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Contributions to Senators Authoring Letter

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.