This is a weekly summary of selected prime contracts recently awarded by the federal government to companies and other vendors in Maryland.
* Vitro Corp. in Silver Spring, won a $5,303,959 contract from the Army to provide an exercise option for AWIS tech specialty services.
* Racal Communications Inc. in Rockville, won a $433,275 contract from the Army to provide communications equipment.
Hughes STX Corp. in Lanham, won a $159,669 contract from NASA to provide X-ray astronomy research.
* Costabile Associates Inc. in Bethesda won a $78,544 contract from the National Library of Medicine to revise cataloging-in-publication records.
Applied Science Associates Inc. in Landover won a $760,974 contract from the U.S. Dept. of Labor to provide audiovisual production support services.
System Resources in Bethesda won a $91,619 contract from the Rock Island Arsenal to maintain magnetic tape drives/controllers. System Resources also won a $730,443 contract from the Rock Island Arsenal to provide monthly maintenance for large scale computers.
Digital Equipment Corp. in Lanham won a $12,506,616 contract from the Department of Veterans Affairs to provide decentralized hospital computer program maintenance services for PDP-11 systems. Digital also won a $783,370 contract from the Coastal Systems Station to provide scientific computers and maintenance.
* Southern Management in Silver Spring won a $139,749 contract from the U.S. General Services Administration to provide 5,590 net usable square feet of office space located at 1101 King St., Alexandria, Va.