The Boulle Mining Group has an established record of discovering and developing high-grade, globally significant mineral resources projects throughout the world.

BMG knows first-hand that responsible exploration and development of mineral deposits improves the lives of the people. It benefits the countries where it operates by providing jobs, economic development and revenue for advancing the welfare of the general population. Successful mineral production is not enough. Mineral development is only truly successful when it benefits the people in the country in which it occurs.



America Mineral Fields Inc. (AMF) was a Toronto Stock Exchange company established by Mr Boulle in 1995. AMF acquired the world-class Kolwesi copper/cobalt tailings and Kipushi zinc deposits in the Democratic Republic of Congo. The Kolwezi deposit is purportedly the world’s third-largest cobalt resource with combined tailings reserves estimated at 112.8 million tonnes at an average grade of 0.32% cobalt and 1.49% copper. It has been projected to produce up to 42,000 tonnes of copper and 7,000 tonnes of cobalt per year. In 2006, AMF (renamed Adastra Minerals) merged with First Quantum Minerals, Ltd. in a transaction valued at approximately $275 million CDN (2006 CDN dollars).



Diamond Fields Resources, Inc. (DFR), the predecessor to Diamond Fields International Ltd. (DFI), was a Toronto Stock Exchange company founded by Jean Boulle in 1993. In 1994, DFR discovered one of the largest and richest nickel/cobalt deposits in the world at Voisey’s Bay, Canada. The deposit is considered one of the most substantial mineral discoveries in Canadian history, and Vale/Inco acquired it in 1996 for $4.3 billion. It is currently the world’s second-largest nickel producer.




Through Spirit Resources SARL, the Boulle Mining Group is the largest shareholder of Diamond Fields International, Ltd. (DFI), a TSX Ventures Exchange Company (TSXV:DFI) with exploration and mining experience in diamonds, gold, silver, zinc, copper, nickel and other metals. DFI has operations and/or interests in Namibia, Madagascar, and the Red Sea. DFI is the successor to DFR and is perhaps best known for its expertise in marine mining. DFR is one of only a handful of resource companies to extract mineral resources (diamonds) from the ocean successfully commercially.



Sierra Rutile Limited (formerly Titanium Resources Group) is a London Stock Exchange (AIM) company established by Jean Boulle in 2004, which, when it was listed, comprised Sierra Rutile Limited, its titanium subsidiary and Sierra Minerals Limited, its bauxite subsidiary. Iluka Resources acquired Sierra Rutile Limited in 2016 for A$375m. Sierra Rutile Limited owns and operates the Sierra Rutile titanium dioxide mine in Sierra Leone and directly employs approximately 1,000 people. With a license area covering 580 square kilometres, the mine contains one of the world’s largest and richest high-grade titanium dioxide resources, with measured, indicated and inferred resource base of 841 million tonnes grading an average 1.01% rutile. It is the world’s largest primary rutile mine. The company has constructed a self-sufficient mine which maintains its infrastructure and ancillary services, including power, water and sanitation, housing, roads, and port facilities. In 2013 Sierra Rutile was the world’s second-largest producer of high-grade rutile, accounting for approximately 23% of world production. The company also produces about 32,000 tonnes of ilmenite and approximately 12,000 tonnes of zircon per year.

Sierra Minerals Ltd. (SML) operates the Sierra Minerals bauxite mine in Sierra Leone. The mine covers a license area of approximately 321 square kilometres and produces approximately 1,200,000 tonnes of bauxite per year and employs around 350 people. In 2008, Sierra Minerals was acquired from the Jean Boulle Group by Vimetco NV., the 7th largest aluminum producer in the world.

Ranobe mining


Boulle Titanium, Ltd., a member of the Boulle Mining Group, was the largest shareholder of World Titanium Resources Limited, an Australian Stock Exchange company (ASX:WTR). World Titanium Resources Limited returned to private ownership in January 2017 when it voluntarily delisted from the ASX.

In December 2017 ASX-listed minerals sands miner Base Resources announced the acquisition of an 85% stake in the minerals sands project in Madagasar for US$75 million. This acquisition followed the finalisation of an agreement with World Titane Holdings whereby Base Resources would acquire an initial 85% interest in the wholly owned Mauritian subsidiaries of World Titane, which between them hold a 100% interest in the Toliara Sands project in Madagascar.

Tim Carstens, MD of Base Resources, comments: “World Titane (the successor to the formerly ASX-listed World Titanium Resources) has invested significantly in the progression of the Toliara Sands project over a number of years, establishing a world-class Mineral Resource, advancing development studies and securing key permits and licenses.”

“World Titane has also successfully fostered strong relationships with the government of Madagascar and the local community. The majority shareholders in World Titane, AMED Funds and Boulle Titanium, who have been instrumental in the recent project progression, have committed their ongoing support to the project to ensure a continued smooth progression to mine development.”

World Titane Holdings has a total exploration target of more than 4.7 billion tonnes in the Toliara Sands Exploration permits at Ranobe, Ankililoaka, Basibasy and Morombe, including the 707 million tonnes at 6.5% THM JORC Resource at Ranobe.

25B Boulevard Royal
L2449 Luxembourg
Grand Duchy Luxembourg

Tel: +352 222 512
Fax: +352 222 413

The Jean Boulle Group acquires promising assets and projects, then optimizes their structure, management and development with private and public investment.

The Jean Boulle Group has been a member of the US Corporate Council on Africa since the Council’s inception.


Something went wrong. Please check your entries and try again.

Copyright © 2019 Jean Boulle Group. All rights reserved.