Calvyn Gardner
REGULATION
Former Sigma co-CEO fired for trading shares during blackout
The miner didn’t specify the reason for Calvyn Gardner’s departure in January
24 November 2023
BASE METALS
Sigma grows Brazilian resource
Sigma increases mineral resource at Brazilian Grota do Cirilo lithium project by about 46%
24 June 2022
FROM THE CAPITAL
Sigma lithium puts ESG ahead of money
Focus on the E may have come at the expense of the G
17 June 2021
ENERGY MINERALS
Sigma reports FS for Xuxa
Xuxa to produce 220,000tpy of lithium concentrate
01 October 2019
RESOURCE STOCKS
Dreadnought's Illaara Shift: High-Grade Upside
DRE extends Illaara lodes with high-grade results, improving project confidence and
RESOURCE STOCKS
Burbanks Drilling Unlocks Gold Value
Drilling success at Burbanks advances Horizon Minerals’ gold growth plan
RESOURCE STOCKS
LinQ Minerals: A$15.4M Fuels Gilmore
Strong institutional support accelerates exploration and drilling at the Gilmore
RESOURCE STOCKS
High-Grade Hits Drive Gorilla Gold Growth
Drilling at Mulwarrie and Comet Vale Sets Stage for 2026 Resource Upgrade
World Risk Insights 2025 (feat. MineHutte ratings)
A detailed analysis of mining investment risks across 120 jurisdictions globally, assessed across six risk categories and an industrywide survey.
ESG Index 2025: Benchmarking the Future of Sustainable Mining
The ESG Index provides an in-depth evaluation of the ESG performance of 60+ of the world’s largest mining companies. It assesses companies across 10 weighted indicators within 6 essential ESG pillars.
Leadership Insights 2025
Leadership Insights reveals key trends in priority mining issues through interviews with 15+ top mining company executives and an industrywide survey.
Mining IQ Risk Analytics
Risk Analytics offers interactive access to World Risk Insight data, allowing you to customise risk views, benchmark jurisdictions, explore data behind scores and read expert commentary to guide your decision-making.
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