True grit


By Barry Fox Autumnal chaos on the railways caused by leaves on the tracks may soon be a thing of the past, according to Rail Product Design of Doncaster. Leaves form a slippery film on rails, making trains skid. The British company proposes tackling the leaves with a sandy mixture that is spread on the track from a light trolley, which is lifted onto the track near the slippery rails (GB 2354500). The trolley carries a bottle of iron filings in a gel, and a sand hopper. This gel and sand mixture breaks down the slippery leaf film,
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