Serving the Mining Community for Over 25 Years

On Site

On site

In the Field

In the field

Or Underground

Or Underground
MDA has the expertise to move your project to the next level

Mine Development Associates, Inc.

Mine Development Associates (MDA) provides geologic and engineering services to the mining industry.  Our expertise lies in advising clients about their mining projects at any stage of exploration, development, production, or closure.  MDA’s experience ranges from grass-roots exploration to daily mine operations and includes every step of a project’s development.  Our goal is to provide clients with the best data and analysis of their project, allowing them to make more informed decisions regarding their project.  MDA’s senior mining experts have extensive experience in all types of mining in all climates. Integrity, competence and independence have directed the firm for more than 25 years, assuring our clients the highest level of service.

Scope of Services

  • Geologic Modeling
  • Geostatistical Data Analysis
  • Sample Integrity Studies
  • Develop Sampling Reliability Protocol
  • Exploration Program Management
  • Exploration QA/QC
  • Exploration Program Design
  • Mineral Exploration Targeting
  • Geologic Mapping
  • Drill-Hole AnalysisModel / Production Reconciliation 
  • Full Feasibility Studies
  • Due Diligence Project Review
  • Pit Optimization
  • Ore Reserve Estimation
  • Underground Mine Design
  • Capital / Operating Cost Development
  • Manpower / Equipment Requirements 
  • Preliminary Economic Analysis
  • Reserve Verification & Audit
  • Open Pit Design
  • Detailed Mine Planning
  • Underground Mine Planning
  • Mining Method Optimization
  • Royalty Auditing 
  • Property Evaluation & Appraisal
  • Project Management
  • Start-up Assistance
  • Closure Assistance 
  • Operational Staff Support
  • Data Gathering & Verification
  • Mining Method Optimization
  • Customized Database Development

Recent Clients


MDA's Senior Team

Our Team Member
Neil Prenn
Principal Engineer / Founder

Our Team Member
Michael Gustin
Senior Geologist / President

Steven Ristorcelli
Principal Geologist

Our Team Member
Thomas Dyer
Senior Engineer

Paul Tietz
Senior Geologist

Meet the MDA Team