Letter Re: Swiss Fallout Shelter Specifications

Dear Mr Rawles:
A follow-up to my last letter: Spiez is where the Swiss have their federal testing lab for Civil Defense.  The lab has an english version of its website.  At this link  your readers may acess the list of tested and aprooved components ( for CD shelters) and in a seperate document, the list of aprooval holders.  Interested readers can then with a search engine find the companies who make components of interest one of which is Lunor. This company also has an English version of their web site.  Readers can from there select blast doors, NBC filters,  valves etc.  Spiez is also the home of the Swiss level 4 confinement lab, ( of which a few pictures can also  be found  on the lab website).
 
Beste grussen und danke ein andere mal. - Jason L.