I think DCHAS members may want to be aware of this in case they have people who like to emulate Internet videos in the organization...
http://www.msn.com/en-us/video/wonder/liquid-methane-experiment-in-class/vi-AAaBJYz
This teacher leaves his students treating the floor like lava while leaving them in awe and he shows them what a little bit of liquid methane will do when lit on fire and poured onto the floor. Perhaps there's an opportunity to develop a Job Hazard Analysis of this demonstration...
- Ralph
Ralph Stuart
secretary**At_Symbol_Here**dchas.org
Secretary
Division of Chemical Health and Safety
American Chemical Society