not sure thiers a defense for this

[kimba1]

http://www.sfgate.com/cgi-bin/article.cgi?f=/n/a/2008/12/03/national/a092409S37.DTL&tsp=1

for the past couple of years people have been killed by blackfriday sales

I`m not sure any business has a defense against
I hope none will use the lameass excuse the employees knew the risk of working that day

[Xavier_Onassis]

This is the cost of doing business. It should not be too hard to manipulate the crowd so that no one gets trampled. I'm sure that Disney and other theme parks know how to do this and the knowledge is available  to retailers and architects. After all, there are huge crowds on July 4th and other busy days in theme parks and we almost never hear of tramplings there. I would imagine that the Japanese subway systems also have a lot of data on how to avoid these accidents.

[Plane]

Soccar Games in Europe and South America have had this sort of problem too.

Worst examples occur regularly in the massive crouds participateing in the Haj.

No one is steering a croud , the mass behaves like a fluid.

Obsticles that can slow the flow can be incorporated into the arcitecture , Bollards and handrails that force the people to zig zag and prevent the long straight lines that allow the force to be transfered from the back of the croud to the frount.

[Xavier_Onassis]

Again, Japanese subways and Disney have huge crowds and rarely does anyone get hurt. The Haj in Mecca is probably not so well planned. is planned at all. I imagine that getting crushed is a longtime occurrence in Mecca.