So I've almost collected all the scrap I'm going to be taking in and have come up with a few cans I assume are pressurised.
Still cant seem to get pics uploading so a link will do for now :
http://i1308.photobucket.com/albums/...pssuj0oyja.jpg

How can I go about safetly depressurising these before flattening etc? What I have found online is less than ideal.
Also, would your local yard accept them as is? or do they like to see a hole at least? I know for example fire extinguishers must be cut in two...