PGC bridges the gap between big-firm capability and specialized agility. We provide mine owners, developers, engineering firms, municipalities, and the USACE with the critical geological insight needed to mitigate risk on distressed or undermined ground.

Our firm is led by Andrea Prince, a Registered Geologist in Missouri and Professional Geologist in Kansas. Highly regarded for her deep expertise in complex underground mines and unique bedrock formations across the United States, Andrea ensures that PGC delivers precision-engineered geological and geotechnical solutions for every client.

Strategic M/WBE & DBE Compliance

PGC is a certified Minority/Women Business Enterprise (M/WBE). Our strategic alliance with Alpha-Omega Geotech (AOG) offers prime contractors a distinct competitive advantage: Full Credit Utilization: Capture the full dollar amount of your contract toward project diversity goals. Streamlined Bidding: Meet complex WBE/DBE benchmarks with a single, highly qualified partner. Uncompromised Quality: Combine regulatory compliance with industry-leading geotechnical and construction expertise.

Our Methodology

We deliver data-driven findings that withstand the most rigorous regulatory and forensic scrutiny. By pairing advanced subsurface inspections and precise ground characterization with an adaptable, field-ready team, we ensure safe, long-term land use. Our operations are fully compliant, adaptive to unpredictable site conditions, and backed by MSHA and Safety Trained Supervisor (STS) certifications.

Ready to discuss your site?

​Let’s reduce your risk and move your project forward. Contact us today!