Search U.S. government technical reports digitized or harvested by TRAIL.
Stream measurement in relation to mine drainage
Iron-Ore (Hematite) Mining Practice in the Birmingham District, Alabama
Strength of ore and top rock in the red iron-ore mines of the Birmingham district, Ala.
Subsidence and Ground Movement in the Copper and Iron Mines of the Upper Peninsula, Michigan
Essential factors influencing subsidence and ground movement