Bell System Warning Sign

[Dave F]

Here's an unusual porcelain Bell System sign.  Size is 11"x7".  Heavy and old, and one I have certainly never seen before.  Maybe it was installed on the door to some rarely-used cable vault(?).  My wife said I should hang it on the bathroom door!

[Sargeguy]

Cool!

[Jim Stettler]

My guess would be for "Natural Gas" facilities, Neat sign.
Jim S.

[Victor Laszlo]

I don't seem to be able to recall any Bell System natural gas facilities, but I can't be expected to know everything.  I suspect that the door was marked this way to remind workers entering an unmanned CDO building, in an area of the country where there was a chance of natural gas infiltration, to use their gasimeter before entering.

[Jim Stettler]

I am thinking of "Natural Gas" facilities that had Bell Phones installed as their dial tone provider.
JMO,
Jim S.

[Victor Laszlo]

Well, it admonishes those entering to read the practices for entering, not installing. If the facility required explosion-proof sets, for instance, I doubt if that sign would be installed at a subscriber's premises. I guess we'll never know...