If you have a PDF version, there are four links that do not work directly (but if you manually copy address in the book, it will work)
Pg 43
Book-Resources
Pg 45
http://www.digicast.com.au/blog/
bid/85671/When-Workplace-Safety-Training-Videos-Go-Bad
Pg 87
http://www.digicast.com.au/warm-ups/
Pg 88
http://www.digicast.com.au/texas