Is this the type of industry you want in our community?
What we hear from the cement industry PR spokespeople may not include 
what they discuss in their own trade journal...
From Cement Americas - the Industry Publication for the Cement Industry.
"Increased cement production can result in higher levels of persistent organic pollutants (POPs) and persistent bio-accumulative toxic chemicals (PBTs), the undesirable byproducts of the combustion process. Regardless of industry's technical or production-related improvements in lowering POP and PBT emissions, regulatory authorities worldwide are attempting to virtually eliminate the generation of POPs and PBTs due to their affinity to accumulate in fat and move up the food chain.
According to U.S. Environmental Protection Agency (EPA), POPs are recognized as a special problem because they "persist in the environment, accumulate in the fatty tissues of most living organisms, and are alleged to be toxic to humans and wildlife, even at extremely low levels. POPs are prone to long-range transboundary atmospheric transport and deposition that cause significant adverse human health or environmental effects near to and distant from their sources.
The PBTs of interest to the cement industry include certain heavy metals (i.e., mercury and lead) and other chemicals that are formed during the combustion process."