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
Jack Bennett Gerald L. Grey
Francis L Brannigan Walt Hendrick
Rand-Scott Coggan Francis X. Holt
Glenn P. Corbett Richard A. Marinucci
Ricky Davidson John Mittendorf
Ray Downey John B. Sachen
Vincent Dunn Ed Spahn
Frank L. Fire
Columnists/Contributing Editors
Francis L. Brannigan Frank L. Fire
Thomas F. Brennan John M. Malecky
Gene P. Carlson Richard A. Marinucci
Glenn P. Corbett Richard L. Mueller
Ray Downey Peter G. Sparber
Harvey Eisner Curt Weldon
Publisher Henry H. Dinneen
Director of Book Publishing Daniel G. Smith
Production Manager Mike Paxton, Tulsa
Advertising Coordinator Audrey L. Dombrowski
Feature Design Steve Hetzel
Circulation Manager Urn Lofton
Manager Paid Circulation Patsy Russo
PENNWELL PUBLISHING COMPANY
P.O. Box 1260 • Tulsa, OK 74101 • (918) 835-3161
Chairman Philip C. Uuinger, Jr.
President Joseph A. W olking
Senior Group Vice President Joseph T. Bessette
SUBSCRIPTIONS: ALl subscription correspondence should be addressed to Fire Engineering. P.O. Box 1289, Tulsa. OK “4101, or call 1 (800 ) 752-9768. Allow 30 (.lays for change of address. Please include both old and new addresses, and enclose, if possible, an address label from a recent issue Rates for l .S. and possessions I vr 21.95, 2 vr. 35.95. 3 yr S4995. Canada and other countries: 1 vr. 34.50. 2 yr. 59.50. 3 yr 78.50. Single copy U S. S3 50, other countries S”00.
FIRE ENGINEERING (ISSN 0015-2587), is published monthly by PennVfeil Publishing Co., 1421 S Sheridan. Tulsa. OK “4112 February 1991. Volume 144, Number 2. Second-class postage paid at Tulsa and additional mailing offices Executive, editorial, and advertising offices at Park 80 West Plaza Two. “th Floor Saddle Brook. NJ Copyright 1991 bv PennW eU Publishing Co All rights reserved. Material may not be reproduced in any tbrm 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.