The U.S. Geological Survey (USGS) is seeking quotations for the purchase of a handheld gamma-ray spectrometer, which is essential for accurately measuring natural radioactivity during fieldwork. The device will facilitate the correlation of surface observations with subsurface geological data, highlighting its importance in geological studies. Key specifications for the spectrometer include ruggedness for field use, high sensitivity, Bluetooth and USB connectivity, and long battery life. Interested vendors should note that the performance timeline spans from September 20, 2024, to December 27, 2024, with delivery required by September 18, 2024. For further inquiries, potential contractors can contact Cheryl Theeke at ctheeke@usgs.gov or by phone at 303-236-9329.