Natural Resources and Waste Management to June 2012. Natural Reseources and Waste Management to September 2012. Natural resources and waste management to December 2012. Natural Resources and Waste Management to March 2013. Natural Resources and Wasrte Management to June 2013. Natural Resources and Waste Managment to October 2013. Natural Resources and Waste Management to January 2014. Natural Resources and Waste Management to April 2014.