January 21, 2011 11:10AM
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Admin
Registered: 19 years ago
Posts: 7,754
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Allan wrote,
"There are estimates that 500,000 tons (that is
half a million tons) of copper was mined starting
6 or 7000 years ago."
Exactly who made this estimate and how was is made?
given that nobody was keeping written records of
how much people were mining copper in North America
at this, I am very interested in how this figure
was determined.
Best wishes,
Paul H.
"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)
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Author |
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Allan Shumaker |
January 10, 2011 02:20PM |
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donald r raab |
January 10, 2011 04:13PM |
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Allan Shumaker |
January 15, 2011 09:04PM |
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donald r raab |
January 16, 2011 12:43PM |
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Hans |
January 16, 2011 12:08AM |
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Allan Shumaker |
January 16, 2011 10:27AM |
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Roxana Cooper |
January 16, 2011 12:57PM |
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Charlie Hatchett |
January 16, 2011 02:21PM |
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Allan Shumaker |
January 16, 2011 09:16PM |
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Roxana Cooper |
January 17, 2011 12:01PM |
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Charlie Hatchett |
January 17, 2011 08:22PM |
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Roxana Cooper |
January 18, 2011 09:02AM |
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donald r raab |
January 18, 2011 09:56AM |
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Charlie Hatchett |
January 18, 2011 12:18PM |
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Hans |
January 16, 2011 11:24PM |
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Allan Shumaker |
January 16, 2011 01:50PM |
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Charlie Hatchett |
January 16, 2011 02:19PM |
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bernard |
January 16, 2011 02:39PM |
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Frank Hipper |
January 16, 2011 03:09PM |
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Allan Shumaker |
January 16, 2011 04:02PM |
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donald r raab |
January 16, 2011 08:14PM |
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Hermione |
January 17, 2011 06:33AM |
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Roxana Cooper |
January 17, 2011 12:06PM |
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Allan Shumaker |
January 17, 2011 01:08PM |
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sansahansan |
January 18, 2011 08:58AM |
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Pete Clarke |
January 18, 2011 09:10AM |
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Roxana Cooper |
January 19, 2011 09:23AM |
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sansahansan |
January 19, 2011 01:21PM |
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donald r raab |
January 19, 2011 03:23PM |
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Roxana Cooper |
January 19, 2011 07:35PM |
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sansahansan |
January 20, 2011 10:45AM |
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donald r raab |
January 20, 2011 12:24PM |
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sansahansan |
January 24, 2011 08:55AM |
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Roxana Cooper |
January 21, 2011 09:39AM |
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Rick Baudé |
January 21, 2011 11:16PM |
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Allan Shumaker |
January 18, 2011 09:59AM |
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donald r raab |
January 18, 2011 10:03AM |
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Allan Shumaker |
January 18, 2011 10:08AM |
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donald r raab |
January 18, 2011 10:00AM |
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Pete Clarke |
January 18, 2011 10:09AM |
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donald r raab |
January 18, 2011 10:17AM |
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Pete Clarke |
January 18, 2011 10:34AM |
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Roxana Cooper |
January 19, 2011 09:33AM |
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sansahansan |
January 18, 2011 02:45PM |
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donald r raab |
January 18, 2011 04:57PM |
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Pete Clarke |
January 19, 2011 03:38AM |
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Roxana Cooper |
January 19, 2011 09:37AM |
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Roxana Cooper |
January 19, 2011 09:31AM |
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Pete Clarke |
January 19, 2011 09:49AM |
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Roxana Cooper |
January 19, 2011 07:41PM |
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Pete Clarke |
January 20, 2011 03:43AM |
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Roxana Cooper |
January 20, 2011 09:37AM |
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Pete Clarke |
January 20, 2011 09:50AM |
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Roxana Cooper |
January 21, 2011 09:40AM |
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donald r raab |
January 21, 2011 11:04AM |
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Jammer |
January 18, 2011 10:47AM |
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Roxana Cooper |
January 18, 2011 09:04AM |
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Allan Shumaker |
January 18, 2011 10:02AM |
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Roxana Cooper |
January 19, 2011 09:39AM |
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donald r raab |
January 18, 2011 10:20AM |
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Jammer |
January 18, 2011 10:53AM |
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donald r raab |
January 18, 2011 02:59AM |
