more NPV in comparison with the marginal cut-off grade ... WebAug 1, 2013 · Imagine that marginal cut-off grade is 0.75 g/ton. In this case, a block whose grade simulation is 0.74 g/ton, will be waste. Likewise, a block, whose grade simulation is 0.76 g/ton will be ore. Simulation generates only one possibility. Moreover, cut-off grade itself is also problematic because ore price, processing cost and recovery are ... gazala 1942