Does anyone know if this color coding system for reference monuments appeared in a government document sometime prior to 1978?
NORTHEAST - METALLIC SILVER
SOUTHEAST - FLUORSCENT PINK
SOUTHWEST - FLUORSCENT BLUE
NORTHWEST - FLUORSCENT ORANGE
Berntsen said they adopted the government instructions when they came out with the DEEP-1 design in 1978-79. I didn't see it in the 1973 Manual, so it might have been internal instructions? Nebraska adopted this system in 1986 and I am giving a talk about the history behind the instructions.
I have no idea. The best I could do was stare at the thread and hit the like button.
They conform to U.S. government instructions.
Saying U.S. government covers a lot of ground, doesn't it ?
Learn something new every day around this place.
I have heard from a retired BLM employee that the BLM Washington Office had issued an Instruction Mememorandum around 1979 providing policy on using colored DEEP-1's as collateral monumentation. Does anyone have a connection with the Washington Office to possibly get me a copy of this memorandum?
As a surveyor for a federal agency, I've never heard of this and have seen no documentation for it. Granted, I'm sort of new here but none of the old-timers had heard of such a thing either. I have cases and cases of these magnets and they're all orange.
Plus, the scheme doesn't make sense - NE, SE of what? Isn't one guy's SE another guy's NW?
When I worked for the BLM in Alaska in the mid 80s, that was how we used them. I don't recall ever seeing anything in writing. We nearly always put a white one under a post we set, but only occasionally, when there was a lack of existing physical objects that were suitable for use as bearing objects that we would set a DEEP.
To Answer Allen Wrench's question, the direction is from the monument being witnessed, same as a call for a bearing tree or any other bearing object.
I've never seen anyone use them outside of Alaska, so I wouldn't be surprised if the pattern/policy came out of the Anchorage office.
I can get it for you. I believe it was initiated as State Office policy first. In Alaska we were directed to use the DEEP-1s around 1986 when bearing trees were not available within Manual limits. Keep in mind BLM policy is only valid for 2 years unless policy is extended.
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eapls2708, post: 429642, member: 589 wrote: To Answer Allen Wrench's question, the direction is from the monument being witnessed, same as a call for a bearing tree or any other bearing object.
I think I get it now - the magnet wasn't buried right next to the monument. So if you found an orange magnet, it would mean the actual corner monument was SE of the magnet?
NorthernSurveyor, post: 429706, member: 149 wrote: I can get it for you. I believe it was initiated as State Office policy first. In Alaska we were directed to use the DEEP-1s around 1986 when bearing trees were not available within Manual limits. Keep in mind BLM policy is only valid for 2 years unless policy is extended.
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Thanks. Please send to my work email. jpenry at lancaster.ne.gov