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Klemmer

Triangulation Station Resets

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There was a recent thread here regarding "Reset" markers. I'm still confused. The issue is not just academic, as I'm soon (hopefully) going to be hunting some "Reset" markers, and I think there may be errors in the database that need to be corrected. My prime example is TZ2013, and there are around 10 others "nearby" that are similar. They all seem to have been "reset". The ones I have read thoroughly seem to have been "re-established" triangulation stations, at the same location as the (much older) original station. BUT - they seem to have retained the same PID (when eventually assigned & entered in the database), but have been named "resets". Furthermore, the newer monumentation date was used, but the much older original log dates were retained. So now there are logs older than the monumenation date, which seems very strange.

 

Any that I can recover (zero chance I can get to all them - please don't ask why), I will document thoroughly. So is TZ2013 a 1878 station or a 1940 station? Should the monumentation date in the database be corrected to 1878? Oh, and the discs are reliably reported to be stamped 1860-1940.

 

Advice from the pro's, please?

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I'm not a pro, but I see little point in worrying about such details.

If the NGS saw fit to continue the PID of the original mark using a reset disk, then I am happy to seek that mark and report my results.

Now, if you should find TWO marks at the site (one stamped 1878, and the other stamped 1878-1940), then you would have an issue!

I'm sure someone will be along soon to refute my protocol. ;)

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I am not a pro, but here is my understanding according to what I've seen and read.

 

When a vertical control disk is reset, it is stamped with the original designation and the word RESET, and added to the database as a new PID. In the thread you referenced, I included links for four marks that were reset in 2006 near me. The original stations were in danger due to road construction--specifically blasting rock outcroppings back further from the highway.

 

Three of the four of these marks survived, so the database will likely have PIDs for both the originals and the resets.

 

On triangulation stations, the "reset" mark is in the exact position as the original, so there is no chance that there is an original AND the reset. It's a guess, but I'd suspect this is why the original PID is used--it preserves the history of the station. I've recovered at least one that was reset. The designation includes "reset" but the stamping is as described in the thread you referenced, with the original monumentation date and the "reset" date. My understanding (again, I'm not a professional) is that the monumentation date on a triangulation station that has been reset is the date that the station was reset.

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With TZ2013 the station was never 'destroyed' only the surface the mark. The subsurface mark was recovered and for some reason a reset was done for it and the the surface marks were reset. The classic example of why it is better to avoid the "Destroyed" logs for Triangulation stations.

 

I don't know why the would change the name to "XXX RESET" and not change the PID#, but I suspect it has to do with the underground mark and it's condition.

 

John

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Only going by what I've observed...

Some recent examples:

LY2640 Ford Reset. Triangulation station. Set in 1959 by CGS. Reset in 1980 by NGS. Surface marker did not match location of subsurface disk. Renamed Ford Reset, but the same PID, and the description starts at original monumentation. Original disk restamped.

KV6951 Bald Hill Reset. Survey Disk. Not sure this one qualified as a triangulation station, with no azimuth or reference marks. Original station was a copper bolt, monumented in 1882 by CGS, found in 1991, and reset by NJGS. Renamed Bald Hill Reset. Original history lost. (Or maybe it was not included until it was reset?) New disk with two dates stamped on it.

LY2652 Bear Fort Reset. Triangulation station. Originally a copper bolt in bedrock. No underground station. Set in 1882 by CGS. Reset in 1942 by CGS. Description starts in 1882. New disk with two dates stamped.

LY0925 D 260 Reset 1963. Vertical control disk. Original (LY0924) set in 1942 by CGS. Reported destroyed in 1963 by NGS and reset by USCGS. New PID and new description, presumably because it is not at the same exact location. SEven feet difference in elevation.

In the case cited TZ2013, the subsurface station was also reset. That could be why the Description starts with the reset in 1940. It is not exactly the same station, with the subsurface mark rest as well.

Just my opinion from observation. In my examples, the subsurface mark was found intact, or the copper bolt was found in the original hole. (I really wish that they'd leave the copper bolts in plce. It's more fun to find an 1882 copper bolt than a 1942 reset disk!)

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John:

What do you think about the monumentation date? Is it right to have the monumentation date of 1940 and a recovery in 1878? or... maybe that's a question for the NGS? As I mentioned above, there are about 10 with the same situation on the dates.

