In the book: The mineral resources and mineral industry of Oregon for 1903, by Orin Fletch Stafford, Univ of Oregon, Dept of Chemistry, page 54: "Fourteen localities are defined in Harney County as having mineral deposits of sufficient worth to warrant legal locations being made within their limits.All of the locations indicated in what follows were filed subsequent to 1890: --The Idol City District, Township 21, Range 32.Ten quartz claims and eight place claims have been located."
I also found the 2006 document you identified.
The agency most likely (to me) that would have information would have been the Bureau of Land Management, but they seem by the attached (link) they can not legally provide advice on a mine not current.You might call them and ask about it anyway, perhaps they could give you a contact for historic information about the mine: http://www.blm.gov/or/pubroom/files/ORWA-BLM-MINING-PACKET.pdfhttp://www.blm.gov/or/pubroom/files/ORWA-BLM-MINING-PACKET.pdf
The site Inspection document, 579 pages was interesting, identifying open shafts, trenches, etc.Page 7 of the document (Page 2 of 27 in the chapter) gives a full location description.Township 21 South, Range 32 East, Section 4, SW1/4 (the SW Quarter of Section 4) and Section 9, NW 1/4. --Claim locations are in Appendix D.One active claim, the Jumping Jack placer claim.
The History of the Site: Page 10 of the 579: http://www.fs.usda.gov/Internet/FSE_DOCUMENTS/fsbdev3_032967.pdfhttp://www.fs.usda.gov/Internet/FSE_DOCUMENTS/fsbdev3_032967.pdf (This is to the PDF, scroll down to Page 10.An O.J. Darst, was one of the original locators of several claims at the site in 1914, the Trout Creek Mining and Milling Co.The heirs deededthe land to a Mary Riddell Martin, dau of the late C.W. Rddell, her husband H.A. Martin later performed tests and filed claims.Page 78 (Appendix D) shows 14 of the claims.
I also visited the BLM database of Land Patents issued under the Homestead Act for the Township and Range area identified.There were many land patents that could have been filed for the purpose of mining a claim, but listed under the name of the patentee.There was an Oscar Darst that obtained land in that location in 1890.
The above document is probably the best reference for general information.
Other references as provided ... The Harney County Historical MUSEUM...is a MUSEUM.
The Harney County Library.I did a search through their website.They have the typical files and inventory. --They have newspaper microfilms that might have an article about the Mine...BUT, unless you have a specific date of an incident, etc., no one would want to look through them. --They have Individual and Family Histories and Oral History documents, which might be of value IF you can find the names of anyone filing a claim. --They have a photo index which is divided into People and Places.There is no listing under the name of the mine. --The Edward Gray Collection "might" have something about the mine, but I'm betting it is not transferable under the Inter-library loan.I'm sure the library does not do extensive research.But, you "could" ask the Random Acts of Genealogical Kindness Volunteer if she would check those references in this facility.A good many people who identify doing "Public Records" are concerning personal records in the county agency records, sometimes library records in the City/County Directories.I don't know if anyone would do a detailed search for mining records.