Booz, Allen & Hamilton Inc., a management and consulting firm headquartered in New York, has named Howard A. Blank and Alton L. Gowen vice presidents in the firm's communications division here.

Blank, previously president of Integrated Telecommunications Systems Inc., will manage Booz Allen's commercial telecommunications activities.

Gowen, a former vice president of systems and software development for Planning Research Corp. in McLean, will head its intelligence management practice.

In addition, the Bethesda-based division announced that senior vice president Eric R. Zausner has been named chairman of the Committee on Energy and Raw Materials of the Organization for Economic Cooperation and Development.

Microbiological Associates Inc. in Bethesda has appointed Louis T. Mulligan general manager of its newly restructured toxicology division. Mulligan was formerly president of Borriston Laboratories in Rockville.

Hazleton Laboratories Corp., a Vienna-based research firm, has promoted Roy M. Dagnall and David A. Valerio to vice presidents. Both Dagnall, general manager of the firm's Madison, Wisc., division, and Valerio, who heads the Hazleton Research Products subsidiary in Denver, Penn., will retain their current responsibilities.

Amy A. Titus and Kirstin J. Austin, two independent consultants, have formed Titus Austin Inc., a consulting firm in Northeast Washington that designs training and health programs. Titus will be president of the new firm and Austin will be vice president.

Woodward-Clyde Consultants, a geological engineering firm in Rockville, has announced several appointments, following an expansion in its operations.

Jerome J. Leskiewicz, formerly director of environmental construction for Montgomery County, has joined the firm as manager of environmental services; Robert A. Waitkus has been promoted to manager of geotechnical services, and Ronald E. Smith, vice president and office manager, will head the consulting firm's underground technology services.