These briefings, given semiannually to representatives of the Corps of Engineers and other Federal agencies, are one phase of the Dredge Material Research Program (DMRP) information dissemination and aid in coordinating activities among the agencies. The briefing summarizes the operation, organization, management, and funding of the DMRP and highlights the issues of dredging and disposal. Research problems, accomplishments, and objectives are discussed in relation to work units within the four projects that structure the DMRP: the Aquatic Disposal Project, the Habitat Development Project, the Disposal Operations Project, and the Productive Uses Project. In February 1975, the DMRP was 40 percent complete with 37 work units finished and 56 active. The work unit studies, are conducted in laboratory and field investigations under contract with universities, corporations, and Government agencies throughout the United States. The appendixes include a listing and status summary of work units and their contractors as of January 1975, and a listing of reports published by the DMRP as of February 1975.