Ana Cabral 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
ENERGY MINERALS
EPA proposes tougher emissions standards
Standards mean more metal demand sooner
13 April 2023
BASE METALS
Sigma grows Brazilian resource
Sigma increases mineral resource at Brazilian Grota do Cirilo lithium project by about 46%
24 June 2022
BASE METALS
Sigma soars as it releases Grota do Cirilo studies
Sigma's Brazilian Grota do Cirilo's NPV (8%) is $5.1b and IRR is 589% as stock soars to record high
30 May 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
RESOURCE STOCKS
Hot Ground, High Hopes: Gorilla Gold's Exploration Heats Up
Resource updates, metallurgical tests, and momentum building
PARTNER CONTENT
TPDC & Energetech-Tantel Sign MOU to Boost Tanzania's Energy Hub and Gas Economy Goals
The partnership aims to position Tanzania as a leading regional energy and gas development
RESOURCE STOCKS
Mt Malcolm Mines Strikes Gold at Golden Crown
High-grade intercepts, structural clarity, and the path toward a maiden resource
RESOURCE STOCKS
Golden Signals: Gorilla Mines Targets Growth at Mulwarrie
From first hits to future plans, what Gorilla Gold sees beneath Mulwarrie
Mining Journal Intelligence’s Project Pipeline Index 2025
View our 50 top mining projects, handpicked using a unique, objective selection process from an expanded database of 600+ global assets.
Mining Journal Intelligence: Investor Sentiment Report 2025
Exclusive insights into the plans, priorities and preferences of 130+ mining investors and top factors influencing investment decisions in 2025.
Mining Journal Intelligence World Risk Report 2024 (feat. MineHutte ratings)
A detailed analysis of mining investment risks across 117 jurisdictions globally, assessed across six risk categories and an industrywide survey.
ESG Mining Company Index: Benchmarking the Future of Sustainable Mining
The ESG Mining Company Index report provides an in-depth evaluation of ESG performance of 61 of the world's largest mining companies. Using a robust framework, it assesses each company across 9 meticulously weighted indicators within 6 essential pillars.
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