Committee advances changes to limited mining operations, raises bonding for new sites

The Minerals, Business & Economic Development Committee on a voice and roll-call sequence advanced House Bill 10, a package of changes to the state's limited mining operation (LMO) framework, and approved a technical amendment to add limestone to a list of covered minerals. Lawmakers also discussed House Bill 15, a pared‑down bill that would make only bonding changes; that bill was left without a motion and was not advanced.

Supporters said the bill updates bonding to reflect inflation and streamlines regulatory categories; opponents warned that expanding LMO eligibility to additional hard‑rock minerals could reduce public review and risk impacts to groundwater and neighboring wells.

Why it matters: House Bill 10 would broaden the types of minerals eligible for the LMO notification pathway, raise per‑acre bond levels for LMOs that commence after July 1, 2025, and remove the separate small mine permit category going forward. The legislation alters timelines for state review and for operators to post additional bonds, and codifies a number of existing Land Quality Division (LQD) practices in statute. Proponents said those changes would make oversight more efficient and help new mineral development move forward; critics said the expansion reduces opportunities for public input and called for stronger baseline groundwater testing near some operations.

What the bill does: According to testimony from Todd Parfit, Director of the Wyoming Department of Environmental Quality (DEQ), House Bill 10 "expands the applicability of limited mine operations to include all non coal minerals" (with an exception for uranium and thorium regulated under the NRC agreement‑state program), raises per‑acre bond levels for LMOs starting after July 1, 2025, and removes the small mine permit category for future operations. Brandy O'Brien, LQD administrator, provided a…