The health program of the Federal Coal Mine Health and Safety Act of 1969 is discussed. This report is a compendium of the Department's activities regarding the health matters covered by the Act. It also includes the research and implementation activities performed under Government contracts and grants which were the responsibility of BOSH (Bureau of Occupational Safety and Health). These extramural activities are described under applicable topics throughout the report. A brief legislative history of PL 91-173 is covered in the first section. Medical examination of coal miners, physician training seminars, transfer of miners with coal workers' pneumoconiosis to less dusty areas, and autopsy program activities are highlighted in the second section of this report. The third section deals with the applied medical research program activities under the Act. The following sections review the BOSH research programs for health standards setting and criteria development. This includes: mandatory health standards and interim standard reduction schedule; dust sampling--both instrumentation and methodology development; respirable dust exposure standards; respiratory protective devices; emergency medical assistance, potable water, and sanitation; noise standards; and a brief summary of the health related activities of the Interim Compliance Panel. The final section of the report summarizes the health program costs and projections, including estimated funding requirements through Fiscal Year 1972. Appendices, based on work accomplished during calendar year 1970, include: bibliography of all publications resulting from the current research activities within BOSH on medical and industrial hygiene research related to the occupational diseases of miners; a list of all contracts, grants, and PL-480 research agreements as of December 31, 1970; published rule making; and published proposed mandatory health standards.