http://www.ab.ust.hk/hseo/tips/ch/ch005.htm (Hong Kong University of Science & Technology)
The final page (p. 4) of the August 2001 REM Newsletter carries an account of the incident captioned "Reprinted from CSHEMA, Campus Safety Division of the National Safety Council. Adapted from Universities Safety Assn Digest Vol 59, April 1997 by Bob Knell, Durham University, UK."
Over the years links to the story have been lost and hard to find, as URLs change and websites are reorgqanized. A copy of the All above in the pastel yellow backround section was taken from http://www.ab.ust.hk/hseo/tips/ch/ch005.htm
A copy of the Hong Kong UST version (no different from the link above until that URL is changed and leads nowhere) has been saved here.