THE CAMPBELL MINE DEPTH DEVELOPMENT PROJECT - PROCUREMENT OF THE REIDSHAFT PRODUCTION AND SERVICE HOISTS

Campbell Mine has produced over eight million ounces of gold since 194 8 The underground mine is accessed by a shaft that was developed in 19 46 and has been deepened an four separate occasions to a depth of 1316 m. Mine development has progressed to the 27th level which is located 4600 ft below surface. In 1995, the Campbell Mine Depth Development P roject was approved by the Placer Dome Inc. Board of Directors. Phase I consists of a new shaft (1820 m below surface), associated surface f acilities service decline from twenty-seven level to thirty level (135 6 m below surface) and secondary stope development. Since that time, t he surface hoist facilities have now been completed, the service decli ne is 90% completed and the Reid shaft has been sunk to a depth of 140 0 m. During the course of this project, it was determined that a used hoist could be purchased, modified and then installed at Campbell Mine . The advantages of this hoist are lower capital expenditures and an i mproved schedule, This paper reviews the dismantling of the hoist in t he United Kingdom, the modifications that were completed, as well as t he installation and commissioning of the hoist at Campbell Mine. The p aper also discusses the problems associated with the utilization of th e production hoist as a sinking hoist and how these issues were resolv ed A review of the service hoist design, procurement, installation and commissioning is also discussed.