... Cost Conversion Bolts Track Continuously Welded Rails Bolted Methods In Situ Welding Research Fatigue Performance Joints Tests Trials Roughness Welds Geometry Stability Fastenings Timber Sleepers Economy Costs Low Low-cost conversionof bolt track to continuously weldedrail...

...D. F. Cannon; R. J. Allen A major source of cost saving in the approach to conversion presented by Mr Cannon was the avoidance of rail cropping. A number of speakers queried this practice, given the difficulties it presented of battered rail ends, quality control of welding, cleaning etc...