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
Kairos Receives $10M, Mt York Cash Hits $35M
Company cash hits $35M, accelerating Mt York Gold Project and 2026 plans.
RESOURCE STOCKS
Sharper Grades Confirm Mangaroon's Corridor of Opportunity
One-metre resampling and the Minga Bar shear highlight Mangaroon’s next drill targets
RESOURCE STOCKS
Excelsior Project Shows Major Gold Potential
Mammoth Minerals advances exploration in Nevada’s high-potential gold belt.
RESOURCE STOCKS
Dreadnought's Illaara Shift: High-Grade Upside
DRE extends Illaara lodes with high-grade results, improving project confidence and
Investor Sentiment Insights 2026
Discover what investors have planned for mining in 2026 in our industry-leading survey
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.
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