Home › USC › Title 30 › Chapter 1630 U.S.C. Chapter 16 — MINERAL DEVELOPMENT OF LANDS WITHDRAWN FOR POWER DEVELOPMENT§ 621— Entry to lands reserved for power development§ 622— Liability for damage, destruction, or loss of claim§ 623— Recording and reporting of unpatented claims; time§ 624— Protection of existing valid claims§ 625— Prohibition of unspecified use