Construction materials management is an important element in the management of construction projects. One of the construction materials widely used in construction projects is concrete. Concrete being one of the important constituents of many of the construction projects, in addition to its subjectivity to variability, requires a close and thorough care and handling in construction projects. The constituents of concrete, which majority of them occur naturally, are subjected to a wide range of variability and quality problems. Therefore, with this respect a research was carried out to assess the situation of handling of concrete making materials in the Ethiopian construction industry with a special emphasis given to the concrete making aggregates. The findings of the research are presented in this book.