underground coal mine

argyro-siderosis atrophic follicle bat back and forth beef-brained coarseners copper-nickel alloys corrugated sheet-iron (undulated sheet-iron) DRQ fox wedges Frierfjord jumped into kashima odori (japan) magnetic circular dichroism monetary variable newbegin poyprene reginald carey harrisons Tantal tool alloy tombouctou (timbuktu) type of decomposition