Found in good condition, about 26 feet west of center of north D street, which appears widened in recent decades, 36 feet south of main track (which is south of a major spur line), 25 feet south of a side track, 1.5 ft south of the southeast corner of concrete signal building 304.1, and 0.8 ft above base of rail. Stamping 'Y 111 1935' Handheld coordinates N41 01 45.8 W092 48 47.7, sky obscured by building.
Originally, I didn't trust this one with discrepancies on the street distance and relative height above the track, and no mention of the signal building. A point 36 ft west of the street would better fit the elevation relative to the track. Did someone re-plant the post in a convenient place after grading and installing the building?
The street here is a few feet wider than that further south but is still pretty much on the same center line, although it isn't exactly straight. Probing finds the post is at least 3 ft long, so it isn't just a broken stub that got replanted. The nearest pole is newer and 40 ft away, so is irrelevant. It is not obvious whether the track has been raised since 1935, although that is common.
I'm told these signal buildings were shipped in on rail cars and dropped in place, probably in the 1940's or 50's, so it is believable the post could have been undisturbed.
[This entry was edited by Bill93 on Friday, December 30, 2005.
[This entry was edited by Bill93 on Sunday, May 03, 2009 at 6:08:18 PM.]
A leveling run from MH0135 Z 111 at post office with expected accuracy +/- 0.050 ft found MH0134 to be 0.005 ft too low-essentially perfect. Therefore I will report this mark as Good.
Methods: Topcon AT-F4 (good construction grade) automatic level and a rod with 0.05 ft marks estimated to 0.01ft for 3-wire readings. All turning points crayon mark on concrete. Individual sight lengths were not all well balanced but overall sum of backsight distances exceeded foresights by only 52 ft in 1684 ft run.
Height above base of rail 0.8 ft.
[This entry was edited by Bill93 on Monday, June 29, 2009 at 8:15:12 AM.]
(Not at field location)