Know Your Alloys Multi-cache
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Difficulty:
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Terrain:
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Size: 
(small)
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NOTE: As of Nov. 12, 2010, the final cache hide has been moved to a quite different location, due to the original cache having disappeared. The "math" has been adjusted to reflect this.
Your search begins at a rather forlorn and neglected little bit of local history, one that has been calling out to me for several years as we drove by.
Waypoint 1 (posted coordinates): There are two markers to find – one brass and one bronze. On each is a cluster of digits. Determine the digital roots of both clusters. Call the last digit on the brass marker A, and the digital root of the brass marker B. Call the last digit on the bronze marker C, and the digital root of the bronze marker D.
A _____ B _____ C _____ D _____
E _____ F _____ G _____
Coordinates for Waypoint 2 are:
N44 54. B+D, C, A-C-D
W 076 0C. A-B, D-B, B
Call the first digit in the phone number E. Call the digital root of the phone number F.
Coordinates for Waypoint 3 are:
N44 54. D, F, A-F
W 076 0E. C, D-E, C+F
Identify a year common to two of the alloyes listed. Call the last digit in the year G.
Coordinates for the cache are:
N44 5G. G, F, C
W076 0E. D-G-E, A-B, G
Thanks to lynnewill and 8ender, intrepid beta-testers.
Stealth may be required at times, especially at the final. Please return the cache container to the exact location you found it.
The cache is winter friendly, although, depending on conditions, WP 1 might be a challenge. Or not. In any event, winter-finders should tramp around a bit, to make the search more fun for those who follow.
Additional Hints
(Decrypt)
JC1: Punatr cynarf.
JC2: Ubj vebavp vf gung?
JC3: Pneirq va fgbar.
Pnpur: (Ab uvag arprffnel)