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Alexandra, Newport & South Wales Docks Railway

Signal Fact 15

E A Cowper invented the railway detonator in 1841. Used to protect trains that had come to a stand unexpectedly.

First adopted by the Great Western Railway, the other companies soon followed suit.

Detonators are still used today.

This page should be regarded as “Work in Progress”. The webmaster will welcome additional information for this page.

In the list below the information is set out in tabular form, spread over four columns. The column entries are -

RailRef	The Line Code used in RailRef system.
Line Detail	The principal locations included within the Line Code. They are arranged in 'down' direction order. Locations shown are primarily stations and junctions to allow easy cross check against published atlases. Signal box names appear in italics where these are 'intermediate' to stations or have been shown to facilitate links from other pages on this web site. The inclusion of a station or junction name does not imply that there was always a signal box of that same name!
SBR	The section reference used in the relevant Signal Box Register published by the Society.
ELR	The corresponding Engineer's Line Reference(s). This will be blank for railways that never came within British Railways terms of reference. It will also be blank where British Railways had no surviving responsibility for infrastructure at the time the ELR system came into use.

RailRef	Line Detail	ELR
AD001	Caerphilly & Pontypridd Line datum Cardiff East Dock 14m48c P.C.&N. TV001 TV040 14m41c Tram Road Halt 14m00c Glyntaff Halt 13m67c Treforest Halt 13m17c Rhydyfelin Halt (1st) 13m01c Rhydyfelin Halt (2nd) 12m55c Dynea Halt 11m76c Upper Boat Halt 11m22c Groeswen Halt 10m32c Nantgarw Halt High Level 9m37c Walnut Tree Branch Junction RR024 1900 OS Maps show as Pontypridd, Caerphilly & Newport line.	CAP
AD002	Bassaleg Junction B&M - East Mendalgief 2m05c Bassaleg Junction BM030 GW510 Park Siding 0m74c Park Junction Maesglas Bank 0m48c West Mendalgief 0m00c East Mendalgief AD010 AD013 AD014
AD010	Monmouthshire Loop 0m00c Maesglas Junction (1) GW510 Low Level Loop AD011 AD012 Monmouthshire Bank (Monmouthshire Loop) 0m49c East Mendalgief AD001 AD011 1m09c Rolling Bridge AD013 2m05c South Dock end of line (1) Alexandra Dock Junction until 1882 NML: Maesglas Junction - East Mendalgief Junction	NML
AD011	Alexandra Dock Junction GWR - Low Level Loop Junction v Low Level Sidings 0m00c Alexandra Dock Junction 0m34c Low Level Loop South End AD012 0m47c Low Level Loop Junction Monmouthshire Loop Junction AD010	NLL
AD012	Waterloo Loop GWR - Low Level Loop Junction v Eastern Valley Sidings 0m00c Waterloo Loop 0m13c Low Level Loop No.1 0m52c Low Level Loop South End AD011 NWL: Waterloo Loop - Low Level Loop No.1 NLO: Low Level Loop No.1 - Low Level Loop South End	NWL NLO
AD013	East Mendalgief - Rolling Bridge Junction v West Side of North Dock 0m00c East Mendalgief AD001 0m79c Rolling Bridge AD010
AD014	East Mendalgief - No.s 18, 19, & 20 hoists East Mendalgief AD001 Nos.18-20 Hoists

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