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Roxana Cooper |
January 18, 2011 09:07AM |
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donald r raab |
January 18, 2011 10:05AM |
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Roxana Cooper |
January 19, 2011 09:40AM |
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donald r raab |
January 21, 2011 08:39PM |
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sansahansan |
January 24, 2011 08:58AM |
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donald r raab |
January 24, 2011 09:24AM |
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sansahansan |
January 24, 2011 12:54PM |
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donald r raab |
January 24, 2011 02:13PM |
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Roxana Cooper |
January 24, 2011 09:46AM |
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Khazar-khum |
January 24, 2011 04:28PM |
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Charlie Hatchett |
January 18, 2011 03:10PM |
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donald r raab |
January 18, 2011 04:52PM |
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Charlie Hatchett |
January 19, 2011 09:50AM |
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donald r raab |
January 19, 2011 09:54AM |
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Charlie Hatchett |
January 19, 2011 09:59AM |
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donald r raab |
January 19, 2011 11:02AM |
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Jammer |
January 19, 2011 12:01PM |
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donald r raab |
January 19, 2011 12:56PM |
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sansahansan |
January 19, 2011 01:33PM |
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Allan Shumaker |
January 19, 2011 02:31PM |
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Charlie Hatchett |
January 19, 2011 04:21PM |
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sansahansan |
January 20, 2011 10:48AM |
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donald r raab |
January 20, 2011 12:26PM |
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donald r raab |
January 19, 2011 05:44PM |
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Charlie Hatchett |
January 19, 2011 05:55PM |
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donald r raab |
January 19, 2011 06:43PM |
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Charlie Hatchett |
January 19, 2011 06:53PM |
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donald r raab |
January 19, 2011 03:34PM |
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sansahansan |
January 20, 2011 10:58AM |
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donald r raab |
January 19, 2011 05:46PM |
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Charlie Hatchett |
January 19, 2011 01:28PM |
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Charlie Hatchett |
January 19, 2011 01:23PM |
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Charlie Hatchett |
January 19, 2011 01:35PM |
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Charlie Hatchett |
January 19, 2011 05:50PM |
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Allan Shumaker |
January 18, 2011 06:27PM |
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Charlie Hatchett |
January 19, 2011 09:55AM |
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donald r raab |
January 20, 2011 12:47PM |
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donald r raab |
January 20, 2011 05:29PM |
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Katherine Reece |
January 20, 2011 07:38PM |
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donald r raab |
January 20, 2011 11:54PM |
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Paul H. |
January 21, 2011 11:10AM |
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Allan Shumaker |
January 21, 2011 12:09PM |
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donald r raab |
January 21, 2011 02:02PM |
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Rick Baudé |
January 21, 2011 03:21PM |
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donald r raab |
January 21, 2011 03:56PM |
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Rick Baudé |
January 21, 2011 05:04PM |
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Roxana Cooper |
January 21, 2011 07:13PM |
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sansahansan |
January 24, 2011 09:05AM |
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donald r raab |
January 24, 2011 09:33AM |
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sansahansan |
January 24, 2011 01:07PM |
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donald r raab |
January 24, 2011 02:20PM |
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sansahansan |
January 24, 2011 02:48PM |
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Paul H. |
January 21, 2011 03:49PM |
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donald r raab |
January 21, 2011 04:09PM |
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Allan Shumaker |
January 21, 2011 04:23PM |
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donald r raab |
January 21, 2011 04:34PM |
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Charlie Hatchett |
January 21, 2011 05:00PM |
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Allan Shumaker |
January 21, 2011 05:55PM |
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Charlie Hatchett |
January 21, 2011 06:58PM |
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Roxana Cooper |
January 21, 2011 07:20PM |
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Charlie Hatchett |
January 21, 2011 08:07PM |
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Rick Baudé |
January 21, 2011 05:12PM |
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Roxana Cooper |
January 21, 2011 07:22PM |
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Allan Shumaker |
January 21, 2011 07:29PM |
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Charlie Hatchett |
January 21, 2011 08:11PM |
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donald r raab |
January 21, 2011 08:36PM |
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Katherine Reece |
January 23, 2011 12:07AM |
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donald r raab |
January 23, 2011 01:40AM |
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Katherine Reece |
