I think what this forum is lacking is a Viz-style 'Top Tips' section, so here's my first go:
Permanent way engineers, to prevent railway lines from being washed away every time it rains, why not lay them on something other than a mixture of sawdust and sand?
Permanent way engineers, to prevent railway lines from being washed away every time it rains, why not lay them on something other than a mixture of sawdust and sand?