Perinvo | Mining Smart Guide (All Ores)

Overview

Use this suite as a structured way to estimate ore, plan costs, compare mining methods, understand recovery, and build a simple feasibility view. You can save your inputs locally (browser) and restore them later.

Perinvo Style WordPress Safe No dependencies

Quick workflow (recommended)

Ore & Reserve → compute ore tonnage + contained metal + recoverable metal.
Cost Simulator → estimate unit cost (per ton) and total OPEX.
Method Selector → choose Open Pit vs Underground (heuristic scoring).
Recovery → convert feed → concentrate/product → tailings.
Environmental → estimate impact score + mitigation checklist.
Safety Matrix → risk scoring and controls.
Feasibility → revenue, cashflows, NPV and payback.

Units & conversions

Contained metal (t) = Ore tonnage (t) × Grade (%)/100

Recoverable metal (t) = Contained metal × Recovery (%)/100

Tip: If grade is in g/t (gold), convert: metal (kg) = ore(t) × grade(g/t) ÷ 1000.

Save & Clear

Click Save to store your inputs in your browser (local). Click Clear to reset everything. Your data stays on your device only (no server).

Ore & Reserve Estimation

Estimate ore tonnage, contained metal, and recoverable metal for any ore. Supports grade in % or g/t.

Tonnage Grade Recovery

1) Ore tonnage

Ore tonnage (t) = Volume (m³) × Bulk density (t/m³)

Volume (m³)

Bulk density (t/m³)

Ore tonnage = —

Note: volume is typically derived from block model / geological wireframes and dilution factors.

2) Contained & recoverable metal

Grade type

Grade value

Recovery (%)

Ore tonnage (t)

Contained = — • Recoverable = —

Cut-off grade note: reserves depend on cut-off grade, dilution, mining losses, and economic assumptions. This module calculates tonnage/metal based on your inputs, not a full reserve classification.

Mini Checklist: What affects reserve reliability?

Factor	Why it matters	Typical action
Sampling density	Higher density reduces uncertainty	Drilling plan + QA/QC
Geological domaining	Controls grade continuity	Wireframes + variography
Bulk density	Direct tonnage driver	Lab density tests
Cut-off grade	Determines what is “economic ore”	Update with price/cost changes
Mining losses/dilution	Impacts delivered grade to plant	Use method-specific factors

Mining Cost Simulator (OPEX)

Build a cost breakdown (per ton and total). This is a transparent calculator: you control the assumptions.

OPEX $/t Sensitivity

Inputs

Mining type

Ore processed (t/year)

Operating days/year

Fuel price multiplier

Mining

Drilling ($/t)

Blasting ($/t)

Load & Haul ($/t)

Grade control ($/t)

Fuel multiplier affects Load & Haul and Power (below).

Processing

Processing ($/t)

Reagents ($/t)

Tailings ($/t)

Site / G&A

Power ($/t)

Labor ($/t)

Maintenance ($/t)

G&A ($/t)

$ / t = — • Annual OPEX = —

Cost breakdown (computed)

Item	$/t	Notes

Tip: use this output as a baseline, then run sensitivities by changing fuel multiplier, grade, recovery, and price (Feasibility module).

Mining Method Selector (Decision Support)

A transparent heuristic scoring model to compare Open Pit vs Underground based on geometry, depth, rock conditions, and constraints.

Scoring Pros/Cons Explainable

Inputs

Orebody depth (m)

Orebody thickness (m)

Dip angle (°)

Rock strength

Environmental constraints

Land availability

Recommendation = —

Scores

Option	Score (0–100)	Interpretation
Open Pit	—	Better for shallow, wide access, lower constraints
Underground	—	Better for deep/steep, land-limited, higher constraints

This is a simplified scoring approach. Always validate with geotechnical studies, hydrogeology, ventilation needs, and safety requirements.

Why this recommendation?

