This is a weekly summary of selected prime contracts recently awarded by the federal government to companies and other vendors in Maryland.
National defense contracts
Litton Systems Inc. in College Park won a $7,870,026 contract from the Navy to provide two AN/BLD-1 systems for the SSN-22.
Dynamac Corp. in Rockville won a $777,760 contract from the National Library of Medicine for a hazardous substances data bank.
National Association of Social Workers in Silver Spring won a $499,785 contract from the National Institute on Alcohol Abuse and Alcoholism to provide research and development.