ArtMan Posted February 13, 2011 Share Posted February 13, 2011 Folks, For most of the 20th century, the United States controlled the Panama Canal Zone. I have to believe that, in conjunction with the construction and operation of the canal and for other purposes, surveyors, engineers, and scientists set and used benchmarks of various sorts. (I suppose the French did, too, for that matter, in their ill-fated canal-building effort.) I don't see any sign of datasheets for PIDs in the former Canal Zone in the NGS retrieval tools (which includes current US territories such as Guam and Puerto Rock, as well as some with no US connection I know of, including Honduras and Trinidad). Anyone know a source for Panama benchmark data? ~ArtMan~ Quote Link to comment
+billwallace Posted February 13, 2011 Share Posted February 13, 2011 Annual report of the Isthmian Canal Commission - Google Books Starting at page 282 there are two tables - Primary and secondary triangulation points with coordinates in the Panama-Colon datum. Can't tell if they put monuments there. Pages 272-282 have a lot of info, I just skimmed it but did see a mention of a triangulation map and mentions of the illustrious USC&GS. Quote Link to comment
ArtMan Posted February 13, 2011 Author Share Posted February 13, 2011 Very excellent find! But I was hoping for something a little more contemporary than 1911.... Quote Link to comment
+billwallace Posted February 14, 2011 Share Posted February 14, 2011 little more contemporary than 1911.... I just watched a Panama Canal documentary on PBS (American Experiance i think) and I'm reading a biography of Theodoore Roosevelt - I couldn't help myself Quote Link to comment
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