Trees and shrubs cover the landscape with mountains in the background in the Cache Creek Wilderness Area.
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Helen Mercury Mine 

 Photo of Helen Mine Landscape

 


 

Draft final Engineering Evaluation and Cost Analysis (EE/CA), for the Helen Mercury Mine located near Middletown in Lake County (PDF files):

 


J19399-1_Std_Tal_L4_Package_Mini_Final_Report.pdf10178 Kb07/01/2010
J19401-1_Std_Tal_L4_Package_Mini_Final_Report.pdf7424 Kb07/01/2010
J19403-1_Std_Tal_L4_Package_Mini_Final_Report.pdf9064 Kb07/01/2010
Tox_Summaries.pdf93 Kb07/01/2010
Appendix_F_Calulation_Tables.pdf281 Kb07/01/2010
Cost_Estimate_Combined.pdf49 Kb07/01/2010
Helen_EECA_06.17.10_DRAFT_FINAL.pdf2966 Kb07/01/2010
USGS_Investigation.pdf14245 Kb07/01/2010
low_res_Helen_Mine_PHOTO_LAYOUT.pdf8505 Kb07/01/2010
GeoTechLB3.pdf2823 Kb07/01/2010
COVER_SHEET_to_go_on_lab_reports_for_helen.pdf524 Kb07/01/2010