29Jul2002: Sydney, Australia. M5 East Motorway Tunnel and Stack. In tunnel air quality - Health concerns both inside the road tunnel and surrounding areas. M5 East Motorway Tunnel and Stack [Ten News, Mon 29Jul2002] RAPS Inc. http://nostack.8m.com/ 2002 Ten Network Toxic Tunnel [Ten News, Mon 29Jul2002] RAPS Inc. http://nostack.8m.com/ 2002 Ten Network