The Heart Mountain Relocation Center National Historic Landmark is on BLM-administered mineral estate with BLM-administered surface in view of the site. Impacts to the National Historic Landmark principally result from activities that affect the site’s historical setting (i.e., viewshed). Under all the alternatives, the 72-acre National Historic Landmark would be withdrawn from appropriations under the mining laws and protected from direct impacts from surface-disturbing activity associated with mineral development. The greatest adverse impacts to the National Historic Landmark would occur under Alternative A, which applies the fewest restrictions on mineral development within the viewshed of the National Historic Landmark. Alternative B restricts surface-disturbing mineral development in the viewshed of the National Historic Landmark to the greatest degree, resulting in the greatest beneficial impacts under this alternative, followed by alternatives D, C, and A respectively.