US Critical Materials Highlights Receipt of USGS Data Flown by SGL

April 2026 - US Critical Materials Corp. plans to integrate helicopter-borne magnetic and radiometric data acquired and processed by SGL for USGS over parts of Idaho and Montana.

US Critical Materials Acknowledges Receipt of USGS Sheep Creek Geophysical Survey Technical Report

PR Newswire (prnewswire.com) US Critical Minerals Corp News Release, 9 April 2026

USGS Data Released for Area of Iowa, Nebraska, South Dakota and Minnesota

March 2026 - High resolution magnetic and radiometric survey data acquired by Sander Geophysics over the western Spirit Lake tectonic zone that covers parts of northwestern Iowa, northeastern Nebraska, southeastern South Dakota, and southwestern Minnesota are available for download.

Airborne magnetic and radiometric survey, western Spirit Lake tectonic zone region, Iowa, Nebraska, South Dakota, and Minnesota, 2023-2024

ScienceBase Catalog (sciencebase.gov), 16 March 2026

SGL Flying an Airborne Geophysical Survey in Guinea, West Africa

January 2026 - Sander Geophysics is pleased to have been selected to fly an airborne geophysical survey in the eastern part of Guinea. Guinea's Ministry of Mines and Geology hosted the official ceremony in Conakry, which launched the World Bank-supported geoscience program.

Lancement des travaux de géosciences : un pas décisif vers la souveraineté minière et la prévention des risques

Guinee360 (guinee360.com), 14 January 2026

SGL Flying a Big Fixed Wing Survey over Maine, USA

November 2025 - Sander Geophysics is very pleased to have been selected to fly a large magnetic and radiometric fixed wing survey over eastern Maine. This survey is a initiative of the USGS Earth Mapping Resource Initiative (Earth MRI). Mobilization is underway and survey flying will begin shortly.

Media Alert: Low-Level flights to image geology over eastern Maine

USGS (usgs.gov), 13 November 2025

Geological Survey plans Maine survey for 'critical minerals'

National Fisherman (nationalfisherman.com), 6 November 2025

SGL Flying a Large Fixed Wing Survey over Georgia, USA

September 2025 - Sander Geophysics is pleased to have been selected to fly a large magnetic and radiometric fixed wing survey over western Georgia. This survey is a collaboration between the USGS Earth Mapping Resource Initiative (Earth MRI) and the Association of American State Geologists.

Media Alert: Low-level flights to image geology over Western Georgia

USGS (usgs.gov), 15 August 2025