On Apr 3, 2008, at 8:01 PM, Rich Lundin wrote:
> My Apologies to all of the ladies from MSU that I offended!!!!!!!
> The photos are much better and suggest to me a forced draft system.
Are there available online illustrations of same?
What has been described here in VA in what are the oldest commercial
coal mines in the USA (ca. 1700) are a slightly different variant
wherein the hole is about 7x14' with a wooden framework dividing it
into two 7' square segments. One segment is for raising and lowering
of miners and product; and the equipment on top should be so
reflected. The other is for a fire at the bottom to provide the draft
to pull air down onto the coal face and through the mines to prevent
methane problems, of which the Midlothian mines had plenty and due to
accidents, apparently were instrumental in improvements in mine safety.
The absence of soot on the interior surfaces in the SC mines might be
explained by the distance to the surface and the cleaning action of
climate over the intervening years?
Lyle Browning
>
>
> Thanks!
>
> Rich Lundin, WRI (Old Wombat)
> ----- Original Message ----- From: "G. Alcock" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, April 03, 2008 4:51 PM
> Subject: Re: Historic mine structure identifiecation
>
>
>> For those having difficulties viewing Jim's photos:
>>
>> You may need to add/type "es.shtml" on the end of the URL.
>>
>> They are also .pdf documents, which can be cranky sometimes in Web
>> browsers.
>> (Make sure you have at least the free Adobe Reader software.)
>>
>> The direct link to the three photos are (watch the line wrap!)
>> http://www.fs.fed.us/r8/fms/forest/projects/documents/MineStructure1.pdf
>> http://www.fs.fed.us/r8/fms/forest/projects/documents/MineStructure2.pdf
>> http://www.fs.fed.us/r8/fms/forest/projects/documents/MineStructure3.pdf
>>
>> See if pasting those URLs directly into a new window (not a tab) in
>> your browser helps.
>>
>> Gwyn Alcock
>> Riverside, CA
>>
>> ----- Original Message ----
>> From: Jim Bates <[log in to unmask]>
>> To: [log in to unmask]
>> Sent: Thursday, April 3, 2008 1:20:44 PM
>> Subject: Historic mine structure identifiecation
>>
>> I am trying to identify a stone structures next to two mine shafts
>> on a historic
>> mine site on the Sumter National Forest in Oconee County , SC. The
>> site was
>> probably used in the 1850s and contains a couple of deep vertical
>> shafts (15 x
>> 15, and 10 x 10) and several adits, trenches and smaller
>> prospecting holes.
>> They were probably mining argentiferous galena (silver-lead). The
>> stone
>> sturctures are about 15 feet from the shafts, are mud mortared
>> fieldstone, and
>> about six feet square. They are each located upslope of the shafts
>> on steep
>> slopes and do not appear to have associated building foundations.
>> They look
>> like chimneys, but I have not seen soot or any charcoal or slag
>> near the
>> chimneys. Photos are on the attached:
>>
>> http://www.fs.fed.us/r8/fms/forest/projects/OconeeCountyHistoricMineStructur
>> es.shtml
>>
>> Any Ideas? Thanks, Jim Bates
>>
|