Four Central Electricity Generating Board engineers are suspended high above the River Usk, Wales, during repair work to damaged overhead power cable lines. The repairmen were lowered down to the damaged cables by a British Airways Boeing Chinook. Carrying out the repair work this way, rather than using the conventional trolley, will save an estimated £140,000. Using the trolley system, taking a week to complete the work, would cost about £40,000 a day in 'lost electricity', where as using the helicopter to complete the work in 30 minutes cost just £100,000