Fiber cut in SF area

Dorn Hetzel dhetzel at
Mon Apr 13 11:43:47 CDT 2009

Or skip the locks and fill the manholes with sand.  Then provide the service
folks those big suction trucks to remove the sand for servicing :)

On Mon, Apr 13, 2009 at 12:28 PM, Andy Ringsmuth <andyring at>wrote:

> On Apr 13, 2009, at 11:12 AM, Mikael Abrahamsson wrote:
>  Manhole locks are just going to stop vandalism, and I think the threat
>>> to obstruction calculation just doesn't add up for that small level of
>>> isolated cases.
>> It doesn't stop it, it just makes it slightly harder, and they'll go after
>> another point.
> IMHO, I think manhole locks would only serve to HEIGHTEN the threat, not
> minimize it.  Flag this under the whole "obscurity" category, but think
> about this - if you're a vandal itching to do something stupid, and you see
> a bunch of manhole covers and a couple of them have locks on them, which
> ones are you going to target?  The ones with the locks, of course.  Why?
>  Because by the very existence of the locks, it implies there's something of
> considerable value beyond the lock.
> -Andy

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