K

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There's a hint in this quote from an Army field manual on topographic surveying:

[horizontal control] Reset. This is a station at which the monument and/or station marks have been replaced so that the mark is within 1 centimeter of its original position. A station is reset only from subsurface and/or RMs that have not been moved from their original positions.

Of course, the NGS policy might be different than the Army policy, and policy may have changed over the last 200 years, but it does sound like there is some rhyme and reason to the use of the "reset" designation on horizontal control.

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The datasheet raises 2 questions for me.

 

1st, did they use "disks" in 1878? From the datasheet... "STANDARD DISK SET INTO A MASS OF CONCRETE IN A DEPRESSION IN ROCK OUTCROP."

 

The 2nd question is "Was there a station MALVA"? If so, was it reset and named MALVA 2? If MALVA 2 is the original name, then the 1878 date would be the monumentation date for the underground mark and the station.

 

If it is a reset and was named MALVA 2 at the time of the reset then the correct monumentation date would be 1940.

 

John

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Thanks to all for your thoughts so far. If I get there, I'll drop a line back here in a week or so.

 

Yes, there is (was) a "Malva 1860", TZ2024 , but it is NOT at the same location at all. It is about 3.5 miles away, and very likely "unfindable" at best. Also I don't think I can get there (lots of "off-limit" areas). I believe that before the PID system came to be, the station designation (name) and date were used, as in "Malva 1860". So I guess in that system Malva 2, TZ2013 should maybe have been Malva 1878. I don't find one that is just "Malva".

 

And - to complicate things, there is ANOTHER "Malva 2", TZ2103, co-located (same disc, two PIDs) with the other Malva 2. One is the Horizontal control Tri-station, one is the Vertical control benchmark. I've seen that before. It's a two-fer! Maybe even a 4-fer, as the RM's are PID'd also! (Four of a kind, I do believe!)

 

BTW, malva is a common bush type plant around here, now more commonly called mallow (no relation to the Mallow Cup candy - for us old-timers :laughing: ). The plant is also tasty, especially the small spring leaves (yes, I have).

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Here are 2 benchmarks that one would think were the original benchmark and the other the reset. GQ0282 BROW and GQ0241 BROW 2

 

Care to guess which was set 1st? The point being, just because the name is XXXX2 doesn't necessarily mean it is a reset.

 

Since there are several MALVA stations in the area that would explain the "2" in the name. It appears that even though they did a reset they retained the original PID#,so it appears to be an 1878 monument for that station.

 

John

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From the history of a few marks in my area I suspect that BROW 2 was actually a reset, just not of the BROW that now exists. I believe it may be a reset of an older BROW that was removed from the record. In 1953 it was reset again and for some reason became just BROW, not BROW 3 as I would expect. Remember, these are human beings doing this and they make mistakes and judgment calls. I wonder about the decisions made at times but I rarely fret over them.

 

Note the wonderful USPSQD recovery of the mark too. A station, two reference marks and an azi, and all they had to say was "Not found".

Edited by mloser

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I can relate a personal experience with resetting a tri sta.

 

Back around 1997 we did a big GPS project. One of the Triangulation stations we wanted to use was found to have been reset from the RM's and the underground station by the USFS but never submitted to NGS. NGS wanted us to establish a new mark as close as we could get to the original position and sent us a new disk with this stamping "PAULDING 2". Because with only the RM's as a check on the USFS work and because the USFS had removed the ug mark, it could not be put back with confidence and had to be repositioned.

 

When ever the mark is moved from its original location, its given the number 2 designation along with the original name. If the mark is restored from the underground mark and then confirmed with network observations, you will have 2 date on the disk, e.g. 1899 1948.

 

Of course there are likely disks that were stamped incorrectly as many other agency's may have found the mark disturbed/destroyed and tried to save it.

 

Also with some old marks that were no survey disks, you may still find 2 dates on the disk. The original date of the mark and the subsequent date NGS recovered the mark, set a new more permanent mark (disk) and re-observed the mark in a precise survey in which other marks in the vicinity were part of the project. And by vicinity it could be hundreds of miles of triangulation.

