Mine Ventilation Upgrade
Mining
Project details
Performed mine ventilation network modeling and upgrade recommendations for underground operations.

Mining and Quarry Consultants
Groff Engineering & Consulting PLLC is a Kentucky-based mining consultancy established in 2017, specializing in underground mine engineering, mineral reserve estimation, mineral appraisals, and due diligence for acquisition transactions. It serves domestic and international clients in hard-rock, aggregates, salt, limestone, coal, and oil and gas mineral sectors. Its principals hold professional engineering licenses across 18 states and maintain credentials as a CRIRSCO Competent Person and IIMA Certified Minerals Appraiser.
Certified Minerals Appraiser (CMA) · Certified MSHA Instructor: Surface & Underground, MNM, Unlimited
Brian GroffPrincipal
Grant ElliottGeologist
Alireza ValianSenior Engineer
Kayla M. HendersonSenior Engineer
Providing comprehensive planning and design for large-opening room-and-pillar operations and other subsurface mining methods.
Measuring atmospheric pressure and air mass flow, combined with advanced computer modeling of network airflow.
Evaluating subsurface opening integrity and safety using numerical finite difference modeling techniques when appropriate.
Authoring independent technical reports compliant with international reporting codes for placer, stratified, and evaporite deposits.
Supervising field programs including core drilling, core logging, and geologic testing to support site planning.
Conducting professional valuations using sales comparison, cost, and income approaches for estate, litigation, and royalty purposes.
Providing market appraisals for petroleum and natural gas properties under standard appraisal guidelines.
Work in this area is organized into supported delivery tasks.
Support includes Analyzing potential mining investments to identify.
Support includes quantify.
Support includes highlight operational.
Support includes geological risks.
Conducting volumetric measurements and topographic mapping to provide accurate inventory and site management data.
Mining · Aggregates & Quarrying · Oil & Gas
Mining
Performed mine ventilation network modeling and upgrade recommendations for underground operations.
Mining
Prepared resource models and valuation reports for frac sand properties.
Aggregates & Quarrying · Client: Indian Creek Materials, LLC
Conducted reserve estimation, appraisal, and acquisition due diligence for an aggregate producer.
Aggregates & Quarrying · 2017 · Client: Blue Water Industries LLC
Provided acquisition due diligence services for the 2017 transaction involving Vulcan - Aggregates USA assets valued at $290 million.