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Mineral resource estimation is used to determine and define the ore tonnage and grade of a geological deposit, from the developed block model. There are different estimation methods used for different scenarios dependent upon the ore boundaries, geological deposit geometry, grade variability and the amount of time and money available.
The reserve portion of the ratio is the amount of a resource known to exist in an area and to be economically recoverable (proven reserves). The production portion (denominator) of the ratio is the amount of resource produced in one year at the current rate. [1] RPR = (amount of known resource) / (amount used per year)
As a decision tool, it is simple to understand. The simplicity of the formula allows users to freely choose variables, e.g., length of the calculation time, whether overhead cost is included, or which factors are used to calculate income or cost components.
Looked at simply, there are two methods to calculate the utilization rate. The first method calculates the number of billable hours divided by the number of hours recorded in a particular time period. For example, if 40 hours of time is recorded in a week but only 30 hours of that was billable, the utilization rate would then be 30 / 40 = 75%.
Calculate using the traditional equation: = Convert this S value to using the relationship above. Calculate the runoff depth using the CN runoff equation above (with 0.05 substituted for the initial abstraction ratio).
Resource estimates are undiscovered volumes, or volumes that have not yet been drilled and flowed to surface. A non-reserve resource, by definition, does not have to be technically or commercially recoverable and can be represented by a single, or an aggregate of multiple potential accumulations, e.g. an estimated geological basin resource. [14]
According to the New York Times, here's exactly how to play Strands: Find theme words to fill the board. Theme words stay highlighted in blue when found.
A net energy gain is achieved by expending less energy acquiring a source of energy than is contained in the source to be consumed. That is =. Factors to consider when calculating NEG is the type of energy, the way energy is used and acquired, and the methods used to store or transport the energy.