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Details for Benchmark: FS1138

N 35° 08.187 W 114° 48.149 (NAD 83)

Altitude: 2684

Coordinates may not be exact. Altitude is SCALED and location is ADJUSTED. (more info)

Location:
In SAN BERNARDINO county, CA View Original Datasheet
Designation:
T 136
Marker Type:
drill hole
Setting:
in rock outcrop
Stability:
Most reliable and expected to hold position/elevation well.

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Recovered in good condition. It is actually over 130 feet from T 136 HIGH. It is the only small pile of rocks within 50 of the given coordinates.

Recovered with Klemmer.

Found some nice clear quartz crystals will hiking to the stations.

[Photos:]
photoT 136 near the CA/NV stateline
photoT 136 view west and towards Klemmer

Not quite sure why Me & Bucky couldn't find the drill hole. After coming down the hill from T 136 HIGH, the rock cairn was easily located. After careful removal of the covering rocks, we quickly found the drill hole. Both datasheets (T 136 and T 136 HIGH) say the distance between the marks is "about 75 feet". It would be difficult to pace or tape because of the terrain. Both GPSr's had the adjusted coordinates of the marks well within handheld GPSr expected error, but both GPSr's also had "about" 132 feet between the marks. I would give that a tolerance of, at most, 10 feet. 100+ years of technology seems to have an edge this time. Drill hole in good condition. Surprisingly, no pole support wires found. 2oldfarts and Klemmer's third 1899 first recovery of the day! What a day!

[This entry was edited by Klemmer & TeddyBearMama on Tuesday, November 06, 2007 at 9:35:39 PM.]

[Photos:]
photoCloseup of the drill hole
photoWider view
photoDrill hole with GPSr
photoDuelling Magellan GPSr's and drill hole
Agreement within expected margin
photoScenic view to the east from T 136
Not possible to get the drill hole and any scenery in the same shot, so our illustrious turn of the century (?) shovel is on the mark for this shot. The shovel was left on the cairn after it was carefully re-piled.

Not able to find Drill Hole T 136 at this time. A small pile of stones were found at this site, but no drill hole or pole.

[Photos:]
photoFS1138 20050510 G
Datasheet for Drill Hole T 136 w/GPSr.
photoFS1138 20050510 A1 S (DNF)
South at the location of Drill Hole T 136.
photoFS1138 20050510 A2 NW (DNF)
Northwest at the location of Drill Hole T 136.

Documented History (by the NGS)

01/01/1899 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1899 (CHS) STATION IS ON THE FIRST WHITE, GRAVELLY BUTTE S OF PASS AND W OF THE ROUGH HILLS THAT EXTEND FROM THE PASS TO THE N, ON E SIDE OF PIUTE VALLEY. THE BUTTE IS A WHITE TURTLE BACKED ONE, ENTIRELY SEPARATED FROM THE MAIN RANGE. ON THE TOP IS LOCATED STATION T 136 HIGH, MARKED BY CROSS CUT IN THE ROCK, POLE AND PILE OF STONES. STATION T 136 IS ON THE N SLOPE OF BUTTE ABOUT 75 FEET FROM T 136 HIGH, MARKED BY DRILL HOLE IN SOLID ROCK, POLE AND PILE OF STONES. THIS POINT WAS OMITTED ON THE CORRECTED LINE AS IT FELL ON A PART OF THE LINE VISIBLE FROM NO OTHER STATION, AND IT WAS NOT PRACTICABLE TO MEASURE FROM OLD STATION.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in June 1996. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day.
  • The orthometric height was scaled from a topographic map.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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