US Nuclear Corp (OTC: UCLE) is a radiation detection and monitoring equipment company that designs, manufactures, and markets systems used to detect and identify radioactive material, contamination, biohazards, and nuclear material. Revenue is generated through transactional product sales of detection hardware across two operating divisions: Technical Associates and Overhoff Technology Corporation, both subsidiaries of Optron Scientific Company, Inc., which was incorporated in California in 1971 and serves as the primary operating entity. Products span hand-held portable air monitors, vehicle monitors, personnel monitors, port security scanners, and facility-wide environmental monitoring systems. End markets include nuclear power plants, airports, seaports, government buildings, hospitals, military, and emergency responder services. The company was incorporated in Delaware on February 14, 2012, and is led by Robert I. Goldstein, who serves as President, Chief Executive Officer, and Chairman. The filing, a 10-K filed June 25, 2025, discloses the company qualifies as a smaller reporting company with annual revenues below $100 million and a public float below $250 million.

Revenue model

Transactional product sales of radiation detection and monitoring hardware, including portable air monitors, stack monitors, port security scanners, and multi-detector systems, sold to nuclear power plants, government agencies, airports, seaports, hospitals, and military customers.

Products and services

Overhoff air monitors (hand-held portables, mid-to-large air and stack monitors using Dual Ion Chamber and Dual Proportional Detector technologies with Dow Chemical Nafion tubing for tritium detection); vehicle monitors; personnel monitors; exit monitors; room monitors; P-8Neon Quick-Scan X-ray detector; RAD-CANSCAN shipping container radiation mapping system; TBM-6SPE multi-detector system for Alpha, Beta, Gamma, and Neutron detection; Overhoff Overview centralized environmental monitoring software.

Customers and end markets

Nuclear power plants, airports, seaports (TSA and port security personnel), U.S. government agencies (including FDA-initiated design engagement post-9/11), military, emergency responders, hospitals, and government buildings. The company also targets replacement demand from existing users and competitors' customers upgrading air and stack monitors for tritium and C-14 detection.

Value-chain role

Vertically integrated designer and manufacturer of radiation detection hardware and software, selling directly to end-market operators rather than through a distribution intermediary.

Geographic exposure

United States, based on principal executive office address and primary customer references in the 10-K filed June 25, 2025. No specific international revenue breakdown disclosed in the excerpts.

Source: SEC 10-K, filed 2025-06-25

Industry: Measuring & Controlling Devices, NEC