ABSTRACT
79Heterogeneity is a primary structural property of all materials and we cannot ignore it without taking considerable risks that are almost always economically detrimental to any research performed on these materials. There are many examples in various industries using materials of mineral origin such as metallurgy, cements, coal, glass, ceramics, nuclear energy, and so on. There are other examples such as agricultural, food, paper, chemical, and pharmaceutical industries that use mineral, organic, vegetal, and synthetic materials. Without exception, all these industries, and the research programs associated with them, should be affected and extremely concerned by the notion of heterogeneity,