Edited by Z15

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Here is another where I helped the NGS one man team reset a station..

 

|Dist|PID...|H V|Vert_Source|Approx.|Approx..|Stab|Designation

 

|----|------|- -|-----------|-------|--------|----|-----------

 

|....|QL0487|3 .|29/SCALED..|N454219|W0872511|A...|WILSON<-------Moved before being destroyed

 

|....|QL0651|3 .|29/SCALED..|N454219|W0872510|C...|WILSON 2

 

|....|QL0652|3 .|29/SCALED..|N454217|W0872533|A...|WILSON 2 AZ MK 3

 

|....|QL0653|3 .|29/SCALED..|N454216|W0872254|C...|WILSON AZ MK 2

 

QL0487 STATION RECOVERY (1988)

QL0487

QL0487'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988

QL0487'THE STATION MARK, REFERENCE MARKS 1 AND 2, AZIMUTH MARKS 1 AND 2 WERE

QL0487'RECOVERED IN GOOD CONDITION. BUT DUE TO ROAD CONSTRUCTION, ALL MARKS

QL0487'WERE DESTROYED AND A NEW STATION WILSON 2 1988 AND A AZIMUTH MARK 3

QL0487'WAS ESTABLISHED AT THIS TIME.

QL0487'RECOVERED BY RONALD L. RAMSEY, GEODETIC ADVISOR-MICHIGAN.

Edited by Z15

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I would add that I agree with 2 Old Farts. The name MALVA 2 isn't *necessarily* associated with the reset of this station.

 

I posted in another thread--I think on finding AZ marks--about 2 stations in my area. REPUBLIC, RK0574, was set in 1955 in the Republic, MI area. Because the original station was to be destroyed by mining operations, a new station was set in a different spot, and named REPUBLIC 2, RK0575.

 

So yes, it was "reset." But in this case, it's a totally different station in a completely different spot. (EDIT: This situation seems to fit with what Z15 described while I was typing.)

 

Actually, the "original" MALVA 1860 was recovered in good condition in 1868, the same year MALVA 2 was set. It looks to me like they just decided to establish a second station with a similar name in that year.

 

Dolphin, not sure I completely agree with you on it (Malva 2) being a different station. Yes, they reset the subsurface mark, but it appears that they found it intact, initially. So if the subsurface mark was recovered intact, and the position held (however exactly they do that) and then the subsurface mark reset. Would this really be any different in practice than recovering the subsurface mark, holding the position, then resetting the surface mark, as far as the horizontal location of the station? I could be wrong on that one though. I'll be interested in reading more responses from those in the know.

Edited by andylphoto

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Because with only the RM's as a check on the USFS work and because the USFS had removed the ug mark, it could not be put back with confidence and had to be repositioned.

 

Mike,

 

I'm curious on this...I understand from what you said that the the UG mark was removed when the station was reset by the USFS. Was there a question on the integrity of the position of the RMs as well? I thought the purpose of the RMs was to be able to re-establish the station if the station mark was lost. Are you saying that the UG mark is also required to reset the station, or was there something else going on that I'm not following with this situation? What about stations where there are RMs but no where underground mark was set?

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The RM's are to help locate the station and or ug mark and verify, not reset the station. When the surface mark is gone, the underground mark is used.

 

The RM's are subject to surface motion and can't be relied upon as gospel. Lacking an ug mark, the station would be lost.

 

We found the ug mark piled in with rocks around the 5 ft (deep) steel pipe and a USFS brass cap set. You would not recognize the UG mark. It was about a 1 lb piece of concrete that looked like a stone. There was no survey disk in it, just a brass carriage bolt that was covered over with a thin film of concrete. We looked all over the area and in the stuff we dug out of the hole to set the new concrete post looking for the ug mark. I found a rock the was flat on top and round on bottom. We looked it over and concluded it was concrete. I spent about 30 min wire brushing the concrete to expose the bolt, it appeared the USFS had not even known the dug up the ug mark because they did not know what to expect. The ug mark was sent to the NGS advisor.

 

Here is one I found and then the NGS Advisor came up and reset it. When the new surface mark was set, the accuracy was downgraded to 3rd order (typical). In 1992 as a part of our project for a US-2 IMT by-pass, Ron Ramsey asked that we use this mark to get it back the the accuracy it once was before he rebuilt it. We did that.

