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Contributions to Senators Authoring Letter

Ameren Corporation $2,000
American Chemistry Council $8,000
American Fuel & Petrochemical Manufacturers $1,000
American Iron and Steel Institute $1,000
American Petroleum Institute $2,666
American Road & Transportation Builders Association $4,500
American Trucking Association $12,500
Associated Builders and Contractors $7,000
Associated General Contractors of America $8,500
Association of Equipment Manufacturers $2,000
ConocoPhillips $2,200
Edison Electric Institute $6,000
Halliburton $9,500
Interstate Natural Gas Association of America $3,500
Murray Energy $25,150
National Association of Home Builders $7,000
National Automobile Dealers Association $9,000
National Federation of Independent Business $6,000
National Mining Association $2,500
National Ready Mixed Concrete Association $5,000
National Roofing Contractors Association $4,000
National Rural Electric Cooperative Association $7,000
National Stone, Sand and Gravel Association $6,500
Oldcastle Materials $2,000
Portland Cement Association $1,000
Sheet Metal and Air Conditioning Contractors National Association $5,000
Us Chamber Of Commerce $750
Methodology: MapLight analysis of campaign contributions to the candidate committees of senators authoring a letter to OSHA concerning a proposed rule about occupational exposure to respirable crystalline silica, from PACs and employees of organizations submitting comments opposing the rule, requesting substantive changes, or requesting an extension of comment period. Based on itemized records made electronically available by the FEC as of March 19, 2014.