The Hendre-Ddu Tramway was a 1 ft 11 in narrow gauge industrial railway built in 1874 in Mid-Wales to connect the Hendre-Ddu slate quarry to Aberangell station on the Mawddwy Railway. It consisted of a main line 3+1⁄2 miles (5.6 km) long and several branch lines and spurs serving other quarries, local farms and the timber industry.

Daniel Nicholas Quine is a computer scientist, currently VP Engineering at AltSchool.