In a January 12, 2012, “letter of interpretation” to former Congressman Jeff Landry of Louisiana, the agency stated: “Dear Congressman Landry: “Thank you for your August 1, 2011, letter on behalf of your constituents regarding Occupational Safety and Health Administration (OSHA) regulations related to Personal Protective Equipment (PPE) for welders, specifically for welding operations in the oil and gas drilling industry that would require wearing flame resistant clothing (FRC).