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| Posted: Thu May 27th, 2010 10:26 pm |
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| Posted: Thu May 27th, 2010 10:38 pm |
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Herb Kephart
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Duane-
Were the rods loose pieces that rattled around inside a rotating drum, like a ball mill?
If so, what was the advantage over a ball mill?
Herb 
Last edited on Thu May 27th, 2010 10:39 pm by Herb Kephart
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| Posted: Thu May 27th, 2010 10:53 pm |
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3rd Post |
elminero67
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In theory the rod mill was more efficient than a ball mill, which was more efficient than stamp mills...In practice rod mills didnt work as well, at least the models that were used in sw Oregon: One rod mill near Jacksonville Or only last two weeks before the management junked it. Another near Cave Junction could only handle a ton or two a day of ore, even though it was "rated at 25 tons, and this mill never did much. In an interview during the 1950's the owner reported that only a couple thousand dollars of ore was removed.
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| Posted: Fri May 28th, 2010 08:52 pm |
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W C Greene
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Duane-a beautiful model of a seldom modeled (if ever) mill. It just shows that you don't need a large structure set on a steep hillside (gravity stamp mill), to get the job done. Do you still have this model and if so, how about a couple of more pix. This looks like something I would be interested in building.
Woodie
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| Posted: Fri May 28th, 2010 11:48 pm |
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elminero67
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Unfortunately, I don't have any other pics of the model, as it is at school. Architecturally, it is somewhat unusual not only that it looks almost "Prairie School" but also because it is "earthfast" construction. There is no foundation, the posts are simply stuck in the ground and everything attached to the posts. A couple of footnotes on it, when the state geologists did a report on the mine the ore in the ore bins basically had no gold in it, but one of abandoned stopes had fairly rich gold, but the miners were looking in the wrong spot. I don't think the miners were too commited to the mining game as the dump outside the window of the mill is full of 1930's and 40's Pabst and Ranier cans...
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| Posted: Fri Dec 30th, 2016 03:29 pm |
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