US HB6674

Replaces the flat $100 hardrock mining claim maintenance fee with a tiered system based on proximity to national parks and monuments: $1,100 for claims within covered areas, $1,000 for 0-10 miles away, $700 for 10-20 miles, $500 for 20-30 miles, and $300 for claims more than 30 miles away

Exempts "small miners" from maintenance fees and assessment work requirements if they hold 10 or fewer claims covering no more than 200 acres, earn less than $50,000 annually from mineral production, and use claims only for casual (non-mechanized) activities

Requires the Secretary of the Interior to adjust fees for inflation at least every 5 years based on the Consumer Price Index

Directs excess fee revenue beyond administrative costs to be distributed: 40% to abandoned mine land reclamation, 20% to Tribal Historic Preservation Program, 20% to states proportionally based on mining claims, 10% to Land and Water Conservation Fund, and 10% to National Parks and Public Land Legacy Restoration Fund

Defines "hardrock minerals" as locatable minerals not covered by mineral leasing acts, and excludes minerals held in trust for or owned by Indians and Indian Tribes