The German experience in dealing with the health hazard of respirable dust in underground mines is reported from first-hand observation in this Bureau of Mines paper. The report covers--(1) the control of dust by water infusion, water spraying, and ventilation. (2) The sampling devices (tyndalloscope, konimeter, and bat-i) and methods used to determine the dust concentrations in mines. (3) The systems of classifying hazardous and safe dust levels in mines. (4) The research facilities devoted to theoretical and applied work on mine dust and pneumoconiotic disease. The major research projects on dust and disease now underway in West Germany are outlined in an appendix.