CYR CONSTRUCCIONES Y REFRACTARIOS was initially focused for attending the new requirements of construction and refractory services, demanded by the installing of the then State´s Siderurgical Company (ENSIDESA). In 1989, with a 108 workers staff, CYR became a part of GRUPO MELCA and since then, CYR has diversified its business till constituting a Services Company with more than 500 workers.