Bill > SB664

This bill modifies Oregon's mining regulations by clarifying the definition of "gravity separation mines" and expanding the understanding of gravity separation techniques. Specifically, the bill adds a new provision to state law that defines a gravity separation mine as any mine that exclusively uses gravity separation methods to separate metals from ore. The bill also updates the existing legal definition of "gravity separation" to now include two methods: (1) separating mineral particles using water or air based on differences in their specific gravities, and (2) separating mineral particles through froth flotation. This means that mines using techniques like water-based sorting or air classification, as well as froth flotation (a process where mineral particles are separated by creating a foam layer), can now be officially classified as gravity separation mines. The changes are part of Oregon's broader mining operation regulations found in ORS (Oregon Revised Statutes) sections related to mining permits and environmental evaluations, and appear intended to provide more precise terminology and classification for different types of mining extraction methods.

Agriculture and Natural Resources

https://olis.oregonlegislature.gov/liz/2025R1/Measures/Overview/SB664