Scrap Iron: Reported United States aggregated spot market prices per gross ton shown for each commodity are based on all Management Science Associates’ (MSA) Raw Material Data Aggregation Service (RMDAS) participants’ actual order data submitted to and processed by MSA as of the 20th of each respective “buy month,” rounded to the whole integer. A map of RMDAS regions is available at http://rmdas.msa.com, as is a further explanation of RMDAS methodology and an accompanying disclaimer.

No. 1 HMS defined as prepared obsolete scrap, 5 feet long and under. Additional pricing information on each grade can be found at www.RecyclingToday.com.

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Stone and Aggregate Pricing: *Index is based on 1982 average price as 100 Source: U.S. Bureau of Labor Statistics

Copper - LME Pricing: Source: London Metal Exchange, www.lme.com

Aluminum - LME Pricing: Source: London Metal Exchange, www.lme.com