Mine Ventilation Upgrade Groff Engineering managed the replacement of the ventilation system for an underground large opening room and pillar stone mine, improving airflow capacity by more than 300% while using the same amount of power as the original system. The...
Frac Sand Resource Reports “Frac sand”, or “frac proppant,” is a sand with very durable and very round grains. It is a crush-resistant material produced for use by the petroleum industry. It is used in the hydraulic fracturing process (known as...
Indian Creek Materials, LLC Through the Fall season of 2018, Groff Engineering & Consulting provided due diligence support to a Missouri-based company seeking to acquire two aggregates companies located in south central Missouri – Gable Stone Company and...
Acquisition of Aggregates USA Quarries In the fall of 2017, Groff was part of a due diligence team that evaluated several quarry locations available for purchase as a result of divestitures resulting from the acquisition of Aggregates USA quarries by Vulcan Materials...
Resource Model and Reserve Estimate Groff has multiple domestic and worldwide experiences in the cement industry, and in 2017 was tasked with updating the resource model and reserve estimate for a Greenfield site in Tanzania. As part of the task, a full analysis of...
