A series of mining-related online calculator apps are here for everyone's use. The rationales for the apps are based on discussions with colleagues and conversations seen on LinkedIn and X.
Each of the simple apps were originally Excel based. These online apps were created using Zite, an interactive AI app builder. Zite is great for those that want to build sharable apps but don't have any coding knowledge.
The intent of the apps was to develop the algorithms and logic for those who can’t or don’t want to take the time to build them. Or maybe someone just wants to play around with some exploration numbers.
Intercept Smearing Interpreter is used to evaluate if any grade smearing is occurring when drill intercepts are publicly reported. Are high grade sub-intervals increasing the grade of lower grade widths? Input the main drill interval and the various sub-intervals to calculate the grade of the residual zone. Is it ore or waste?
The Rock Value Calculator allows the user to calculate both the dollar value of the insitu rock and the NSR rock value. This approach can be applied to grab samples, core samples, or resource estimates.
Simply enter the metal grades and the rock values are calculated on a insitu “$ per tonne” basis. Input the process recoveries and smelter payable factors to determine the NSR rock value. Is this high value rock?
Similar to the Intercept Smearing Interpreter, this tool is a more detailed examination of a drill intercept. It calculates the residual grade, the insitu rock value for each sub-interval, and equivalent grades for user selected sub-intervals.
It also calculates the NSR rock value and the individual metal value contribution. More inputs such as metal prices, recoveries, and smelter payabilities are required.
This tool allows the user to take a Resource or Reserve estimate and conceptualize a potential production scenario. This would include a realistic processing rate based on Taylor’s Rule.
It determines the associated annual metal production (oz/year, lb/year). The tool also estimates the insitu rock value and total contained metal for the Reserve.
This tool allows the User to determine the Au breakeven cutoff grades based on inputs such as the gold price and operating costs. It calculates both open pit and underground cutoff grade scenarios.
Based on the input costs, the app also calculates the AISC (although without sustaining capex) for different gold grades to show the impact declining or increasing head grades can have on AISC.
This tool allows the user to create a simple project cashflow model. It can examine both open pit and underground projects.
The user inputs tonnes, grades, and costs, and the app will calculate key economic metrics such as NPV, IRR, and payback period. The user can view a summary or the entire cashflow detail.
What is the trend in metal prices that are being used to define ore and waste in studies? In other, what metal prices are studies using these days versus the past?
The Ore Trend App enables anyone to plot the prices used in a study against decade long metal prices, the 3 -year price average, and against what others are using in their studies. Seven metals are covered (Au, Ag, Pt, Cu, Ni, Pb, Zn).
This tool allows the user to evaulate pit slope design criteria, calculating an inter-ramp angle based on bench criteria, or calculaing the required bench width based on a specified inter-ramp angle.