Minerals Management Service (MMS), a bureau in the United StateS Department of the Interior, is a full-service resource management agency. The agency manages the nation's natural gas, oil and other mineral resources on Outer Continental Shelf (OCS). It collects and accounts for revenue from on-shore mineral leases on the federal land. The agency operates an off-shore energy and minerals management program. Minerals Management Service also administers a minerals revenue management program. It provides information on federal and public land and lots. In addition, the agency offers online information on a variety of environmental topics and issues. Minerals Management Service operates an environmental studies program.