Mohave County Mine Records Dept Document
Copy of document obtained from the Mohave County (AZ) Annex, Mining Records Department, Kingman, Arizona, Date unknown. Contains chronological information about the Peacock Mining District including Newspaper articles discussing events and yields from the Hackberry mine.
Letter by William B. Ridenour (original owner of mine) Circa 1900. Letter contains description and history of the Hackberry mine with some data as to yield. (The price for Silver was $1.40/toz and $1.08/toz during the time period discussed)
Report on the Sunshine Mine (Old Hackberry) Mohave County, Arizona by W.L. Watts, April 5, 1912. Report contains geology and mine development information. Also a recap of the information provided by William Ridenour regarding value of “Silver taken out” during the 1874-to-1884 time period. Conclusion: “In my opinion, it is a good gamble to re-open the Sunshine (Old Hackberry Mine) by sinking the proposed shaft.” (1912 Silver Average Price per toz = $.64)
Report on Silver King Group, Peacock Mining District, Hackberry, Mohave Count Arizona, by A.L. Johns, Mining Engineer, May 27, 1918. Discusses geology, mine ore body and samplings at various locations. Conclusion: “I have kept in close touch with developments at the Hackberry Mine during the past year. From comparison of conditions I consider the development of the Silver King Group as a highly promising venture, with reasonable possibilities of developing into a mine of similar magnitude to the Hackberry.” (1912 Silver Average Price per toz = $.64)
Middle Hackberry Mines Company, report by T. J. Sparkes, April 14, 1919. Discusses the status of the Hackberry Mining during this time period, including description of the ore and the effectiveness of the processing. Contains plot of the mining claims. Concluding Remarks: The property has unquestioned exceptionally good merit, based upon what has been proven under previous similar conditions. Situated as it is, it is not unfair to state and assume that the situation of the property in “comparative” as to what did occur when the United Eastern at Oatman and Verdi Extension at Jerome were developed. (1919 Silver Average Price per toz = $1.34)
The Mines Handbook, 1922, Page 288. This report describes the property and equipment at the mine along with discussing the level of contents for Silver, Gold, Lead and Zinc. For full article go to the following web site: http://www.archive.org/stream/minesregistersuc25newyuoft#page/288/mode/2up
A Preliminary Report: Hackberry Silver Mine by Tomo Ito, Consulting Mining Geologist and Metallurgist, August 25, 1969. This report was requested by Nicholas M. Hughes Sr. and made recommendations to improve safety and provided a drilling program with a tentative preliminary budget. (1969 Silver Average Price per toz = $1.81)
Preliminary Report on Hackberry Silver Mine, by L. Dee Kirby, April 7, 1972, Consulting Engineer. Makes recommendation for drilling to pinpoint veins. (1972 Silver Average Price per toz = $1.98)
1972 Wilson Davis Water Assays
Davis Engineering Letter, dated March 17, 1972 relaying water assaying results.
1974 Evaluation by D. B. Robertson
Preliminary Evaluation of the Hackberry Mine Area Mohave County, Arizona for Cyprus Exploration Company by Daniel. B. Robertson, Geologic Consultant, May 1974. Conclusions and Recommendations: “The hackberry prospect in the Peacock Range, Mojave County, Arizona, owned by Mr. Nicholas Hughes, Las Vegas Nevada was examined during March 1974. The exploration targets in the area are vein deposits of silver, lead, zinc and copper ore. Evidence of existing ore bodies is based only on unverified reports, plus production data from the U. S. Bureau of Mines and Mines handbook of 1924. If the data is correct, the ore bodies along the vein could contain about 16oz of silver per ton and several percent of lead and zinc. Geologic mapping and aerial photography evidence indicates that the structures containing mineralization extend for many thousand of feet in a northerly direction. Exploration along the recognized structures by geochemical and V.L.F. geophysical methods is recommended to test the reported ore zones and to test the extensions of the structures.” (1974 Silver Average Price per toz = $4.39)
1979 Report by Theodore A. DeMatties
Exploration Potential of the Hackberry Mine and the Silver King Claim Group, Mojave County, Arizona. ELA Report No. 7921 for The DRAVO Corporation by Theodore A. DeMatties, CPGS Geologist. May 1979. This report provides the Author’s assessment of the effort(s) required to map the mine’s content. (1979 Silver Average Price per toz = $21.79)
Preliminary Report Hackberry Silver Mine, Mohave County, Arizona by John D. Warne, P.E. (Mining) September 10, 1983. In this report Mr. Warne provides an estimate of ore reserves and drawings of the underground developments. At the time of his report he quoted Silver at $12.00 per oz and Gold at $417 per oz. (1983 Average Silver Price per toz = $9.12)
Geology and Ore Potential of the Hackberry, Silver King, Homestake, and Unnamed Lodes, Hackberry District, Mohave, County, Arizona by Mark Malkoski, August 1985. This report is possible the most comprehensive study of the area with an abundance of samples taken and studied. Lists of sample taken and plots of findings are presented. (1985 Average Silver Price per toz = $5.89)
Hackberry Mine Property, Mohave County, Arizona (Report of Property Examination and Recommendation to Acquire) by Jack C. Hamm, March 1987. Mr. Hamm’s report is the results of an investigation contracted by the Combined Metals Reduction Company of Utah. The presentation includes pertinent information extracted from most of the documents listed above, and specifically information regarding ore reserves. If none of the other reports were reviewed this report would provide the reader an excellent summary. (1987 Average Silver Price per toz = $6.79)
1994 Water Assay by Roger Smid
Assays of Surface Tailings Dump by CSAL, Prescott, Arizona April 2011.
2011 Report by Dr. Patrick Hayes
Hackberry Shaft Mining Summary by Dr. Patrick Hayes, PhD for Precision Tech Resources, LLC
2017 NI 43-101 Bitterroot Resources, Ltd
Bitterroot Resources, Ltd NI 43-101 Technical Report prepared by Glen W Adams, P. Geol. and Jeffrey D. Rowe, P. Geo
Excerpts from Books of the Southwest, Chapter X: Mineral Lands, Mines, and Mining - The University of Arizona Library
Hackberry Silver Mine Claims Map
Hackberry Mine Shaft Cross Section
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