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Hay Railway
The Hay Railway (HR) was an early Welsh narrow gauge horse-drawn tramway
that connected Eardisley (10 miles northeast of Hay-on-Wye) with Watton Wharf on the Brecknock and Abergavenny Canal.
==Parliamentary authorisation, construction and opening==
The railway received parliamentary authorisation on 25 May 1811. Construction of its winding 24-mile long route took nearly five years and the line was opened on 7 May 1816. The tramway was built to a gauge of . The railway adopted the use of cast iron 'L'-shaped tramroad plates in its construction. The vertical portions of the two plates were positioned inside the wheels of the tramway wagons and the plates were spiked to stone blocks for stability. The size of the stones, and their spacing, was such that the horses could operate unimpeded.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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