 

1 National Geodetic Survey, Retrieval Date = SEPTEMBER 7, 2007

QL0672 ***********************************************************************

QL0672 DESIGNATION - LORETTA RESET

QL0672 PID - QL0672

QL0672 STATE/COUNTY- MI/DICKINSON

QL0672 USGS QUAD - VULCAN (1955)

QL0672

QL0672 *CURRENT SURVEY CONTROL

QL0672 ___________________________________________________________________

QL0672* NAD 83(1994)- 45 46 21.19809(N) 087 46 08.66695(W) ADJUSTED

QL0672* NAVD 88 - 322.6 (meters) 1058. (feet) GPS OBS

QL0672 ___________________________________________________________________

QL0672 X - 173,485.563 (meters) COMP

QL0672 Y - -4,453,293.138 (meters) COMP

QL0672 Z - 4,547,856.543 (meters) COMP

QL0672 LAPLACE CORR- -3.73 (seconds) DEFLEC99

QL0672 ELLIP HEIGHT- 287.792 (meters) (07/17/02) GPS OBS

QL0672 GEOID HEIGHT- -34.76 (meters) GEOID03

QL0672

QL0672 HORZ ORDER - FIRST

QL0672 ELLP ORDER - FOURTH CLASS I

QL0672

QL0672.The horizontal coordinates were established by GPS observations

QL0672.and adjusted by the National Geodetic Survey in February 1997.

QL0672

QL0672.The orthometric height was determined by GPS observations and a

QL0672.high-resolution geoid model.

QL0672

QL0672.The X, Y, and Z were computed from the position and the ellipsoidal ht.

QL0672

QL0672.The Laplace correction was computed from DEFLEC99 derived deflections.

QL0672

QL0672.The ellipsoidal height was determined by GPS observations

QL0672.and is referenced to NAD 83.

QL0672

QL0672.The geoid height was determined by GEOID03.

QL0672

QL0672; North East Units Scale Factor Converg.

QL0672;SPC MI N - 110,236.986 7,940,185.721 MT 0.99994262 -0 33 21.2

QL0672;SPC MI N - 361,669.90 26,050,478.09 iFT 0.99994262 -0 33 21.2

QL0672;SPC WI N - 69,777.304 773,493.398 MT 0.99996900 +1 36 33.6

QL0672;SPC WI N - 228,927.70 2,537,702.92 sFT 0.99996900 +1 36 33.6

QL0672;UTM 16 - 5,069,064.877 440,205.324 MT 0.99964396 -0 33 04.0

QL0672

QL0672! - Elev Factor x Scale Factor = Combined Factor

QL0672!SPC MI N - 0.99995488 x 0.99994262 = 0.99989751

QL0672!SPC WI N - 0.99995488 x 0.99996900 = 0.99992389

QL0672!UTM 16 - 0.99995488 x 0.99964396 = 0.99959886

QL0672

QL0672|---------------------------------------------------------------------|

QL0672| PID Reference Object Distance Geod. Az |

QL0672| dddmmss.s |

QL0672| QL0673 LORETTA RM 1 18.294 METERS 09140 |

QL0672| QL0675 LORETTA AZ MK 261.085 METERS 17840 |

QL0672| QL0674 LORETTA RM 2 14.045 METERS 18315 |

QL0672|---------------------------------------------------------------------|

QL0672

QL0672 SUPERSEDED SURVEY CONTROL

QL0672

QL0672 ELLIP H (02/03/97) 287.766 (m) GP( ) 4 1

QL0672 NAD 83(1994)- 45 46 21.20004(N) 087 46 08.66401(W) AD( ) 1

QL0672 NAD 83(1994)- 45 46 21.19359(N) 087 46 08.66675(W) AD( ) 3

QL0672 NAD 83(1986)- 45 46 21.19405(N) 087 46 08.66668(W) AD( ) 3

QL0672 NAD 27 - 45 46 21.33800(N) 087 46 08.22100(W) AD( ) 3

QL0672

QL0672.Superseded values are not recommended for survey control.

QL0672.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.

QL0672.See file dsdata.txt to determine how the superseded data were derived.

