Police and the infrastructure ministry are working on ways to alleviate processing and storage problems caused by the ban on the recreational use of laughing gas. Laughing gas, or nitrous oxide, was banned at the beginning of the year and police have so far impounded some 23,000 cylinders of the party drug. As of this weekend, the ban will be actively policed resulting in the seizure of more cannisters and cylinders, police expect. The problem faced by the authorities is…