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Date nails were driven into railroad ties, bridge timbers, utility poles, mine props, and other wooden structures for record keeping purposes.
For a good site on date nails from poles, go to Scott Weed's site:
Over 2,000 different date nails were used by North American railroads which show the year.
Add to that the nails which tell wood, treatment, and other information, and toss in all date nails used in poles and other timbers, and the total number of different nails from this continent easily exceeds 3,500. This one was manufactured to be 2 1/2" long (it was cut a little short), and is made from steel wire 1/4" in diameter. Note the crude, somewhat faint diamond on the shank to the left of the anchor markings.
There are over forty such techniques, each using a different radioactive element or a different way of measuring them.
It has become increasingly clear that these radiometric dating techniques agree with each other and as a whole, present a coherent picture in which the Earth was created a very long time ago.
He is also interested in exploring how close relationships research can inform evolutionary psychological approaches (and vice versa), especially with respect to the way that relationships grow and develop over time (see a brief description of the Re CAST model here).
Best research practices in psychology: Illustrating epistemological and pragmatic considerations with the case of relationship science.
Briefly, a date nail is a nail with the date stamped in its head. I concentrate primarily on the nails used by railroads.
Using other people’s research or ideas without giving them due credit is plagiarism.
Since Bib Me™ makes it easy to create citations, build bibliographies and acknowledge other people’s work, there is no excuse to plagiarize.