Bundesanstalt für Geowissenschaften und Rohstoffe
Considering the growing importance of construction raw materials and industrial minerals in the economy, their environmental and social impacts, and their potential to contribute to local development and poverty reduction, the Bundesanstalt für Geowissenschaften und Rohstoffe (BGR) commissioned this study under the title ‘raw materials construct metropolises’. Its objectives are to gain a better understanding of the market barriers, opportunities, and potentials of locally produced construction raw materials in the metropolitan areas of New Delhi, India, and Surabaya, Indonesia. The focus lies on urban areas and their surroundings because construction raw materials are typically high volume and low value and therefore mostly extracted close to the locations of processing, manufacturing, and construction. The study aims at understanding and analysing the construction material value chains, including aspects such as current conditions and impacts of extraction and recycling, processing, and manufacturing as well as transport, and analysing obstacles and the potential for greater local value addition for local development, as well as the climate change impact of those value chains. The focus of the study lies on sand and gravel, crushed rock , dimension stone, slate, carbonate rocks, gypsum and anhydrite, clays, lightweight aggregates, silica raw materials, glass, and cement.
The preliminary report, which the final report will build on, is based on desk-based research and remote interviews. It uses statistical data, secondary literature, and existing reports to build a basic understanding of the construction raw material value chains in India and Indonesia, with a specific focus on New Delhi and Surabaya.