FIRE ENGINEERING
250 Fifth Avenue New York, NY 10001 Tel. (212) 481-5771 Fax (212) 725-3654
EDITOR
Thomas F. Brennan
MANAGING EDITOR
William A. Manning
ASSISTANT EDITOR
Diane Feldman
CONTRIBUTING EDITORS
Gene Carlson Paul McFadden Frank L. Fire Vincent Dunn Roy Downey
CONSULTING EDITORS
Jack Bennett Francis L. Brannigan Hugh J. Caulfield Glenn P. Corbett Walt Hendrick Charles G. King Edward J. McDonald Burton W. Phelps
FEATURE DESIGN
Steve Hetzel
ILLUSTRATION
Arthur Anas
PUBLISHER
Henry H. Dinneen
DIRECTOR OF BOOK PUBLISHING
Daniel G. Smith
ADVERTISING COORDINATOR
Denise M. Kissock
PRODUCTION MANAGER
Mike Paxton, Tulso
CIRCULATION SEDVICES, TULSA
Larry Lofton Circulation Manager Patsy Russo Manager Paid Circulation
ADVERTISING SALES
NORTHEAST: Henry H. Dinneen, Publisher, 250 Fifth Ave., New York, NY 10001 Tel. (212) 481-5771, Fox (212) 725-3654
SOUTHEAST: Harry W. Dill, Regional Manager, 6406 Carmel Rd., Suite 308, P.O. Box 2347, Charlotte, NC 28226 Tel. (704) 542-8893, Fax (704) 542-7357
MIDWEST: Don Johnson, Al Gravenhorst, Gravenhorst & Assoc. Inc., 5901 N. Cicero Ave., Chicago, IL 60646 Tel. (312) 545-8621, Fox (312) 545-5138
WEST COAST AND SOUTHWEST: Karl Keeler, Western Manager, 915 Stewarton Woy, Glendale, CA 91207 Tel. (818) 500-0693, Fax (818) 548-9204
PENNWILL PUBLISHING COMPANY
P.O. Box 12601 Tulsa, OK 74101 (918) 835-3161
CHAIRMAN
Philip C. Louinger, Jr.
PRESIDENT
Joseph A. Wolking
Joseph T. Bessette
SUBSCRIPTIONS: All subscription correspondence should be addressed to Fire Engineering, P.O. Box 1289, Tulsa, OK 74101, or call 1 (800) 627-3210. Allow 30 days for change of oddress. Please include both old and new addresses, and enclose, if possible, on oddress label from a recent issue. Rates for U.S. and possessions: 1 yr., $18.95, 2 yr. $30.95, 3 yr. $42.95. Conodo and other countries: 1 yr. $30.00,2 yr. $52.00, 3 yr. $68.00. Single copy U.S. $3.00, other countries $6.00.
GROUP VICE PRESIDENT
FIRE ENGINEERING ISSN 0015-2587), is published monthly by Penn Well Publishing Co., 1421 S. Sheridan, Tulso, OK 74112. July 1989, Volume 142, Number 7. Second-class postage paid at Tulsa. Executive, editorial, aid advertising offices at 250 Fifth Ave., New York, NY 10001. ‘Copyright 1989 by PennWell Publcshmg Co. All rights reserved. Material may not be reproduced in any form without written permission of the publisher. Fire Engineering is a registered trademark.
POSTMASTER: Send address changes to Fire Engineering, P.O. Box 1289, Tulso, OK 74101.