FIRE ENGINEERING
Park 80 West, Plaza Two, 7th Floor Saddle Brook, NJ 07662 Tel. (201) 845-0800, Fax (201) 845-6275
Editor William A. Manning
Managing Editor Diane Feldman
Assistant Editor Mary Jane Dittmar
Senior Editorial Assistant John J. Napolitano
Technical Director Thomas F. Brennan
Editorial Advisory Board
Rand-Scott Coggan
Glenn P. Corbett
Ricky Davidson
Ray Downey
Vincent Dunn
Frank L. Fire
Gerald L. Grey
Jack Bennett
Francis L. Brannigan
Charles G. King
Richard A. Marinucci
John Mittendorf
Gregory G. Noll
William C. Peters
John B. Sachen
Fid Spahn
Walt Hendrick
Francis X. Holt
Columnists/Contributing Editors
Francis L. Brannigan Frank L. Fire
Thomas F. Brennan David P. Fornell
Gene P. Carlson John M. Malccky
Glenn P. Corbett Richard A. Marinucci
Ray Downey Peter G. Sparber
Harvey Eisner Curt Weldon
Publisher Henry H. Dinneen
Director of Book Publishing Joanne Ezersky
Production Manager Mike Paxton. Tulsa
Advertising Coordinator Audrey I.. Dombrowski
Feature Design Steve Hetzel
Circulation Manager Larry Lofton
Manager Paid Circulation Patsy Russo
PENNWELL PUBLISHING COMPANY
P.O. Box 1260 • Tulsa, OK 74101 • (918) 835-3161
Chairman Philip C. Lauingcr, Jr.
President Joseph A. Wolking
Senior Group Vice President Joseph T. Bessette
SUBSCRIPTIONS: All subscription correspondence should be addressed to Fire Engineering. P.O. Box 1289. Tulsa, OK 74101. or call 1 (800 ) 752*9768. Allow 30 days for change of address. Please include both old and new addresses, and enclose, if possible, an address label from a recent issue. Rates for U S. and possessions: 1 yr. 521.95, 2 yr. S35.95, 3 yr. $49 95Canada and other countries: 1 vr. 534.50, 2 yr. S59.50, 3 vr. S78.50. Single copy U S. 53 50, other countries $7.00.
FIRE ENGINEERING (ISSN (X) 15-2587), is published monthly by PennWell Publishing Co., 1421 $. Sheridan, Tulsa. OK 74112. September 1991. Volume 144, Number 9. Second-class postage paid at Tulsa and additional mailing offices. Executive, editorial, and advertising offices at Park 80 West. Plaza Two. 7th Floor, Saddle Brook. NJ 07662. ’ Copyright 1991 by PennWell Publishing Co. All rights reserved. Material may not bereproduced 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. Tulsa. OK 74101.