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 Feldmon
SENIOR EDITORIAL
ASSISTANT John J. Nopolitano
TECHNICAL DIRECTOR Thomas F. Brennon
EDITORIAL ADVISORY BOARD
Jack Bennett Frank L. Fire
Francis L. Brannigan Gerald L. Grey
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
COLUMNISTS
Francis L. Brannigan Frank L. Fire
Thomas F. Brennan John M. Molecky
Gene P. Carlson Richard A. Marinucci Ray Downey 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 SERVICES, TULSA
Larry Lofton Patsy Russo
Circulation Mgr. Mgr. Paid Circulation
PENNWELL PUBLISHING COMPANY
P.0. Box 1260 • Tulsa, OK 74101 (918) 835-3161
CHAIRMAN Philip C. Louinger, Jr.
PRESIDENT Joseph A. Wolking
SENIOR GROUP
VICE PRESIDENT Joseph T. Bessette
SUBSCRIPTIONS: All subscription correspondence should be oddressed to Fire Engineering, P.0. Box 1289, Tulsa, OK 74101, or coll 1 (800) 752-9768. Allow 30 days for change of address. Please include both old and new addresses, and enclose, if possible, on address label from a recent issue. Rales for U.S. ond possessions: 1 yr. $21.95, 2 yr. $35.95, 3 yr. $49.95. Conodo ond other countries: 1 yr. $3460,2 yr. $59.50,
3 yr. $78-50. Singie copy U.S. $3.50, other countries $7.00.
FIRE ENGINEERING (ISSN 0015-2587), is published monthly by PennWell Publishing Co., 1421 S. Sheridon, Tuba. OK 74112. October 1990, Volume 143, Number 10. Second-doss postage paid at Tulsa ond additional moiling offices. Executive, editoriol, ond advertising offices at Pork 80 West, Plaza Two, 7th Floor, Saddle Brook, NJ 07662. Copyright 1990 by PennWell Publishing 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, Tulsa, OK 74101.
