1. Minerals Yearbook: Cement 2012;van Oss,2015
2. Energy Technology Transitions for Industry;IEA,2009
3. T.D. Kelly, G.R. Matos, Historical statistics for mineral and material commodities in the United States (2016 version), 2016. https://minerals.usgs.gov/minerals/pus/historical-statistics/ [accessed 2017 August 10].
4. Mineral Commodity Summaries: Cement;van Oss,2017
5. Readily implementable techniques can cut annual CO2 emissions from the production of concrete by over 20%;Miller;Environ. Res. Lett.,2016