The progressive integration, or attempted integration, of the private sector in the implementation of IEL [Intl. Environmental Law] through the concept of corporate accountability has come to represent one of the aspects of the continuous and constant process of evolution of international law in general, and of IEL in particular. [Refers to cases involving: Murphy Ores, Cambior, Union Carbide (now part of Dow), Texaco, Amion Metals, Freeport-McMoRan, Unocal (now part of Chevron), Southern Peru Copper, Rio Tinto, Royal Dutch Shell, Botnica, Ence, Compañía del Desarrollo de Santa Elena, Metalclad (part of Entrx)]