🧭 A Brief History of the JORC Code
- mark
- Dec 17, 2024
- 3 min read
Updated: May 19
⏱️ Estimated reading time: 3–4 minutes
✨ When Gold Glittered… but Lied

In the mid-1990s, the world witnessed one of the most notorious mining scandals in history. The Canadian company Bre-X Minerals claimed to have discovered a massive gold deposit in Busang, Indonesia — a find that would be worth billions. But there was just one problem: it wasn’t real.
Samples had been salted with gold dust, inflating assay results and duping investors, analysts, and even governments. The scandal eventually unraveled, leading to the collapse of Bre-X, the mysterious death of one of its key geologists, and the loss of billions in shareholder value.
The story was so dramatic that Hollywood couldn’t resist: the 2016 film Gold, starring Matthew McConaughey, drew direct inspiration from these events — a cautionary tale of ambition, deception, and the lack of proper standards.
🛠️ Why the JORC Code Was Needed
Long before Bre-X shook the industry, there was already concern about inconsistent and overly optimistic mineral resource reporting. In the absence of clear guidelines, investors were left guessing — or worse, misled.
To address this, the Australasian Joint Ore Reserves Committee (JORC) was formed in 1971 by:
The Australasian Institute of Mining and Metallurgy (AusIMM)
The Australian Institute of Geoscientists (AIG)
The Minerals Council of Australia (MCA)
Their goal? Create a transparent, consistent, and accountable framework for reporting mineral resources and reserves — one that would protect both investors and the integrity of the industry.

📘 The First JORC Code (1989)
In 1989, the first official version of the JORC Code was published. It introduced fundamental principles still used today, including:
Measured, Indicated, and Inferred Resources
Proved and Probable Reserves
The role of a "Competent Person" — a qualified expert responsible for the credibility of public reports
It wasn’t just a technical manual. It was a shield against misinformation — a lesson reinforced just a few years later by the Bre-X disaster.
🔄 Key Milestones in JORC’s Evolution
JORC didn’t stand still. It evolved with the times:
1992: Updates to align with global best practices
1999: Greater emphasis on transparency for public reporting
2004: Harmonization with the CRIRSCO Template, promoting international standardization
2012: Integration of social, environmental, and economic considerations — a nod to the rise of sustainable mining
🌍 Global Impact: JORC Beyond Australia
The JORC Code didn’t just change the game in Australasia — it became the blueprint for global mineral reporting. It directly inspired:
Canada’s NI 43-101
South Africa’s SAMREC Code
The UN Framework Classification for Resources (UNFC)
Today, these systems form the backbone of responsible, transparent mining disclosure worldwide.
⚖️ The JORC Code Today: Still Holding the Line
Even in the age of AI and ESG, the JORC Code’s core values — transparency, competence, and accountability — remain vital.
With increasing scrutiny on environmental and social impacts, the mining sector can’t afford a return to the opaque practices of the past. The JORC Code offers not just structure, but credibility.
🔮 Looking Forward
Some professionals are advocating for the next Code revision to cover topics such as:
Integrating ESG (Environmental, Social, Governance) reporting
Incorporating new tools like AI and machine learning for resource modelling
Achieving closer alignment with global sustainability frameworks
Whether these points will make it into the final update remains uncertain, but JORC’s mission stays the same: safeguarding trust in an industry where trust is everything.
🗨️ What’s your experience with the JORC Code? Have you ever seen the consequences of bad reporting firsthand? Let us know in the comments.
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