UP to 50 people attended an exhibition in Kingsteignton detailing proposals for dealing with the county's waste in the next 20 years.The exhibition is part of a lengthy consultation process by Devon County Council waste experts looking at ways to improve disposal facilities.Council officers discussed issues raised by residents about the options for the future use of the existing Heathfield landfill site.A county council spokesman said: 'The exhibition proved to be a very useful exercise.'