CME’s history is intimately linked to that of its founder, Gerard Ostorero, who presided the company since its inception in 1991 until 2001, year of his death. Field’s man, daring and tenacious, he worked in various sectors of activity before the discovery of mining.

Operator in a tuff quarry in its early years, and then Manager of a large international company of fresh fish trade. Native of Savoy, he moved to Brazil in 1974. He specialized in transportation of public works materials, participated in the construction of the underground metro of Rio, and also the back filling activities of the barra area of Tijuca. By doing so, this activity will lead him North of Brazil where he finally started gold mining. At the end of 1980, after several successful experiences, he decided to continue this activity in French Guiana, frontier region of the Brazilian State of Amapa.

CME was made possible in 1991, after having obtained a license to do exploration works on the actual Esperance mine site. With the immense alluvial resource in place, it aloud the funding for the operations start-up of the primary mine Esperance.

In 1992, CME takes back the alluvial exploitation of the Saint-Elie mine before Guyanor gets a hold of the mining claims and started the Saint-Elie Mines Corporation. After a first phase of reconnaissance, exploration is launched and will last until 1998. In 2002, CME acquires the Saint-Elie Mines Corporation from Guyanor and starts planning mining operations. The production on this second mine is effective since 2005.