Due Diligence

Groff Engineering provides independent mining due diligence services to support acquisitions, investments, and project financing decisions.

We evaluate mining assets to identify technical risks, operational challenges, and economic potential, giving clients the information needed to make informed decisions.

What is Mining Due Diligence?

Mining due diligence is the process of evaluating a mining project or property to determine its viability, risks, and opportunities.

This typically includes a review of:

• Geological data and resource estimates
• Mineral reserve calculations
• Mine planning and production assumptions
• Capital and operating cost estimates
• Environmental and regulatory factors

The goal is to ensure that the project is technically sound and economically realistic before investment or acquisition.

Technical Due Diligence for Mining Projects

Groff Engineering performs detailed technical due diligence reviews focused on real-world mineability and operational feasibility.

Our evaluations include:

Geological & Resource Review

• Verification of geological models and assumptions
• Review of drilling data and QA/QC procedures
• Assessment of mineral resource and reserve estimates

Mine Planning & Operations

• Evaluation of mining methods and sequencing
• Review of production schedules
• Equipment and infrastructure assessment

Processing & Metallurgy

• Review of processing methods and recovery assumptions
• Evaluation of plant design and throughput

Cost & Financial Review

• Validation of capital (CapEx) and operating costs (OpEx)
• Identification of key financial risks
• Sensitivity to commodity prices and assumptions

Risk Identification and Investment Decision Support

Not all mining opportunities are worth pursuing.

Groff Engineering focuses on identifying:

• Technical risks
• Data gaps and uncertainty
• Overly optimistic assumptions
• Operational constraints

Our findings provide a clear, unbiased assessment to support:

• Acquisitions and divestitures
• Project financing
• Equity investment decisions
• Strategic planning

Independent Due Diligence for Lenders and Investors

We work with:

• Private investors
• Mining companies
• Financial institutions
• Lenders’ Technical Advisors (LTA teams)

Our role is to provide independent, technically sound evaluations that support confident decision-making.

Why Choose Groff Engineering?

• Mining engineers with real operational experience
• Strong background in resource estimation and reserve reporting
• Experience supporting acquisitions and due diligence teams
• Independent, objective technical assessments
• Ability to integrate geology, engineering, and valuation