Tailings & Heap Leach Design Experts

Mining Expertise, Amplified.

BBA Consultants joins forces with Tierra Group to bring global engineering scale and trusted local expertise to U.S. mining.

“Our Clients are First,
the Team is Second,
and I am Third.”

Core Services

Water Resources

"Knight Piesold has been assisted by Tierra Group on a few key assignments and found the people and overall experience to be excellent."

Tom Kerr, President, Knight Piesold and Co.

"By providing excellent service during design, construction, expansion, and operations Tierra Group International has become an integral part of our La Libertad tailings storage team. Their ability to provide professional field and office engineering as well as on-site training makes Tierra Group International our primary resource for geotechnical and tailings projects."

Peter Montano, Manager, Mine Engineering, B2Gold Corp.

"With the complex tailings storage system at our El Limón mine we needed a flexible and creative team to help us build a new facility and maintain our existing facilities. Tierra Group's depth and breadth of ability and experience has been called upon many times over the past three years and they continue to provide us with site-specific solutions."

Peter Montano, Manager, Mine Engineering, B2Gold Corp.

"Julio, good evening ... I just wanted to write you about the course ... very good ... we were satisfied ... .very good teaching team that you have...”

Ronald Callo, Geotechnical Department Project Lead, Southern Peru Copper

“…firstly I want to tell you that it was a pleasurable experience for us to have Tierra Group involved in our Phase III Facility; initially preforming a peer review of the phase III design and later the QA/QC of its construction. Having said that it is my opinion that we would like to continue our relationship with Tierra Group going forward."

Rick Irvine, Gold Resource Corporation

"Your team has done an exceptional job here at Fekola. Thank you for their diligence and hard work."

Bora Gurcay, Deputy Civil Projects Manager, B2Gold

"Although I am relatively new to the Tierra Group Team, I am still deeply humbled to be able to say that I am part of such an amazing Team! Every single day I see how our credo is deeply ingrained in everything that we do, and propels us to the next level."

Bob Beach, Tierra Group International, Ltd.

“Tierra Group’s Team has provided Nyrstar with geotechnical and environmental engineering services to a large majority of our mining operations. Primarily focused on practical tailings impoundment solutions, and has been a dedicated engineering partner to Nyrstar.”

Rod Lamond, Group General Manager - Exploration and Mining Development, Nyrstar

“...our long association has been because Tierra Group has consistently offered superior value, at a fair price that you have personally backed up with often creative, out of the box solutions. And this in an area of our industry - basically waste disposal - that isn't at all sexy, but has absolutely no room for failure.”

Robert Byrd, Santacruz Silver

"...the kindness, love and grace Tierra Group shows to others (especially its clients...) is rare...Tierra Group is gold..."

Reneé A. Carmody, Lewis Roca Rothgerber LLP

Tierra Group is the consultancy of choice for the top talent in the mining industry.

Latest News

October 23, 2025
Tierra Group/BBA Consultants is excited to announce that Jacob Lopez has passed the Principles and Practice of Engineering exam!
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October 13, 2025
Tierra Group/BBA Consultants is excited to announce that Shyanne Wilson has passed the Fundamentals of Engineering exam!
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Team

MEET THE TEAM

Featured Teammate

Shyanne Wilson
Ms. Wilson is a Geological Engineer with over 2 years of experience in construction quality…...
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