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eng.stripping-ratio-mining Calculator
Calculates the stripping ratio (waste:ore by volume or mass) for open pit mining and the breakeven stripping ratio from costs. Breakeven stripping ratio = (ore revenue − processing cost) / (mining cost per unit waste) — pits are deepened until the actual ratio equals breakeven.
Inputs
Ore Volume M3
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Waste Volume M3
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Ore Grade Pct
Reference formula or conversion factor shown for context.
Ore Density T M3
Mass per unit volume (kg/m³). Water: 1,000. Air: 1.225. Steel: 7,850. Affects buoyancy, flow, and structural loads.
Results
stripping ratio (t waste/t ore)
The proportional relationship between two quantities.
ore tonnage
Sample size or count used in the calculation.
contained metal
Sample size or count used in the calculation.
total material moved
The combined total across all inputs and components.
economic SR
Sample size or count used in the calculation.
high SR
Reference formula or conversion factor shown for context.