Theres too many types, but what type of fire extinguishers should a typical small office have?
call your local utility or city and report the leak as serious and is flooding area be sure you speak to a real person and get a work order number so that if any damage occurs you will have proof of the report.
Here's the quick fix. Tie a plastic tie down to the chain and feed it through the sprocket, it's the same process that electrictions use for fishing wire through condex pipe.
Reaper Minis offers several lines of metal and resin models in both fantasy genres and sci-fi. Personally, when i'm making DD models for my friends, i use the models from their P-65 line. Link is in the sources