Sentence examples for grades of ore from inspiring English sources
Usually per-ounce costs rise as companies dig deeper or develop new sites with less dense, lower grades of ore.
The furnace can also accept different grades of ore.
The grades of ore elements are analyzed by fractal and multifractal methods.
Rock-breakers work with geologists and surveyors to make sure that only profitable grades of ore are mined.
We also believe negotiation skills could be used to ameliorate the multiple points in the chain that leads to lower wages for women, especially the first: increasing access to better grades of ore.
Dr. Hein said dwindling supplies of terrestrial copper — a key ingredient of industrialization used in everything from wires and switches to pipes and roofs — have forced miners on land to go after increasingly low grades of ore and have raised interest in seabed resources.
Although China formerly was regarded as deficient in iron ores, huge quantities of varying grades of ores have been discovered that are widely distributed and often located close to coal supplies.
We employ a new real options model for determining the optimal cut-off grade of ore under stochastic prices.
Over the last 30 years the average grade of ore bodies has significantly decreased while the proportion of waste removal has in many cases more than doubled.
The history of mineral flotation is a record of over a century of impressive innovations, especially in the development of flotation chemistry and chemicals, the principles of their action, their manufacture and the role they play in sustaining efficiencies and productivities even as the quality and grade of ores decline, and the severity of the challenges increases.
