Calgary, Alberta ? On June 25 and 26, Shell Canada employees diverted over 1,500 kilograms of waste from landfills in Calgary? first corporate Reuse Extravaganza. Brought to our city by Clean Calgary, a Reuse Extravaganza is an innovative collection event that helps local agencies obtain reusable household items that might otherwise end up in landfills. Shell Canada, in partnership with Clean Calgary and Oxford Property Management, is the first business to host a Reuse Extravaganza. Previously, they have been held at local community associations around Calgary.