—

Pros & Cons (quick)

Method	Pros	Cons
Open Pit	High productivity, simpler logistics, lower unit cost in many cases	Larger footprint, higher waste stripping, visual & land impact
Underground	Smaller footprint, access deep ore, reduced surface disturbance	Higher complexity, ventilation, ground control, higher unit cost

Processing & Recovery Calculators

Convert feed into recovered metal/product using recovery and concentrate grade assumptions. Includes a basic mass-balance view.

Mass Balance Recovery Tailings

1) Recoverable metal from feed

Ore processed (t)

Grade type

Feed grade

Metallurgical recovery (%)

Recovered metal = —

Use for quick “production potential” from ore throughput.

2) Concentrate production (if applicable)

Concentrate (t) = Recovered metal (t) ÷ (Concentrate grade % / 100)

Recovered metal (t)

Concentrate grade (%)

Concentrate = —

For copper/lead/zinc etc. For gold, product is often doré rather than concentrate.

3) Tailings estimate

Tailings (t) ≈ Ore processed − Concentrate (t) (simplified)

Ore processed (t)

Concentrate (t)

Tailings = —

Tailings mass balance varies by process (water content, rejects, multiple products). Use this as a first-pass estimate.

Environmental Impact Estimator (ESG Lens)

Estimate an impact score and generate mitigation actions. This is a practical screening tool (not a regulatory EIA).

Water CO₂ Tailings

Inputs

Mining type

Ore processed (t/year)

Water use (m³/year)

Energy use (MWh/year)

Tailings (t/year)

Disturbed area (ha)

Biodiversity sensitivity

Community proximity

Impact score = —

Estimated KPIs

Water intensity (m³/t)

Energy intensity (kWh/t)

CO₂e estimate (tCO₂e/yr)

CO₂e is a rough estimate using default grid factor (editable in code if needed).

Mitigation actions (auto-generated)

—

Safety Risk Matrix (HSE)

Add hazards, score likelihood & severity (1–5), and generate risk levels. Export-ready for SOPs and audits.

Likelihood × Severity Controls Audit-ready

Add a hazard

Hazard

Likelihood (1–5)

Severity (1–5)

Controls / actions

#	Hazard	Likelihood	Severity	Risk	Level	Controls

Rule: Risk = Likelihood × Severity. Recommended response: High (15–25) immediate controls, Medium (8–14) action plan, Low (1–7) monitor and maintain.

Gold Toolkit (AU)

Gold-specific helpers: ounces conversion, cyanide consumption estimate, and break-even gold price.

g/t oz Break-even

1) Convert gold production

oz = kg × 32.1507

Gold (kg)

Gold (oz) = —

2) Cyanide consumption (first-pass)

Cyanide (kg) = Ore (t) × Dosage (g/t) ÷ 1000

Ore treated (t)

Dosage (g/t)

Cyanide = —

Actual consumption depends on ore mineralogy, pH control, oxygen, residence time, and detox.

3) Break-even gold price (simple)

Break-even ($/oz) ≈ (Annual OPEX + Annualized CAPEX) ÷ Recovered ounces

Annual OPEX ($)

Annualized CAPEX ($)

Recovered gold (oz/year)

Break-even = —

Feasibility Lite (NPV & Payback)

Build a simple project view using production, price, OPEX, CAPEX, and discount rate. Includes NPV and payback period.

NPV Payback Sensitivity

Inputs

Project life (years)

Discount rate (%)

Recovered metal (t/year)

Price ($/t)

Annual OPEX ($)

Initial CAPEX ($)

Royalty / taxes (%)

NPV = — • Payback = —

This is a simplified feasibility calculator. It ignores depreciation schedules, working capital, inflation, and detailed tax regimes. Use it as a screening tool.

Annual cashflow table (computed)

Year	Revenue ($)	OPEX ($)	Net before tax ($)	After royalty/tax ($)	Discount factor	PV ($)	Cumulative CF ($)

Quiz + Instant Grading

20 questions to reinforce key concepts used in this suite.

Auto-grade Explain

Ready? 👇

When finished, click Grade.