The U.S. Department of Labor's Mine Safety and Health Administration intends to award a sole source contract to TSI Incorporated for Quest Edge 8M Noise Dosimeters and Microphones, which are the only products with MSHA approval for intrinsic safety in underground coal mines. This notice is for informational purposes only and is not a request for competitive proposals. Interested parties may submit a capability statement by 5:00 pm ET on Friday, 05/15/2026, to demonstrate their ability to provide these specific products. No budget amount or performance location is specified in the notice. The government will determine whether to compete the contract based solely on the responses received.