Brian Phipps
2010-01-08
I believe HM is short for Hazardous Materials and I think that it's more for the 26 tunnel than it is for the excavation work.
-Brian
On Jan 8, 2010, at 11:14 AM, mohair wrote:
> I was driving on the Sunset Hwy where they are doing some major excavation and saw some signs with the red circle/bar meaning "no" with HM. So what is HM and why would they not want it around an excavation site? I suspect it has something to do with explosives.
>
> Any information on this?
>
>
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