Acquisition of Aggregates USA Quarries

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 Company. Timelines are typically very short for such opportunities, and Groff’s expertise in geologic modeling and reserve estimation for sedimentary deposits was tested. A total of 11 geologic models and initial reserve estimates were completed within a two-week period, which provided the Blue Water team the confidence needed to place their initial offer, and ultimately emerge as a new aggregates entity; Blue Water Industries, LLC.

As Reuters reported, Vulcan Materials Co. was required by the U.S. Department of Justice to divest 17 crushed stone operations in Tennessee and Virginia in order to acquire Aggregates USA. Under the terms of the proposed settlement, Vulcan would divest Aggregate USA’s 13 rock quarries and yards and four inactive quarries to Blue Water Industries or another U.S.-approved buyer. Vulcan had entered into an agreement with Blue Water Industries to sell the quarries for $290 million, which closed on December 29, 2017.

Groff has served on several due diligence teams, both domestic and international. The experience, qualifications, and ability to perform mineral resource and reserve estimates and mineral valuations means that your due diligence efforts get a holistic view of each site’s potential. Additional services post-acquisition are often provided to its clients, such as support for purchase price allocations (PPA), and establishment of internal centers of excellence for mine planning and operations improvements.

Project Details

Client: Blue Water Industries, LLC
Date: 2017

Contact Us

Address: 31 S Maysville Rd.,
Mt. Sterling, KY 40353 USA
Phone: (859) 432-0018
Email: [email protected]

Resource Model and Reserve Estimate

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 the drillhole data and assays was performed. Statistics and correlation matrices were generated in R. Drillholes were reviewed in Carlson Software, and strata contacts and faults were identified. Understanding the complex nature of the deposit, expertise in geostatistics was brought in from Alma Ground. They used Datamine to perform the multi-structure kriging, and validate the results with the initial drillhole and assay statistics. A final volume variance correction completed the resource model and allowed Groff to complete the reserve estimate in Carlson Mining. This collaborative effort, and the expertise of the team members involved, led to a much better resource model and allowed us to report more reserves than would have been reported using less sophisticated methods.

Groff Engineering understands the challenges in the cement industry and works to develop mine plans that maximize the recovery of the mineral resource, while maintaining the desired characteristics of cement plant raw feed. Applying best practices in production sampling, grade control modeling, and statistically valid resource modeling allows Groff to develop mine plans that are practical and effective.

Project Details

Client: Mamba Cement Company, Ltd
Date: 2017

Contact Us

Address: 31 S Maysville Rd.,
Mt. Sterling, KY 40353 USA
Phone: (859) 432-0018
Email: [email protected]

Oil & Gas Appraisal

Oil & Gas Appraisal

It is not often that we do an oil & gas appraisal, but when we do, we work with one of the many skilled Certified Minerals Appraisers (CMA) within the International Institute of Minerals Appraisers (IIMA). Mr. Groff is also a CMA, and all appraisals comply with the Uniform Standards of Professional Appraisal Practice (USPAP). This appraisal was performed on a small oil and gas property which needed to be appraised for estate settlement purposes. Working with an expert associate, Groff completed the appraisal with the highest standard of care.

Mr. Groff is also a Competent/Qualified person for reserves reporting and mineral valuation. He is competent in limestone, dolomite, sand & gravel, coal, salt, and many other industrial minerals. He has personally viewed more than 120 mineral properties in his career. Call today to learn if we can help you on your mineral valuation needs.

Project Details

Client: Collins Scanlon LLP
Date: 2017

Contact Us

Address: 31 S Maysville Rd.,
Mt. Sterling, KY 40353 USA
Phone: (859) 432-0018
Email: [email protected]

Stockpile and Quarry Surveying

Stockpile and Quarry Surveying

Groff Engineering has FAA licensed Part 107 sUAS pilots that can safely and legally fly drones to survey quarries and stockpiles. Its pilots and engineers routinely produce datasets that meet ASPRS positional accuracy standards for 3 cm or less horizontal and vertical RMSE. Groff Engineers use GNSS receivers to place targets and check points, and all datasets can be tested to verify accuracy per ASPRS requirements, if the client so chooses.

Are you checking your datasets today? We have found that most operators do not check, and they rely upon the ground control targets as their only test of accuracy. This is fine, but we have a problem with giving the photogrammetry software the answers to the test. Our engineers use several independent check points to verify a dataset’s accuracy.

Project Details

Client: Hilltop Companies
Date: 2017

Contact Us

Address: 31 S Maysville Rd.,
Mt. Sterling, KY 40353 USA
Phone: (859) 432-0018
Email: [email protected]

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