080121-08MN006-Sabina Hackett River Project Proposal ... - NIRB

Table of Contents2.4.5.2 Boot Lake Production Plan .......................................................... 2–152.4.5.3 East Cleaver and Main Zone Production Plans ............................ 2–152.4.5.4 Crown Pillar Extraction................................................................ 2–162.4.5.5 Groundwater................................................................................. 2–162.4.5.6 Explosives .................................................................................... 2–162.4.6 Prediction of Project Drainage Chemistry.................................................... 2–172.4.6.1 Phase 1 Samples........................................................................... 2–172.4.6.2 Results of Acid-Base Accounting ................................................ 2–182.4.6.3 Results of Total-Element Analyses .............................................. 2–192.4.6.4 Next Steps to Geochemical Characterization............................... 2–202.5 Process Description....................................................................................................... 2–202.5.1 General ......................................................................................................... 2–202.5.2 Crushing and Grinding ................................................................................. 2–212.5.3 Copper-Lead Flotation.................................................................................. 2–212.5.4 Zinc Flotation ............................................................................................... 2–232.5.5 Concentrate and Tailings Dewatering .......................................................... 2–232.6 Site Infrastructure ......................................................................................................... 2–232.6.1 Plant Facilities .............................................................................................. 2–232.6.1.1 Power Supply ............................................................................... 2–232.6.1.2 Main Substation ........................................................................... 2–242.6.1.3 Underground Mine Power Supply................................................ 2–242.6.1.4 Process Plant and Ancillary Services Power Supply.................... 2–242.6.1.5 Site Power Distribution ................................................................ 2–252.6.1.6 Emergency Standby Power .......................................................... 2–252.6.1.7 Fuel Storage and Distribution ...................................................... 2–262.6.1.8 Electrical and Control Rooms ...................................................... 2–262.6.1.9 Process Control System................................................................ 2–272.6.1.10 Field Instrumentation ................................................................... 2–272.6.1.11 Communications Systems ............................................................ 2–272.6.2 Accommodations.......................................................................................... 2–282.6.3 Airstrip.......................................................................................................... 2–282.6.4 Tank Farms................................................................................................... 2–292.6.5 Explosives..................................................................................................... 2–292.6.6 Hazardous Materials..................................................................................... 2–292.6.7 Equipment..................................................................................................... 2–302.7 Waste and Water Management ..................................................................................... 2–302.7.1 Tailings Management Facility ...................................................................... 2–302.7.1.1 Site Selection................................................................................ 2–302.7.1.2 Tailings and Water Management ................................................. 2–312.7.1.3 Tailings Dams .............................................................................. 2–322.7.1.4 Closure ......................................................................................... 2–332.7.2 Mine Waste Rock ......................................................................................... 2–332.7.3 Wastewater and Sewage ............................................................................... 2–332.7.4 Solid Waste Management............................................................................. 2–342.7.5 Water Use (domestic and process) ............................................................... 2–342.7.6 Diversion and Collection Systems................................................................ 2–342.7.7 Dewatering of Camp Lake............................................................................ 2–352.8 Access ........................................................................................................................... 2–35January 2008 Hackett River Project – Project Proposal Sabina Silver CorporationReport Version B.1 - viii - Rescan Environmental Services Ltd. (Proj. #833-2)