| http://www.w3.org/ns/prov#value | - The dark halo of soot that often hangs over construction projects around Boston could go the way of smoking in bars and unfiltered smokestacks if city officials take action on a proposed measure.For years, environmental groups have blamed the diesel fumes belched by bulldozers, cranes, and other construction equipment for contributing to the area???s high asthma rates and other airborne ailments.
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