QL0672

QL0672_U.S. NATIONAL GRID SPATIAL ADDRESS: 16TDR4020569065(NAD 83)

QL0672_MARKER: DH = HORIZONTAL CONTROL DISK

QL0672_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT

QL0672_SP_SET: SQUARE CONCRETE MONUMENT

QL0672_STAMPING: LORETTA 1954 1984

QL0672_MARK LOGO: NGS

QL0672_PROJECTION: PROJECTING 3 CENTIMETERS

QL0672_MAGNETIC: N = NO MAGNETIC MATERIAL

QL0672_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL

QL0672_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR

QL0672+SATELLITE: SATELLITE OBSERVATIONS - May 30, 2001

QL0672

QL0672 HISTORY - Date Condition Report By

QL0672 HISTORY - 1984 MONUMENTED NGS

QL0672 HISTORY - 19840823 GOOD NGS

QL0672 HISTORY - 19840823 GOOD NGS

QL0672 HISTORY - 19920421 GOOD MIDT

QL0672 HISTORY - 20010331 GOOD NGS

QL0672 HISTORY - 20010530 GOOD UPENGN

QL0672 HISTORY - 20060904 GOOD GEOCAC

QL0672

QL0672 STATION DESCRIPTION

QL0672

QL0672'DESCRIBED BY NATIONAL GEODETIC SURVEY 1984

QL0672'STATION IS LOCATED IN QUAD. 450874, ABOUT 8.05 KM (5.00 MI) EAST OF

QL0672'VULCAN, ON A SMALL BARE HILL ALONG THE RIGHT-OF-WAY OF A GRAVEL ROAD.

QL0672'TO REACH FROM THE INTERSECTION OF U.S. HIGHWAY 2 AND THE MAIN STREET

QL0672'IN NORWAY WITH THE CAUTION LIGHT, GO EASTERLY ON U.S. HIGHWAY 2 FOR

QL0672'3.86 KM (2.40 MI) TO A CROSSROAD IN THE NORTH EDGE OF VULCAN.

QL0672'CONTINUE EAST ON HIGHWAY 2 FOR 7.56 KM (4.70 MI) TO A GRAVEL ROAD

QL0672'LEFT. TURN LEFT AND GO NORTH ON GRAVEL ROAD FOR 0.32 KM (0.20 MI) TO

QL0672'THE AZIMUTH MARK ON LEFT OR WEST SIDE OF GRAVEL ROAD AS DESCRIBED.

QL0672'CONTINUE NORTH FOR 0.24 KM (0.15 MI) TO TOP OF SMALL HILL AND

QL0672'STATION ON LEFT OR WEST SIDE OF ROAD AS DESCRIBED.

QL0672'STATION PROJECTS ABOUT 1 INCH. IT IS 10.363 M (33.999 FT) WEST FROM

QL0672'THE CENTER OF THE GRAVEL ROAD, 1.524 M (5.000 FT) EAST FROM A

QL0672'NORTH-SOUTH FENCE LINE AND 0.457 M (1.499 FT) EAST FROM A MWP.

QL0672'A TRAVERSE CONNECTION WAS MADE TO THE AZIMUTH MARK USING ELECTRONIC

QL0672'DISTANCE MEASURING EQUIPMENT.

QL0672'HEIGHT OF TARGET SHOWN ABOVE THE MARK WAS 1.5 METERS.

QL0672'RECOVERED BY RONALD L. RAMSEY, NGS GEODETIC ADVISOR-MICHIGAN.

QL0672

QL0672 STATION RECOVERY (1984)

QL0672

QL0672'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984 (CLN)

