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Mileages are given in the form miles.chains. Figures prefixed with ≈ are approximate, those in parentheses are not on this route but are given for reference. Reference to 'start'/'end' of an asset are as read down the page.
AMP Air Ministry Loop
AMP1 Corsham end
96.24 junction with AMP2 (96.40)
96.50 Thingley West Junction with MLN1
Note that it appears that the entire curve could be 0.45 long: AMP1 and AMP2 total 0.71