Several meetings between the City of Dryden and Weyerhaeuser have been held to determine how effectively the city and the mill responded to the July 30 chlorine dioxide gas leak at the mill. An official with the Dryden Fire Department says things were handled very well, but they did learn a few things from the incident. Weyerhaeuser continues an investigation into the possible causes for the gas leak; the company has conducted interviews with 160 of its employees.