January 23, 2011 05:08PM |
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Allan Shumaker |
January 23, 2011 06:36PM |
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Roxana Cooper |
January 23, 2011 10:15AM |
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donald r raab |
January 23, 2011 01:27PM |
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Charlie Hatchett |
January 23, 2011 02:33PM |
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donald r raab |
January 23, 2011 03:04PM |
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Charlie Hatchett |
January 23, 2011 09:17PM |
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Allan Shumaker |
January 24, 2011 12:59PM |
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donald r raab |
January 24, 2011 02:29PM |
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Roxana Cooper |
January 24, 2011 03:48PM |
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sansahansan |
January 24, 2011 03:55PM |
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Roxana Cooper |
January 24, 2011 09:52AM |
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Pete Clarke |
January 24, 2011 10:06AM |
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sansahansan |
January 24, 2011 01:09PM |
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donald r raab |
January 24, 2011 02:23PM |
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donald r raab |
January 24, 2011 10:36AM |
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sansahansan |
January 24, 2011 01:12PM |
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donald r raab |
January 24, 2011 02:27PM |
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sansahansan |
January 24, 2011 03:03PM |
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Khazar-khum |
January 24, 2011 04:35PM |
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Roxana Cooper |
January 24, 2011 07:32PM |
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Hans |
January 25, 2011 11:17PM |
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Roxana Cooper |
January 26, 2011 11:13AM |
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Roxana Cooper |
January 24, 2011 09:49AM |
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donald r raab |
January 21, 2011 04:47PM |
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Allan Shumaker |
January 21, 2011 05:00PM |
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Charlie Hatchett |
January 21, 2011 05:14PM |
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Rick Baudé |
January 21, 2011 05:57PM |
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Charlie Hatchett |
January 21, 2011 07:00PM |
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Rick Baudé |
January 21, 2011 11:11PM |
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Charlie Hatchett |
January 22, 2011 11:09AM |
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Katherine Reece |
January 23, 2011 05:10PM |
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Charlie Hatchett |
January 23, 2011 09:19PM |
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Doug Weller |
January 26, 2011 10:15AM |
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Allan Shumaker |
January 26, 2011 10:34AM |
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Doug Weller |
January 28, 2011 01:18AM |
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Allan Shumaker |
January 22, 2011 12:21AM |
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donald r raab |
January 22, 2011 02:33PM |
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Allan Shumaker |
January 22, 2011 04:33PM |
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donald r raab |
January 22, 2011 04:53PM |
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Allan Shumaker |
January 22, 2011 05:43PM |
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donald r raab |
January 22, 2011 06:54PM |
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donald r raab |
January 22, 2011 05:21PM |
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Allan Shumaker |
January 22, 2011 05:56PM |
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donald r raab |
January 22, 2011 06:34PM |
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Allan Shumaker |
January 22, 2011 07:08PM |
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Roxana Cooper |
January 22, 2011 08:44PM |
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donald r raab |
January 22, 2011 09:21PM |
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Hans |
January 23, 2011 01:40AM |
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Roxana Cooper |
January 23, 2011 10:20AM |
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donald r raab |
January 23, 2011 01:22PM |
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Rebby |
January 23, 2011 01:38PM |
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donald r raab |
January 23, 2011 02:13PM |
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Rebby |
January 23, 2011 02:34PM |
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donald r raab |
January 23, 2011 03:09PM |
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Rebby |
January 23, 2011 03:13PM |
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donald r raab |
January 24, 2011 02:22AM |
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Roxana Cooper |
January 24, 2011 09:58AM |
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donald r raab |
January 24, 2011 02:30AM |
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Roxana Cooper |
January 24, 2011 09:56AM |
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Katherine Reece |
January 23, 2011 05:12PM |
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Khodok |
January 23, 2011 05:40PM |
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donald r raab |
January 23, 2011 11:39PM |
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Sam Salmon |
January 27, 2011 12:19AM |
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Allan Shumaker |
August 06, 2011 09:38AM |
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Hermione |
August 06, 2011 09:48AM |
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Hermione |
August 06, 2011 09:51AM |
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donald r raab |
August 06, 2011 01:01PM |
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Hermione |
August 06, 2011 02:01PM |
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