BLM Government Information About Running Claims and Much More of Interest About Gold

I stumbled on this link that has a lot of information that may be useful in the work of gold discovery.
BLM Products and Services for Mining Claims | BLM MLRS

https://mlrs.blm.gov/s/research-map#3,46.58036870539957,-98.99771017666741

Use the BLM search at the top of the page.