Limestone Cited as Benefit to Green Concrete

By Mark S. Kuhar Adding limestone powder to “green” concrete mixtures – those containing substantial amounts of fly ash, a byproduct of coal-burning power plants – can significantly improve performance, according to researchers from the national Institute for Standards and technology (NIST) and the Federal Highway Administration (FHWA).

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EPA Launches Online Tool for EIS Access

The Environmental Protection Agency (EPA) launched an interactive web-based mapping tool that provides the public with access and information on Environmental Impact Statements (EIS) filed with EPA for major projects proposed on federal lands and other proposed federal actions.

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Lafarge’s Texada Quarry Expansion Meets Resistance

An intense debate about increasing coal exports to Asia from British Columbia focused on Texada Island recently. The Texada quarry, owned by Lafarge Canada Ltd., is the endpoint in a proposal that would see millions of tons of thermal coal from the United States exported through the province.

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MSHA Conducts Impact Inspection at Illinois Quarry

The U.S. Department of Labor’s Mine Safety and Health Administration (MSHA) announced that federal inspectors issued 149 citations and 16 orders during special impact inspections conducted at nine coal mines and four metal/nonmetal mines last month.

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