About us

Who We Are

Acrux Gold is the parent company of SGZ Cononish Limited, Scotland’s only commercial gold and silver mine. We exist to make mining better: more efficient, more responsible, and more human. Our name comes from “Alpha Crux,” the guiding star – fitting for a company that aims to lead by example.

We drive sustainable value by incorporating people, capital, technology, and a strong culture. This is what makes us unique.

Our Purpose

To help mining operations thrive – by extracting more value with less waste, applying technology with care, and growing teams who lead with integrity and purpose.

The Acrux Compass

Our Values

Celebrate individual diversity:

We understand that each person brings unique perspectives and strengths. We value these differences and strive to create an inclusive workplace where all contributions are respected, and everyone brings their best self to work.

Teamwork:

We succeed together. Collaboration, mutual accountability, and shared ownership are essential to delivering results and maintaining operational discipline.

Honesty & Integrity:

We are courageous with the truth. We act with transparency and competence, ensuring our work meets the highest standards.

Listen:

We create space for dialogue, feedback, and ideas. Listening strengthens trust, uncovers problems early, and drives innovation and performance.

Strive for Excellence:

We set ambitious goals and relentlessly pursue them. Excellence means doing things well, doing them safely, and doing them sustainably.

Have fun:

We take our work seriously, but not ourselves. We foster pride, celebrate wins, and create a workplace where people can thrive.

How We Work

We operate on principle, not just protocol. Our values are embedded in everything—from shift handovers to board decisions. This culture is our greatest strength. It creates a disciplined, high-performing, respectful workplace.

Our Approach

Opperational Excellence

We measure our success by how well we run, not just what we extract. Precision, consistency, and quality are the backbone of everything we do.

Innovation

  • Multi-sensor sorting improves efficiency and lowers environmental impact
  • 3D plant scanning ensures smarter, safer retrofits
  • Modular designs reduce cost, footprint, and complexity

Governance With Purpose

From underground operations to boardroom decisions, we follow one rule: do the right thing— every time. Our structure is flat, empowered,

Our Team

Leaders Who Walk the Talk

At Acrux Gold, we believe that strong operations begin with strong people. Our leadership team brings deep mining expertise, hands-on operational experience, and a shared belief that values and performance go hand in hand. From the boardroom to the blast site, we lead by example—openly, decisively, and collaboratively.

Executive Leadership

Sean Browne

Chief Executive Officer

Sean brings strategic direction and stakeholder alignment to Acrux Gold. With a deep commitment to building transparent, high-performing organisations, he champions the culture and values that define our brand.

Karel Potgieter

Chief Operating Officer

Karel drives operational discipline and execution excellence across all business units. Known for building empowered teams and improving performance through structure, trust, and clarity.

Board of Directors

Moss, an Economist by training, served as an economic advisor in the South African Presidency from 1995 to 2000. He consulted to the World Bank and National Housing Forum (South Africa) on aspects of economic policy in South Africa. He is a CEO, Deputy Chairman, and co-founder of Safika Holdings – an Investment Holding company with a broad range of interests including but not limited to mining, engineering, financial services, property and technology sectors. He is a director of Sephaku Holdings Ltd (a JSE-listed company focused on building and construction materials), Chairman of Acrux Sorting Technology (Pty) Ltd and SAB Zenzele, to mention but a few. He is also a Trustee of the Nelson Mandela Children’s Hospital.

Mr. Matt Regan serves as Chief Executive Officer and Board Member at Micreos Pharmaceuticals. Matt has 32+ years of Pharma, Med-Tech and Diagnostic experience spanning the entire value-chain from drug discovery and development to manufacturing to commercial leadership in large, global healthcare organizations and 24+ years working with US Pharmaceutical giants Abbott & AbbVie with 15+ years working with the immunology franchise HUMIRA. Matt has an Engineering Degree in Polymer Engineering & an Executive MBA.

Sean has 23 years of experience in the mining and commodities sector, ranging from investment banking experience, with a focus on commodity derivatives, FX and rates trading, global debt capital markets, and structured mining finance. Following his Investment Banking career, Sean founded Acrux Resources in 2013, a mining sector-focused business with subsidiaries focused on commodity trading, private equity, critical minerals financing, and mining processing technologies.

Geoff is an Executive Director at Acrux Resources with 25 years of experience in commodity markets, physical commodity trading, supply chain management, junior mining, and equity capital markets. Geoff brings a fundamental market understanding of commodities, which enables Acrux to have a flexible business model whereby payment can be in the product.

Karel has 17 years of experience in the mining industry. His operational expertise includes senior mine management positions in JSE- and AIM-listed mining companies. He was responsible for managing multi-disciplinary teams specifically focused on turning marginal mining assets around. Karel has extensive expertise in the gold sector. Specifically, Karel headed up the turn-around and optimization one of the world’s largest gold and antimony operations. This operation has multiple similarities to the Cononish Mine relating to narrow reef vein type mineralogy, use of trackless mining equipment and a flotation processing minerals extraction process. Furthermore, Karel has international experience across gold mines in Kenya and ultra deep mining operations in South Africa.

Reon Barnard is the CEO of Tabono and the Founder of Barrock, with 20+ years of expertise as a mining entrepreneur and in resources trading. His other key holdings include BCR and Jabali.

He holds a Tsinghua INSEAD Executive MBA and B Comm Finance from Stellenbosch.

Lelo is the Founder of Ata Capital, a private equity fund manager focused on non-traditional alternative strategies. He has 20 years’ of experience in investment banking and private equity. He is a director of Remgro Limited, SLG, Masana Petroleum Solutions, Rain Group Holdings, Acrux Resources, Ndalamo Resources and chairman of the Southern African Venture Capital and Private Equity Association (SAVCA).

Business Unit Leaders

Paul leads the underground and production teams with a sharp focus on safety, efficiency, and continuous improvement. His pragmatic leadership ensures decisions are grounded in data and experience.

Rachael heads up geology, exploration, and resource confidence. She’s responsible for the drilling program, grade control, and ensuring our resource models drive reliable mine plans.

Anton oversees all things plantrelated— from design and engineering upgrades to throughput, recovery, and metallurgical excellence.

John leads rehabilitation, infrastructure clean-up, and surface operations. He’s also our environmental guardian, ensuring all work respects the unique setting we operate in.

Functional Support

Our technical, financial, and governance functions are supported by: