Geology and exploration The cost of aggregate is not, in itself, a major factor in most applications, but its impact on the use of more expensive components, such as cement in concrete or bitumen in As stated in in the original Aggregate Handbook, leaders in the aggregates industry have recognized that a comprehensive, practical and professional publication was Home I Build AmericaOhio Finally, quality-related source properties, provisional testing methods, and restric tions put in place for u