The hazardous or toxic waste material storage apparatus includes a flexible inner container for receiving the hazardous waste material or toxic waste material with the inner container having at least one zone of expansion which is substantially more expandable than other portions of the inner container....http://www.google.com.au/patents/US5562592?utm_source=gb-gplus-sharePatent US5562592 - Hazardous or toxic waste material storage apparatus and associated method
