Cylinder and Container Safety Overview:

http://www.praxairdirect.com/Industrial-Gas-and-Welding-Information-Center/Safety/cylinder-Safety.html

Cryogenic Tank Safety:

http://www.praxairdirect.com/Industrial-Gas-and-Welding-Information-Center/Safety/Cryogenic-Tank-Safety.html

And last but not least... Gas Safety Overview:

http://www.praxairdirect.com/Industrial-Gas-and-Welding-Information-Center/Safety/gas-safety-overview.html

Lots of safety info in these links that are easy on the eyes and not so long to read it all.

P.S. Stay Safe out there and watch out for those "Know it all' knuckleheads who don't know diddley!

Respectfully,
Henry