When citing a government document on your MLA Works Cited page, if there is no author listed, the government organization should be listed as the author. The number of containers needed to document government publications will depend upon how you accessed the publication. For example, if you accessed the publication directly from the web, just one container is needed. If you accessed the publication via a database, two containers are needed.
Instituto Nacional de Seguridad y Salud Laboral (NIOSH). "Especificaciones para los exámenes médicos de los mineros de carbón subterráneos: Proposed Rule". Centros para el Control y la Prevención de Enfermedades, Departamento de Salud y Servicios Humanos de los Estados Unidos, 9 de enero de 2012, www.cdc.gov/niosh/docket/archive/docket225.html.