QL0672'THE STATION MARK WAS FOUND WITH THE TOP PART OF MONUMENT BROKEN OFF

QL0672'AND LAYING ON ITS SIDE. REFERENCE MARKS 1 AND 2 AND THE AZIMUTH MARK

QL0672'WAS FOUND IN GOOD CONDITION. ALL MARK ARE NOW FLUSH WITH GROUND. THE

QL0672'UNDERGROUND STATION MARK WAS RECOVERED AND THIS POINT WAS HELD TO SET

QL0672'A NEW SURFACE DISK. THE DIRECTION FROM THE AZIMUTH MARK TO REFERENCE

QL0672'MARK 2 CHECKED THE OLD DATA, THE DISTANCE TO REFERENCE MARK 2 WAS

QL0672'FOUND TO BE SHORTER BY 0.041 METER (0.135 FT) THE DIRECTION FROM THE

QL0672'AZIMUTH MARK TO REFERENCE MARK 1 DID NOT COMPARE WITH THE OLD DATA NOR

QL0672'DID THE ANGLE BETWEEN REFERENCE MARK 1 AND 2. THE DISTANCE TO

QL0672'REFERENCE MARK 1 WAS ALSO FOUND TO BE SHORTER BY 0.026 OF A METER.

QL0672'THE TO REACH FOR THIS STATION IS STILL ADEQUATE TO FIND THE STATION.

QL0672'

QL0672'THE STATION IS A STANDARD NGS DISK STAMPED--LORETTA 1954 1984--, SET

QL0672'INTO THE TOP OF A ROUND CONCRETE MONUMENT, 10 INCHES (30 CM) IN

QL0672'DIAMETER, PROJECTING 1 INCH (3 CM) ABOVE THE GROUND. THE STATION IS

QL0672'LOCATED 10.363 METERS (33.999 FT) WEST FROM THE APPROXIMATE CENTERLINE

QL0672'OF GRAVEL ROAD, 1.524 METERS (5.000 FT) EAST FROM A NORTH-SOUTH FENCE

QL0672'LINE AND 0.457 METERS (1.499 FT) EAST FROM A METAL WITNESS POST.

QL0672'

QL0672'REFERENCE MARK NO 1 IS A STANDARD CGS DISK STAMPED--LORETTA NO 1

QL0672'1954--, SET INTO THE TOP OF A SQUARE CONCRETE MONUMENT, 10 INCHES

QL0672'(30 CM) IN DIAMETER, FLUSH WITH GROUND. THE STATION IS LOCATED

QL0672'7.315 METERS (23.999 FT) EAST FROM THE APPROXIMATED CENTERLINE OF

QL0672'GRAVEL ROAD, 0.305 METERS (1.001 FT) WEST FROM A NORTH SOUTH FENCE

QL0672'LINE AND 0.305 METERS (1.001 FT) NORTH FROM A WITNESS POST AND 1.2

QL0672'METERS (3.9 FT) HIGHER THAN THE STATION.

QL0672'

QL0672'REFERENCE MARK NO 2 IS A STANDARD CGS DISK STAMPED--LORETTA NO 2

QL0672'1954--, SET INTO THE TOP OF A SQUARE CONCRETE MONUMENT, 10 INCHES

QL0672'(30 CM) IN DIAMETER, FLUSH WITH GROUND. THE STATION IS LOCATED

QL0672'11.582 METERS (37.999 FT) WEST FROM THE APPROXIMATE CENTERLINE OF

QL0672'GRAVEL ROAD, 0.305 METERS (1.001 FT) EAST FROM A NORTH SOUTH FENCE

QL0672'LINE AND 0.305 METERS (1.001 FT) NORTH FROM A WITNESS POST AND 0.5

QL0672'METER (1.6 FT) LOWER THAN THE STATION.

QL0672'

QL0672'AZIMUTH MARK NO 1 IS A STANDARD CGS DISK STAMPED--LORETTA 1954--, SET

QL0672'INTO THE TOP OF A SQUARE CONCRETE MONUMENT, 10 INCHES (30 CM) IN

QL0672'DIAMETER, FLUSH WITH GROUND. THE STATION IS LOCATED 10.363 METERS

QL0672'(33.999 FT) WEST FROM THE APPROXIMATE CENTERLINE OF GRAVEL ROAD,

QL0672'0.914 METERS (2.999 FT) NORTH FROM A 4 X 4 INCH WHITE WOODEN

QL0672'WITNESS POST, 0.610 METERS (2.001 FT) EAST FROM A NORTH-SOUTH FENCE

QL0672'LINE AND 0.305 METERS (1.001 FT) EAST FROM A METAL WITNESS POST.

