Your best bet would be to call the BLM office in St. George...They would be able to help you out. Good luck...
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2000 E-350, 7.3 Power Stroke Diesel. 4x4. Loaded. "The Big Gray Whale"
1982 Mercedes 300D. WVO, SVO and Biodiesel for the last 30,000 + miles. (my 600 mile a week commuter).