THE Cornwall Coal Company is considering reopening an open cut mine near St Marys is to ensure continuity of supply to its Tasmania's customers.Company representatives met local residents this week to brief them on activities near the old Jubilee mine site on Gardners Creek Rd and address concerns about noise, truck traffic and water issues if the project proceeds.At its height 50 miners were employed at the Jubilee mine before it was closed in the 1960s. The remains of the open cut loading area are visible.Finding new coal reserves is one of the many challenges facing the Cornwall Coal company as it battles to contunue as a low-cost energy supplier to Tasmanian indusrtry.The company invited The Examiner to tour its processing site at Fingal and underground mine and open cut sites this week.Look for the special report in the Spectrum section of Saturday's Examiner.