US Rare Earth Minerals Inc And The Supply Chain
- 01. What Is US Rare Earth Minerals Inc?
- 02. US Rare Earth Minerals Inc vs. USA Rare Earth (Nasdaq: USAR)
- 03. Why Rare Earth Minerals Matter for STEM Electronics & Robotics
- 04. US Rare Earth Supply Chain and Geopolitical Context
- 05. Major Shareholders and Financial Context
- 06. Key Takeaways for STEM Educators
What Is US Rare Earth Minerals Inc?
US Rare Earth Minerals Inc (ticker: USMN) is a Nevada-based mining company founded in 2008 that extracts and distributes Calcium Montmorillonite under the Excelerite brand name for agricultural, animal, and human uses, not rare-earth elements for electronics. Despite its name, the company does not produce neodymium, dysprosium, or other rare-earth elements (REEs) used in Arduino motors and robotics; instead, it focuses on mineral deposits in Panaca, Nevada, with a web-based and distributor-based sales program.
US Rare Earth Minerals Inc vs. USA Rare Earth (Nasdaq: USAR)
Students and educators often confuse US Rare Earth Minerals Inc with USA Rare Earth (Nasdaq: USAR), a different company developing the Round Top project in Texas to produce rare-earth elements for permanent magnets used in electric vehicles, defense systems, and robotics. USA Rare Earth targets commercial production by late 2028 and specializes in heavy rare-earth elements making up 70% of its REE production.
| Attribute | US Rare Earth Minerals Inc (USMN) | USA Rare Earth (USAR) |
|---|---|---|
| Headquarters | Panaca, Nevada | Stillwater, Oklahoma |
| Founded | 2008 | 2017 |
| Primary Product | Calcium Montmorillonite (Excelerite) | Rare-earth elements (neodymium, dysprosium) |
| Stock Exchange | OTC (USMN) | Nasdaq (USAR) |
| Robotics/Electronics Use | No direct application | Permanent magnets for motors |
| First Production Target | N/A (operational since 2011) | Late 2028 |
Why Rare Earth Minerals Matter for STEM Electronics & Robotics
Rare-earth elements like neodymium and dysprosium are critical for high-performance permanent magnets used in servo motors, DC motors, and sensors in Arduino and ESP32 robotics projects. These magnets enable precise motion control in obstacle-avoiding robots, robotic arms, and automated garden systems that students build in STEM classrooms.
- Neodymium (Nd) magnets provide the strongest magnetic field per volume, essential for compact robot motors
- Dysprosium (Dy) improves magnet performance at high temperatures, critical for sustained motor operation
- Praseodymium (Pr) is often alloyed with neodymium for enhanced coercivity in motor applications
- Global REE mine production reached 390,000 tons REO equivalent in 2024, with China dominating supply
- US domestic production was approximately 45,000 tons REO in mineral concentrates in 2024
- Connect servo motor signal wire to Arduino pin 2 (using male-to-male jumpers)
- Connect servo VCC to 5V power and GND to ground on breadboard
- Attach neodymium magnets (8 x 3mm) to moving components as shown in magnetic motion projects
- Upload Arduino sketch using Servo.h library to control angular positions
- Test motion by adjusting delay values (delaymotor: 15ms, delaymotion: 250ms)
US Rare Earth Supply Chain and Geopolitical Context
US Rare Earth Minerals Inc's business activities are crucial as these minerals are integral components in manufacturing electronics, renewable energy technologies, aerospace applications, and national defense solutions. The company's primary objective is to become a leading domestic supplier, contributing to reducing dependency on foreign sources given geopolitical tensions around global REE supply.
BMW and Yamaha Motor invested $43 million in Series B funding for Phoenix Tailings, a US-based rare earths processing startup, to enhance production outside China. USA Rare Earth brought forward commercial production plans by two years, targeting late 2028 first production from its Round Top project.
| STEM Project | Rare Earth Component | Learning Outcome | Grade Level |
|---|---|---|---|
| Magnetic Motion Machine | 8 x neodymium magnets (3mm) | PWM control, magnetic force | 10-14 |
| Obstacle-Avoiding Robot | Neodymium motor magnets | Sensor integration, autonomy | 12-16 |
| Automated Garden System | Servo motor magnets | IoT, data collection | 13-17 |
| Electromagnetic Lock | Electromagnet coil | Electromagnetism fundamentals | 11-15 |
Major Shareholders and Financial Context
Black Diamond Financial Group LLC holds 15.92% of US Rare Earth Minerals Inc (14,027,606 shares valued at $2M), while David Platt owns 13.72% (3,975,558 shares). Ola Soderquist holds 9.668% and Michael Sheikh holds 5.574% of the company.
The company changed its name from U.S. Natural Nutrients and Minerals, Inc. to U.S. Rare Earth Minerals, Inc. in May 2011, which explains confusion about its actual product line.
Key Takeaways for STEM Educators
Understanding the difference between US Rare Earth Minerals Inc and actual rare-earth producers helps students grasp supply chain complexity in electronics manufacturing. Educators should emphasize that neodymium magnets in their robotics kits come from companies like USA Rare Earth, not USMN.
- US Rare Earth Minerals Inc produces Calcium Montmorillonite for agriculture, not REEs for electronics
- USA Rare Earth (USAR) develops Texas-based REE production for magnets in robotics
- Neodymium magnets enable precise servo motor control in Arduino projects
- US domestic REE production was 45,000 tons REO in 2024
- Global REE market projected to reach $9.2B by 2030 with 311K tons volume
For hands-on learning, Thestempedia.com provides step-by-step Arduino robotics builds that demonstrate these engineering fundamentals including Ohm's Law, circuit design, and sensor integration using ESP32 microcontrollers.
What are the most common questions about Us Rare Earth Minerals Inc And The Supply Chain?
How Do Rare Earth Magnets Work in Arduino Robotics?
Neodymium magnets create strong magnetic fields that interact with motor windings to generate rotational torque through electromagnetic induction, following Lorentz force principles where F = q(v x B). In Arduino servo motors, these magnets enable precise angular positioning (0-180°) controlled by PWM signals sent from microcontroller pins.
What Are Rare Earth Elements Used For in Electronics?
Rare earth elements power critical components in electronics including smartphone振动 motors, hard disk drive actuators, earbud speakers, and robotics sensors that students encounter in STEM projects. Neodymium magnets enable miniaturization of motors while maintaining high torque-to-weight ratios essential for portable robotics.
Why Is the US Building Domestic Rare Earth Supply?
The US is developing domestic supply chains to reduce reliance on China, which controls approximately 85% of global rare earth processing capacity. President Trump's strategies impact the critical minerals sector by boosting North American production capabilities and strengthening supply chain security.
How Can Students Learn About Rare Earths Through STEM Projects?
Students can build magnetic motion machines using Arduino Nano, servomotors, and neodymium magnets to understand electromagnetic principles hands-on. Educators should integrate Arduino kits into STEM curricula by organizing components in accessible storage, establishing safety protocols, and creating makerspace atmospheres that encourage experimentation.
Are Rare Earth Prices Affecting STEM Education Budgets?
Rare earth metal imports surged to $1.6M in March 2023, impacting component costs for educational robotics kits. However, Arduino's affordability remains a significant advantage for educators, with basic components like resistors, sensors, and breadboards accessible through grants and donations.