QL0672'STATION IS LOCATED ABOUT 5.0 MILES (8.0 KM) EAST OF VULCAN ON A SMALL

QL0672'BARE HILL ALONG THE RIGHT-OF-WAY OF A GRAVEL ROAD. TO REACH FROM THE

QL0672'INTERSECTION OF U.S HIGHWAY 2 AND THE MAIN STREET IN NORWAY GO

QL0672'EASTERLY ON U.S HIGHWAY 2 FOR 2.4 MILES (3.9 KM) TO A CROSSROADS IN

QL0672'THE NORTH EDGE OF VULCAN. CONTINUE EAST ON HIGHWAY 2 FOR 4.7 MILES

QL0672'(7.6 KM) TO A PAVED ROAD LEFT WHICH TURNS INTO GRAVEL. TURN LEFT AND

QL0672'GO NORTH FOR 0.2 MILE (0.3 KM) TO THE STATION ON LEFT AS DESCRIBED.

QL0672

QL0672 STATION RECOVERY (1992)

QL0672

QL0672'RECOVERY NOTE BY MICHIGAN DEPARTMENT OF TRANSPORTATION 1992 (BRT)

QL0672'STATION IS LOCATED IN QUAD. 450874, ABOUT 2 MILES (3.2 KM) EAST OF

QL0672'LORETTO, ABOUT 3-3/4 MILES WEST ALONG UNITED STATES HIGHWAY 2 FROM THE

QL0672'DICKINSON - MENOMINEE COUNTY LINE, NEAR CENTER OF SECTION 16, T-39-N,

QL0672'R-28-W, WAUCEDAH TOWNSHIP, AND ON THE VULCAN QUADRANGLE MAP.

QL0672'

QL0672'TO REACH FROM THE FLASHING TRAFFIC LIGHT ON UNITED STATES HIGHWAY 2 IN

QL0672'LORETTO PROCEED 2.25 MI (3.62 KM) EAST ALONG UNITED STATES HIGHWAY 2

QL0672'TO A PAVED ROAD NORTHEAST. FOLLOW PAVED ROAD 0.15 MI (0.24 KM) TO

QL0672'WHERE PAVED ROAD BECOMES GRAVEL. CONTINUE ON GRAVEL ROAD 0.15 MI

QL0672'(0.24 KM) TO STATION ON LEFT AT TOP OF HILL.

QL0672'

QL0672'STATION IS SET IN CONCRETE MONUMENT 5.0 FT (1.5 M) EAST OF FENCE LINE,

QL0672'29.0 FT (8.8 M) WEST OF CENTER OF ROAD, 46.0 FT (14.0 M) NORTH OF

QL0672'LORETTA NO 2, 60.0 FT (18.3 M) WEST OF LORETTA NO 1, AND 1.0 FT (0.3

QL0672'M) EAST OF A CARSONITE WITNESS POST. NOTE AZIMUTH MARK NOT SEARCHED

QL0672'FOR.

QL0672

QL0672 STATION RECOVERY (2001)

QL0672

QL0672'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2001 (DB)

QL0672'THIS REPORT WAS SUBMITTED BY THE US POWER SQUADRONS.

QL0672

QL0672 STATION RECOVERY (2001)

QL0672

QL0672'RECOVERY NOTE BY UP ENGINEERS AND ARCHITECTS INC 2001 (ERF)

QL0672'RECOVERED IN GOOD CONDITION.

QL0672

QL0672 STATION RECOVERY (2006)

QL0672

QL0672'RECOVERY NOTE BY GEOCACHING 2006 (AJL)

QL0672'RM1, RM2 AND AZ MARK ALSO RECOVERED

Edited by Z15

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Yes, thanks to all for your thoughts.

After action report:

1) Malva 2, TZ2013 recovered as described.

2) Malva 2, DY2103 recovered as described.

3) No time available to look for the RM's (darn). My time on site was very limited due to matters beyond my control. Well, at least it was a two-fer.

 

From the data available, I still wonder why the disc is marked 1860-1940. My best guess (hope?) is that there was a typo at the time of computer data entry, and the monumentation date should have actually been 1860. I realize the existing disc was placed in 1940. Were discs used during or before 1878 as is indicated in the 1878 Station Description?

 

DaveD - Any chance you can check the file on this one?

 

BTW: Many other interesting recoveries on the trip, details (and poker hands) in work.

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